CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_PCI=y
+CONFIG_PCIEAER=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_DW=y
+CONFIG_PCIE_QCOM=y
+CONFIG_PCI_DOMAINS=y
CONFIG_PCI_MSI=y
CONFIG_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_QCOM_GSBI=y
CONFIG_QCOM_SCM=y
CONFIG_QCOM_WDT=y
+CONFIG_RAS=y
# CONFIG_RCU_BOOST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
CONFIG_RCU_CPU_STALL_VERBOSE=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_PCI=y
-# CONFIG_PCI_DOMAINS_GENERIC is not set
+CONFIG_PCIEAER=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_DW=y
+CONFIG_PCIE_PME=y
+CONFIG_PCIE_QCOM=y
+CONFIG_PCI_DEBUG=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
CONFIG_PCI_MSI=y
CONFIG_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_QCOM_GSBI=y
CONFIG_QCOM_SCM=y
CONFIG_QCOM_WDT=y
+CONFIG_RAS=y
# CONFIG_RCU_BOOST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
CONFIG_RCU_STALL_COMMON=y
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,3/5] DT: PCI: qcom: Document PCIe devicetree bindings
+From: Stanimir Varbanov <svarbanov@mm-sol.com>
+X-Patchwork-Id: 6326181
+Message-Id: <1430743338-10441-4-git-send-email-svarbanov@mm-sol.com>
+To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
+ Mark Rutland <mark.rutland@arm.com>,
+ Grant Likely <grant.likely@linaro.org>,
+ Bjorn Helgaas <bhelgaas@google.com>,
+ Kishon Vijay Abraham I <kishon@ti.com>,
+ Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
+Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
+ linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
+ Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
+ Stanimir Varbanov <svarbanov@mm-sol.com>
+Date: Mon, 4 May 2015 15:42:16 +0300
+
+Document Qualcomm PCIe driver devicetree bindings.
+
+Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
+
+---
+.../devicetree/bindings/pci/qcom,pcie.txt | 231 ++++++++++++++++++++
+ 1 files changed, 231 insertions(+), 0 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
+
+diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+new file mode 100644
+index 0000000..dcf7348
+--- /dev/null
++++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+@@ -0,0 +1,231 @@
++* Qualcomm PCI express root complex
++
++- compatible:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Value shall include
++ - "qcom,pcie-v0" for apq/ipq8064
++ - "qcom,pcie-v1" for apq8084
++
++- reg:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: Register ranges as listed in the reg-names property
++
++- reg-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Must include the following entries
++ - "parf" Qualcomm specific registers
++ - "dbi" Designware PCIe registers
++ - "elbi" External local bus interface registers
++ - "config" PCIe configuration space
++
++- device_type:
++ Usage: required
++ Value type: <string>
++ Definition: Should be "pci". As specified in designware-pcie.txt
++
++- #address-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be set to 3. As specified in designware-pcie.txt
++
++- #size-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be set 2. As specified in designware-pcie.txt
++
++- ranges:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- interrupts:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: MSI interrupt
++
++- interrupt-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain "msi"
++
++- #interrupt-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be 1. As specified in designware-pcie.txt
++
++- interrupt-map-mask:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- interrupt-map:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- clocks:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and clock specifier pairs as listed
++ in clock-names property
++
++- clock-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain the following entries
++ * should be populated for v0 and v1
++ - "iface" Configuration AHB clock
++
++ * should be populated for v0
++ - "core" Clocks the pcie hw block
++ - "phy" Clocks the pcie PHY block
++
++ * should be populated for v1
++ - "aux" Auxiliary (AUX) clock
++ - "bus_master" Master AXI clock
++ - "bus_slave" Slave AXI clock
++
++- resets:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and reset specifier pairs as listed
++ in reset-names property
++
++- reset-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain the following entries
++ * should be populated for v0
++ - "axi" AXI reset
++ - "ahb" AHB reset
++ - "por" POR reset
++ - "pci" PCI reset
++ - "phy" PHY reset
++
++ * should be populated for v1
++ - "core" Core reset
++
++- power-domains:
++ Usage: required (for v1 only)
++ Value type: <prop-encoded-array>
++ Definition: A phandle and power domain specifier pair to the
++ power domain which is responsible for collapsing
++ and restoring power to the peripheral
++
++- <name>-supply:
++ Usage: required
++ Value type: <phandle>
++ Definition: List of phandles to the power supply regulator(s)
++ * should be populated for v0 and v1
++ - "vdda" core analog power supply
++
++ * should be populated for v0
++ - "vdda_phy" analog power supply for PHY
++ - "vdda_refclk" analog power supply for IC which generate
++ reference clock
++
++- phys:
++ Usage: required (for v1 only)
++ Value type: <phandle>
++ Definition: List of phandle(s) as listed in phy-names property
++
++- phy-names:
++ Usage: required (for v1 only)
++ Value type: <stringlist>
++ Definition: Should contain "pciephy"
++
++- <name>-gpio:
++ Usage: optional
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and gpio specifier pairs. Should contain
++ - "perst" PCIe endpoint reset signal line
++ - "pewake" PCIe endpoint wake signal line
++
++- pinctrl-0:
++ Usage: required
++ Value type: <phandle>
++ Definition: List of phandles pointing at a pin(s) configuration
++
++- pinctrl-names
++ Usage: required
++ Value type: <stringlist>
++ Definition: List of names of pinctrl-0 state
++
++* Example for v0
++ pcie0: pci@1b500000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b500000 0x1000
++ 0x1b502000 0x80
++ 0x1b600000 0x100
++ 0x0ff00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* I/O */
++ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* memory */
++ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++ clocks = <&gcc PCIE_A_CLK>,
++ <&gcc PCIE_H_CLK>,
++ <&gcc PCIE_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++ resets = <&gcc PCIE_ACLK_RESET>,
++ <&gcc PCIE_HCLK_RESET>,
++ <&gcc PCIE_POR_RESET>,
++ <&gcc PCIE_PCI_RESET>,
++ <&gcc PCIE_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++ };
++
++* Example for v1
++ pcie0@fc520000 {
++ compatible = "qcom,pcie-v1";
++ reg = <0xfc520000 0x2000>,
++ <0xff000000 0x1000>,
++ <0xff001000 0x1000>,
++ <0xff002000 0x2000>;
++ reg-names = "parf", "dbi", "elbi", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++ ranges = <0x81000000 0 0 0xff200000 0 0x00100000 /* I/O */
++ 0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* memory */
++ interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++ clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
++ <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
++ <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
++ <&gcc GCC_PCIE_0_AUX_CLK>;
++ clock-names = "iface", "master_bus", "slave_bus", "aux";
++ resets = <&gcc GCC_PCIE_0_BCR>;
++ reset-names = "core";
++ power-domains = <&gcc PCIE0_GDSC>;
++ vdda-supply = <&pma8084_l3>;
++ phys = <&pciephy0>;
++ phy-names = "pciephy";
++ perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
++ pinctrl-0 = <&pcie0_pins_default>;
++ pinctrl-names = "default";
++ };
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,4/5] PCI: qcom: Add Qualcomm PCIe controller driver
+From: Stanimir Varbanov <svarbanov@mm-sol.com>
+X-Patchwork-Id: 6326161
+Message-Id: <1430743338-10441-5-git-send-email-svarbanov@mm-sol.com>
+To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
+ Mark Rutland <mark.rutland@arm.com>,
+ Grant Likely <grant.likely@linaro.org>,
+ Bjorn Helgaas <bhelgaas@google.com>,
+ Kishon Vijay Abraham I <kishon@ti.com>,
+ Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
+Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
+ linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
+ Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
+ Stanimir Varbanov <svarbanov@mm-sol.com>
+Date: Mon, 4 May 2015 15:42:17 +0300
+
+The PCIe driver reuse the Designware common code for host
+and MSI initialization, and also program the Qualcomm
+application specific registers.
+
+Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
+
+---
+MAINTAINERS | 7 +
+ drivers/pci/host/Kconfig | 9 +
+ drivers/pci/host/Makefile | 1 +
+ drivers/pci/host/pcie-qcom.c | 677 ++++++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 694 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/pci/host/pcie-qcom.c
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -7127,6 +7127,13 @@ L: linux-pci@vger.kernel.org
+ S: Maintained
+ F: drivers/pci/host/*spear*
+
++PCIE DRIVER FOR QUALCOMM MSM
++M: Stanimir Varbanov <svarbanov@mm-sol.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: drivers/pci/host/*qcom*
++
+ PCMCIA SUBSYSTEM
+ P: Linux PCMCIA Team
+ L: linux-pcmcia@lists.infradead.org
+--- a/drivers/pci/host/Kconfig
++++ b/drivers/pci/host/Kconfig
+@@ -91,4 +91,13 @@ config PCI_XGENE
+ There are 5 internal PCIe ports available. Each port is GEN3 capable
+ and have varied lanes from x1 to x8.
+
++config PCIE_QCOM
++ bool "Qualcomm PCIe controller"
++ depends on ARCH_QCOM && OF || (ARM && COMPILE_TEST)
++ select PCIE_DW
++ select PCIEPORTBUS
++ help
++ Say Y here to enable PCIe controller support on Qualcomm SoCs. The
++ PCIe controller use Designware core plus Qualcomm specific hardware
++ wrappers.
+ endmenu
+--- /dev/null
++++ b/drivers/pci/host/pcie-qcom.c
+@@ -0,0 +1,677 @@
++/*
++ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio.h>
++#include <linux/interrupt.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of_gpio.h>
++#include <linux/pci.h>
++#include <linux/platform_device.h>
++#include <linux/phy/phy.h>
++#include <linux/regulator/consumer.h>
++#include <linux/reset.h>
++#include <linux/slab.h>
++#include <linux/types.h>
++
++#include "pcie-designware.h"
++
++#define PCIE20_PARF_PHY_CTRL 0x40
++#define PCIE20_PARF_PHY_REFCLK 0x4C
++#define PCIE20_PARF_DBI_BASE_ADDR 0x168
++#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16c
++#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
++
++#define PCIE20_ELBI_SYS_CTRL 0x04
++#define PCIE20_ELBI_SYS_STTS 0x08
++#define XMLH_LINK_UP BIT(10)
++
++#define PCIE20_CAP 0x70
++#define PCIE20_CAP_LINKCTRLSTATUS (PCIE20_CAP + 0x10)
++
++#define PERST_DELAY_MIN_US 1000
++#define PERST_DELAY_MAX_US 1005
++
++#define LINKUP_DELAY_MIN_US 5000
++#define LINKUP_DELAY_MAX_US 5100
++#define LINKUP_RETRIES_COUNT 20
++
++#define PCIE_V0 0 /* apq8064 */
++#define PCIE_V1 1 /* apq8084 */
++
++struct qcom_pcie_resources_v0 {
++ struct clk *iface_clk;
++ struct clk *core_clk;
++ struct clk *phy_clk;
++ struct reset_control *pci_reset;
++ struct reset_control *axi_reset;
++ struct reset_control *ahb_reset;
++ struct reset_control *por_reset;
++ struct reset_control *phy_reset;
++ struct regulator *vdda;
++ struct regulator *vdda_phy;
++ struct regulator *vdda_refclk;
++};
++
++struct qcom_pcie_resources_v1 {
++ struct clk *iface;
++ struct clk *aux;
++ struct clk *master_bus;
++ struct clk *slave_bus;
++ struct reset_control *core;
++ struct regulator *vdda;
++};
++
++union pcie_resources {
++ struct qcom_pcie_resources_v0 v0;
++ struct qcom_pcie_resources_v1 v1;
++};
++
++struct qcom_pcie {
++ struct pcie_port pp;
++ struct device *dev;
++ union pcie_resources res;
++ void __iomem *parf;
++ void __iomem *dbi;
++ void __iomem *elbi;
++ struct phy *phy;
++ struct gpio_desc *reset;
++ unsigned int version;
++};
++
++#define to_qcom_pcie(x) container_of(x, struct qcom_pcie, pp)
++
++static inline void
++writel_masked(void __iomem *addr, u32 clear_mask, u32 set_mask)
++{
++ u32 val = readl(addr);
++
++ val &= ~clear_mask;
++ val |= set_mask;
++ writel(val, addr);
++}
++
++static void qcom_ep_reset_assert_deassert(struct qcom_pcie *pcie, int assert)
++{
++ int val, active_low;
++
++ if (IS_ERR_OR_NULL(pcie->reset))
++ return;
++
++ active_low = gpiod_is_active_low(pcie->reset);
++
++ if (assert)
++ val = !!active_low;
++ else
++ val = !active_low;
++
++ gpiod_set_value(pcie->reset, val);
++
++ usleep_range(PERST_DELAY_MIN_US, PERST_DELAY_MAX_US);
++}
++
++static void qcom_ep_reset_assert(struct qcom_pcie *pcie)
++{
++ qcom_ep_reset_assert_deassert(pcie, 1);
++}
++
++static void qcom_ep_reset_deassert(struct qcom_pcie *pcie)
++{
++ qcom_ep_reset_assert_deassert(pcie, 0);
++}
++
++static irqreturn_t qcom_pcie_msi_irq_handler(int irq, void *arg)
++{
++ struct pcie_port *pp = arg;
++
++ return dw_handle_msi_irq(pp);
++}
++
++static int qcom_pcie_link_up(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ u32 val = readl(pcie->dbi + PCIE20_CAP_LINKCTRLSTATUS);
++
++ return val & BIT(29) ? 1 : 0;
++}
++
++static void qcom_pcie_disable_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++
++ reset_control_assert(res->pci_reset);
++ reset_control_assert(res->axi_reset);
++ reset_control_assert(res->ahb_reset);
++ reset_control_assert(res->por_reset);
++ reset_control_assert(res->pci_reset);
++ clk_disable_unprepare(res->iface_clk);
++ clk_disable_unprepare(res->core_clk);
++ clk_disable_unprepare(res->phy_clk);
++ regulator_disable(res->vdda);
++ regulator_disable(res->vdda_phy);
++ regulator_disable(res->vdda_refclk);
++}
++
++static void qcom_pcie_disable_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++
++ reset_control_assert(res->core);
++ clk_disable_unprepare(res->slave_bus);
++ clk_disable_unprepare(res->master_bus);
++ clk_disable_unprepare(res->iface);
++ clk_disable_unprepare(res->aux);
++ regulator_disable(res->vdda);
++}
++
++static int qcom_pcie_enable_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ ret = regulator_enable(res->vdda);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda regulator\n");
++ return ret;
++ }
++
++ ret = regulator_enable(res->vdda_refclk);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda_refclk regulator\n");
++ goto err_refclk;
++ }
++
++ ret = regulator_enable(res->vdda_phy);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda_phy regulator\n");
++ goto err_vdda_phy;
++ }
++
++ ret = clk_prepare_enable(res->iface_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable iface clock\n");
++ goto err_iface;
++ }
++
++ ret = clk_prepare_enable(res->core_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable core clock\n");
++ goto err_clk_core;
++ }
++
++ ret = clk_prepare_enable(res->phy_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable phy clock\n");
++ goto err_clk_phy;
++ }
++
++ ret = reset_control_deassert(res->ahb_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert ahb reset\n");
++ goto err_reset_ahb;
++ }
++
++ return 0;
++
++err_reset_ahb:
++ clk_disable_unprepare(res->phy_clk);
++err_clk_phy:
++ clk_disable_unprepare(res->core_clk);
++err_clk_core:
++ clk_disable_unprepare(res->iface_clk);
++err_iface:
++ regulator_disable(res->vdda_phy);
++err_vdda_phy:
++ regulator_disable(res->vdda_refclk);
++err_refclk:
++ regulator_disable(res->vdda);
++ return ret;
++}
++
++static int qcom_pcie_enable_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ ret = reset_control_deassert(res->core);
++ if (ret) {
++ dev_err(dev, "cannot deassert core reset\n");
++ return ret;
++ }
++
++ ret = clk_prepare_enable(res->aux);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable aux clock\n");
++ goto err_res;
++ }
++
++ ret = clk_prepare_enable(res->iface);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable iface clock\n");
++ goto err_aux;
++ }
++
++ ret = clk_prepare_enable(res->master_bus);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable master_bus clock\n");
++ goto err_iface;
++ }
++
++ ret = clk_prepare_enable(res->slave_bus);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable slave_bus clock\n");
++ goto err_master;
++ }
++
++ ret = regulator_enable(res->vdda);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda regulator\n");
++ goto err_slave;
++ }
++
++ return 0;
++
++err_slave:
++ clk_disable_unprepare(res->slave_bus);
++err_master:
++ clk_disable_unprepare(res->master_bus);
++err_iface:
++ clk_disable_unprepare(res->iface);
++err_aux:
++ clk_disable_unprepare(res->aux);
++err_res:
++ reset_control_assert(res->core);
++
++ return ret;
++}
++
++static int qcom_pcie_get_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++
++ res->vdda = devm_regulator_get(dev, "vdda");
++ if (IS_ERR(res->vdda))
++ return PTR_ERR(res->vdda);
++
++ res->vdda_phy = devm_regulator_get(dev, "vdda_phy");
++ if (IS_ERR(res->vdda_phy))
++ return PTR_ERR(res->vdda_phy);
++
++ res->vdda_refclk = devm_regulator_get(dev, "vdda_refclk");
++ if (IS_ERR(res->vdda_refclk))
++ return PTR_ERR(res->vdda_refclk);
++
++ res->iface_clk = devm_clk_get(dev, "iface");
++ if (IS_ERR(res->iface_clk))
++ return PTR_ERR(res->iface_clk);
++
++ res->core_clk = devm_clk_get(dev, "core");
++ if (IS_ERR(res->core_clk))
++ return PTR_ERR(res->core_clk);
++
++ res->phy_clk = devm_clk_get(dev, "phy");
++ if (IS_ERR(res->phy_clk))
++ return PTR_ERR(res->phy_clk);
++
++ res->pci_reset = devm_reset_control_get(dev, "pci");
++ if (IS_ERR(res->pci_reset))
++ return PTR_ERR(res->pci_reset);
++
++ res->axi_reset = devm_reset_control_get(dev, "axi");
++ if (IS_ERR(res->axi_reset))
++ return PTR_ERR(res->axi_reset);
++
++ res->ahb_reset = devm_reset_control_get(dev, "ahb");
++ if (IS_ERR(res->ahb_reset))
++ return PTR_ERR(res->ahb_reset);
++
++ res->por_reset = devm_reset_control_get(dev, "por");
++ if (IS_ERR(res->por_reset))
++ return PTR_ERR(res->por_reset);
++
++ res->phy_reset = devm_reset_control_get(dev, "phy");
++ if (IS_ERR(res->phy_reset))
++ return PTR_ERR(res->phy_reset);
++
++ return 0;
++}
++
++static int qcom_pcie_get_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++ struct device *dev = pcie->dev;
++
++ res->vdda = devm_regulator_get(dev, "vdda");
++ if (IS_ERR(res->vdda))
++ return PTR_ERR(res->vdda);
++
++ res->iface = devm_clk_get(dev, "iface");
++ if (IS_ERR(res->iface))
++ return PTR_ERR(res->iface);
++
++ res->aux = devm_clk_get(dev, "aux");
++ if (IS_ERR(res->aux) && PTR_ERR(res->aux) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++ else if (IS_ERR(res->aux))
++ res->aux = NULL;
++
++ res->master_bus = devm_clk_get(dev, "master_bus");
++ if (IS_ERR(res->master_bus))
++ return PTR_ERR(res->master_bus);
++
++ res->slave_bus = devm_clk_get(dev, "slave_bus");
++ if (IS_ERR(res->slave_bus))
++ return PTR_ERR(res->slave_bus);
++
++ res->core = devm_reset_control_get(dev, "core");
++ if (IS_ERR(res->core))
++ return PTR_ERR(res->core);
++
++ return 0;
++}
++
++static int qcom_pcie_enable_link_training(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ struct device *dev = pp->dev;
++ int retries;
++ u32 val;
++
++ /* enable link training */
++ writel_masked(pcie->elbi + PCIE20_ELBI_SYS_CTRL, 0, BIT(0));
++
++ /* wait for up to 100ms for the link to come up */
++ retries = LINKUP_RETRIES_COUNT;
++ do {
++ val = readl(pcie->elbi + PCIE20_ELBI_SYS_STTS);
++ if (val & XMLH_LINK_UP)
++ break;
++ usleep_range(LINKUP_DELAY_MIN_US, LINKUP_DELAY_MAX_US);
++ } while (retries--);
++
++ if (retries < 0 || !dw_pcie_link_up(pp)) {
++ dev_err(dev, "link initialization failed\n");
++ return -ENXIO;
++ }
++
++ return 0;
++}
++
++static void qcom_pcie_host_init_v1(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ int ret;
++
++ qcom_ep_reset_assert(pcie);
++
++ ret = qcom_pcie_enable_resources_v1(pcie);
++ if (ret)
++ return;
++
++ /* change DBI base address */
++ writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ writel_masked(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT,
++ 0, BIT(31));
++
++ ret = phy_init(pcie->phy);
++ if (ret)
++ goto err_res;
++
++ ret = phy_power_on(pcie->phy);
++ if (ret)
++ goto err_phy;
++
++ dw_pcie_setup_rc(pp);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ dw_pcie_msi_init(pp);
++
++ qcom_ep_reset_deassert(pcie);
++
++ ret = qcom_pcie_enable_link_training(pp);
++ if (ret)
++ goto err;
++
++ return;
++
++err:
++ qcom_ep_reset_assert(pcie);
++ phy_power_off(pcie->phy);
++err_phy:
++ phy_exit(pcie->phy);
++err_res:
++ qcom_pcie_disable_resources_v1(pcie);
++}
++
++static void qcom_pcie_host_init_v0(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ qcom_ep_reset_assert(pcie);
++
++ ret = qcom_pcie_enable_resources_v0(pcie);
++ if (ret)
++ return;
++
++ writel_masked(pcie->parf + PCIE20_PARF_PHY_CTRL, BIT(0), 0);
++
++ /* enable external reference clock */
++ writel_masked(pcie->parf + PCIE20_PARF_PHY_REFCLK, 0, BIT(16));
++
++ ret = reset_control_deassert(res->phy_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert phy reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->pci_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert pci reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->por_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert por reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->axi_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert axi reset\n");
++ return;
++ }
++
++ /* wait 150ms for clock acquisition */
++ usleep_range(10000, 15000);
++
++ dw_pcie_setup_rc(pp);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ dw_pcie_msi_init(pp);
++
++ qcom_ep_reset_deassert(pcie);
++
++ ret = qcom_pcie_enable_link_training(pp);
++ if (ret)
++ goto err;
++
++ return;
++err:
++ qcom_ep_reset_assert(pcie);
++ qcom_pcie_disable_resources_v0(pcie);
++}
++
++static void qcom_pcie_host_init(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++
++ if (pcie->version == PCIE_V0)
++ return qcom_pcie_host_init_v0(pp);
++ else
++ return qcom_pcie_host_init_v1(pp);
++}
++
++static int
++qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size, u32 *val)
++{
++ /* the device class is not reported correctly from the register */
++ if (where == PCI_CLASS_REVISION && size == 4) {
++ *val = readl(pp->dbi_base + PCI_CLASS_REVISION);
++ *val &= ~(0xffff << 16);
++ *val |= PCI_CLASS_BRIDGE_PCI << 16;
++ return PCIBIOS_SUCCESSFUL;
++ }
++
++ return dw_pcie_cfg_read(pp->dbi_base + (where & ~0x3), where,
++ size, val);
++}
++
++static struct pcie_host_ops qcom_pcie_ops = {
++ .link_up = qcom_pcie_link_up,
++ .host_init = qcom_pcie_host_init,
++ .rd_own_conf = qcom_pcie_rd_own_conf,
++};
++
++static const struct of_device_id qcom_pcie_match[] = {
++ { .compatible = "qcom,pcie-v0", .data = (void *)PCIE_V0 },
++ { .compatible = "qcom,pcie-v1", .data = (void *)PCIE_V1 },
++ { }
++};
++
++static int qcom_pcie_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ const struct of_device_id *match;
++ struct resource *res;
++ struct qcom_pcie *pcie;
++ struct pcie_port *pp;
++ int ret;
++
++ match = of_match_node(qcom_pcie_match, dev->of_node);
++ if (!match)
++ return -ENXIO;
++
++ pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
++ if (!pcie)
++ return -ENOMEM;
++
++ pcie->version = (unsigned int)match->data;
++
++ pcie->reset = devm_gpiod_get_optional(dev, "perst");
++ if (IS_ERR(pcie->reset) && PTR_ERR(pcie->reset) == -EPROBE_DEFER)
++ return PTR_ERR(pcie->reset);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf");
++ pcie->parf = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->parf))
++ return PTR_ERR(pcie->parf);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
++ pcie->dbi = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->dbi))
++ return PTR_ERR(pcie->dbi);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "elbi");
++ pcie->elbi = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->elbi))
++ return PTR_ERR(pcie->elbi);
++
++ pcie->phy = devm_phy_optional_get(dev, "pciephy");
++ if (IS_ERR(pcie->phy))
++ return PTR_ERR(pcie->phy);
++
++ pcie->dev = dev;
++
++ if (pcie->version == PCIE_V0)
++ ret = qcom_pcie_get_resources_v0(pcie);
++ else
++ ret = qcom_pcie_get_resources_v1(pcie);
++
++ if (ret)
++ return ret;
++
++ pp = &pcie->pp;
++ pp->dev = dev;
++ pp->dbi_base = pcie->dbi;
++ pp->root_bus_nr = -1;
++ pp->ops = &qcom_pcie_ops;
++
++ if (IS_ENABLED(CONFIG_PCI_MSI)) {
++ pp->msi_irq = platform_get_irq_byname(pdev, "msi");
++ if (pp->msi_irq < 0) {
++ dev_err(dev, "cannot get msi irq\n");
++ return pp->msi_irq;
++ }
++
++ ret = devm_request_irq(dev, pp->msi_irq,
++ qcom_pcie_msi_irq_handler,
++ IRQF_SHARED, "qcom-pcie-msi", pp);
++ if (ret) {
++ dev_err(dev, "cannot request msi irq\n");
++ return ret;
++ }
++ }
++
++ ret = dw_pcie_host_init(pp);
++ if (ret) {
++ dev_err(dev, "cannot initialize host\n");
++ return ret;
++ }
++
++ platform_set_drvdata(pdev, pcie);
++
++ return 0;
++}
++
++static int qcom_pcie_remove(struct platform_device *pdev)
++{
++ struct qcom_pcie *pcie = platform_get_drvdata(pdev);
++
++ qcom_ep_reset_assert(pcie);
++ phy_power_off(pcie->phy);
++ phy_exit(pcie->phy);
++ if (pcie->version == PCIE_V0)
++ qcom_pcie_disable_resources_v0(pcie);
++ else
++ qcom_pcie_disable_resources_v1(pcie);
++
++ return 0;
++}
++
++static struct platform_driver qcom_pcie_driver = {
++ .probe = qcom_pcie_probe,
++ .remove = qcom_pcie_remove,
++ .driver = {
++ .name = "qcom-pcie",
++ .of_match_table = qcom_pcie_match,
++ },
++};
++
++module_platform_driver(qcom_pcie_driver);
++
++MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
++MODULE_DESCRIPTION("Qualcomm PCIe root complex driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:qcom-pcie");
+--- a/drivers/pci/host/Makefile
++++ b/drivers/pci/host/Makefile
+@@ -11,3 +11,4 @@ obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spe
+ obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o
+ obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o
+ obj-$(CONFIG_PCI_XGENE) += pci-xgene.o
++obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o
--- /dev/null
+From 5b40516b2f5fb9b2a7d6d3e2e924f12ec9d183a8 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Tue, 21 Apr 2015 19:01:42 -0700
+Subject: [PATCH 8/9] ARM: dts: qcom: add pcie nodes to ipq806x platforms
+
+qcom-pcie driver now supports version 0 of the controller. This change
+adds the corresponding entries to the IPQ806x dtsi file and
+corresponding platform (AP148).
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 30 ++++++++
+ arch/arm/boot/dts/qcom-ipq8064.dtsi | 124 +++++++++++++++++++++++++++++++
+ 2 files changed, 154 insertions(+)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -30,6 +30,22 @@
+ bias-disable;
+ };
+
++ pcie1_pins: pcie1_pinmux {
++ mux {
++ pins = "gpio3";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
++ pcie2_pins: pcie2_pinmux {
++ mux {
++ pins = "gpio48";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
+ spi_pins: spi_pins {
+ mux {
+ pins = "gpio18", "gpio19", "gpio21";
+@@ -136,5 +152,19 @@
+ usb30@1 {
+ status = "ok";
+ };
++
++ pcie0: pci@1b500000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 3 0>;
++ pinctrl-0 = <&pcie1_pins>;
++ pinctrl-names = "default";
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 48 0>;
++ pinctrl-0 = <&pcie2_pins>;
++ pinctrl-names = "default";
++ };
+ };
+ };
+--- a/arch/arm/boot/dts/qcom-ipq8064-db149.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
+@@ -37,6 +37,30 @@
+ bias-disable;
+ };
+
++ pcie1_pins: pcie1_pinmux {
++ mux {
++ pins = "gpio3";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
++ pcie2_pins: pcie2_pinmux {
++ mux {
++ pins = "gpio48";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
++ pcie3_pins: pcie3_pinmux {
++ mux {
++ pins = "gpio63";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
+ spi_pins: spi_pins {
+ mux {
+ pins = "gpio18", "gpio19", "gpio21";
+@@ -153,6 +177,27 @@
+ status = "ok";
+ };
+
++ pcie0: pci@1b500000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 3 0>;
++ pinctrl-0 = <&pcie1_pins>;
++ pinctrl-names = "default";
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 48 0>;
++ pinctrl-0 = <&pcie2_pins>;
++ pinctrl-names = "default";
++ };
++
++ pcie2: pci@1b900000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 63 0>;
++ pinctrl-0 = <&pcie3_pins>;
++ pinctrl-names = "default";
++ };
++
+ mdio0: mdio {
+ compatible = "virtual,mdio-gpio";
+ #address-cells = <1>;
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -3,6 +3,7 @@
+ #include "skeleton.dtsi"
+ #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
+ #include <dt-bindings/soc/qcom,gsbi.h>
++#include <dt-bindings/reset/qcom,gcc-ipq806x.h>
+
+ / {
+ model = "Qualcomm IPQ8064";
+@@ -306,6 +307,129 @@
+ #reset-cells = <1>;
+ };
+
++ pcie0: pci@1b500000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b500000 0x1000
++ 0x1b502000 0x80
++ 0x1b600000 0x100
++ 0x0ff00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_A_CLK>,
++ <&gcc PCIE_H_CLK>,
++ <&gcc PCIE_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_ACLK_RESET>,
++ <&gcc PCIE_HCLK_RESET>,
++ <&gcc PCIE_POR_RESET>,
++ <&gcc PCIE_PCI_RESET>,
++ <&gcc PCIE_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ status = "disabled";
++ };
++
++ pcie1: pci@1b700000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b700000 0x1000
++ 0x1b702000 0x80
++ 0x1b800000 0x100
++ 0x31f00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <1>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0 0x31e00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x00000000 0x2e000000 0 0x03e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 57 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 58 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 59 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 60 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 61 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_1_A_CLK>,
++ <&gcc PCIE_1_H_CLK>,
++ <&gcc PCIE_1_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_1_ACLK_RESET>,
++ <&gcc PCIE_1_HCLK_RESET>,
++ <&gcc PCIE_1_POR_RESET>,
++ <&gcc PCIE_1_PCI_RESET>,
++ <&gcc PCIE_1_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ status = "disabled";
++ };
++
++ pcie2: pci@1b900000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b900000 0x1000
++ 0x1b902000 0x80
++ 0x1ba00000 0x100
++ 0x35f00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <2>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0 0x35e00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x00000000 0x32000000 0 0x03e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 71 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 72 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 73 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 74 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 75 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_2_A_CLK>,
++ <&gcc PCIE_2_H_CLK>,
++ <&gcc PCIE_2_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_2_ACLK_RESET>,
++ <&gcc PCIE_2_HCLK_RESET>,
++ <&gcc PCIE_2_POR_RESET>,
++ <&gcc PCIE_2_PCI_RESET>,
++ <&gcc PCIE_2_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ status = "disabled";
++ };
++
+ hs_phy_1: phy@100f8800 {
+ compatible = "qcom,dwc3-hs-usb-phy";
+ reg = <0x100f8800 0x30>;
+@@ -389,6 +513,5 @@
+ dr_mode = "host";
+ };
+ };
+-
+ };
+ };
--- /dev/null
+From f004aa1dec6e2e206be025de15b115d60f2b21e3 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Tue, 21 Apr 2015 19:09:07 -0700
+Subject: [PATCH 9/9] ARM: qcom: automatically select PCI_DOMAINS if PCI is
+ enabled
+
+If multiple PCIe devices are present in the system, the kernel will
+panic at boot time when trying to scan the PCI buses. This happens on
+IPQ806x based platforms, which has 3 PCIe ports.
+
+Enabling this option allows the kernel to assign the pci-domains
+according to the device-tree content. This allows multiple PCIe
+controllers to coexist in the system.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/mach-qcom/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/mach-qcom/Kconfig
++++ b/arch/arm/mach-qcom/Kconfig
+@@ -6,6 +6,7 @@ menuconfig ARCH_QCOM
+ select CLKSRC_OF
+ select PINCTRL
+ select QCOM_SCM if SMP
++ select PCI_DOMAINS if PCI
+ help
+ Support for Qualcomm's devicetree based systems.
+
i2c4_pins: i2c4_pinmux {
pins = "gpio12", "gpio13";
function = "gsbi4";
-@@ -38,6 +45,25 @@
+@@ -54,6 +61,25 @@
bias-none;
};
};
};
gsbi@16300000 {
-@@ -76,6 +102,7 @@
+@@ -92,6 +118,7 @@
#size-cells = <1>;
spi-max-frequency = <50000000>;
reg = <0>;
partition@0 {
label = "lowlevel_init";
-@@ -136,5 +163,66 @@
- usb30@1 {
- status = "ok";
+@@ -166,5 +193,66 @@
+ pinctrl-0 = <&pcie2_pins>;
+ pinctrl-names = "default";
};
+
+ mdio0: mdio {
};
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
-@@ -3,6 +3,7 @@
- #include "skeleton.dtsi"
+@@ -4,6 +4,7 @@
#include <dt-bindings/clock/qcom,gcc-ipq806x.h>
#include <dt-bindings/soc/qcom,gsbi.h>
+ #include <dt-bindings/reset/qcom,gcc-ipq806x.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
/ {
model = "Qualcomm IPQ8064";
-@@ -390,5 +391,41 @@
+@@ -513,5 +514,42 @@
+ dr_mode = "host";
};
};
-
++
+ nss-gmac-common {
+ reg = <0x03000000 0x0000FFFF 0x1bb00000 0x0000FFFF 0x00900000 0x00004000>;
+ reg-names = "nss_reg_base" , "qsgmii_reg_base", "clk_ctl_base";
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,3/5] DT: PCI: qcom: Document PCIe devicetree bindings
+From: Stanimir Varbanov <svarbanov@mm-sol.com>
+X-Patchwork-Id: 6326181
+Message-Id: <1430743338-10441-4-git-send-email-svarbanov@mm-sol.com>
+To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
+ Mark Rutland <mark.rutland@arm.com>,
+ Grant Likely <grant.likely@linaro.org>,
+ Bjorn Helgaas <bhelgaas@google.com>,
+ Kishon Vijay Abraham I <kishon@ti.com>,
+ Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
+Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
+ linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
+ Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
+ Stanimir Varbanov <svarbanov@mm-sol.com>
+Date: Mon, 4 May 2015 15:42:16 +0300
+
+Document Qualcomm PCIe driver devicetree bindings.
+
+Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
+
+---
+.../devicetree/bindings/pci/qcom,pcie.txt | 231 ++++++++++++++++++++
+ 1 files changed, 231 insertions(+), 0 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
+
+diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+new file mode 100644
+index 0000000..dcf7348
+--- /dev/null
++++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+@@ -0,0 +1,231 @@
++* Qualcomm PCI express root complex
++
++- compatible:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Value shall include
++ - "qcom,pcie-v0" for apq/ipq8064
++ - "qcom,pcie-v1" for apq8084
++
++- reg:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: Register ranges as listed in the reg-names property
++
++- reg-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Must include the following entries
++ - "parf" Qualcomm specific registers
++ - "dbi" Designware PCIe registers
++ - "elbi" External local bus interface registers
++ - "config" PCIe configuration space
++
++- device_type:
++ Usage: required
++ Value type: <string>
++ Definition: Should be "pci". As specified in designware-pcie.txt
++
++- #address-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be set to 3. As specified in designware-pcie.txt
++
++- #size-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be set 2. As specified in designware-pcie.txt
++
++- ranges:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- interrupts:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: MSI interrupt
++
++- interrupt-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain "msi"
++
++- #interrupt-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be 1. As specified in designware-pcie.txt
++
++- interrupt-map-mask:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- interrupt-map:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- clocks:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and clock specifier pairs as listed
++ in clock-names property
++
++- clock-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain the following entries
++ * should be populated for v0 and v1
++ - "iface" Configuration AHB clock
++
++ * should be populated for v0
++ - "core" Clocks the pcie hw block
++ - "phy" Clocks the pcie PHY block
++
++ * should be populated for v1
++ - "aux" Auxiliary (AUX) clock
++ - "bus_master" Master AXI clock
++ - "bus_slave" Slave AXI clock
++
++- resets:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and reset specifier pairs as listed
++ in reset-names property
++
++- reset-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain the following entries
++ * should be populated for v0
++ - "axi" AXI reset
++ - "ahb" AHB reset
++ - "por" POR reset
++ - "pci" PCI reset
++ - "phy" PHY reset
++
++ * should be populated for v1
++ - "core" Core reset
++
++- power-domains:
++ Usage: required (for v1 only)
++ Value type: <prop-encoded-array>
++ Definition: A phandle and power domain specifier pair to the
++ power domain which is responsible for collapsing
++ and restoring power to the peripheral
++
++- <name>-supply:
++ Usage: required
++ Value type: <phandle>
++ Definition: List of phandles to the power supply regulator(s)
++ * should be populated for v0 and v1
++ - "vdda" core analog power supply
++
++ * should be populated for v0
++ - "vdda_phy" analog power supply for PHY
++ - "vdda_refclk" analog power supply for IC which generate
++ reference clock
++
++- phys:
++ Usage: required (for v1 only)
++ Value type: <phandle>
++ Definition: List of phandle(s) as listed in phy-names property
++
++- phy-names:
++ Usage: required (for v1 only)
++ Value type: <stringlist>
++ Definition: Should contain "pciephy"
++
++- <name>-gpio:
++ Usage: optional
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and gpio specifier pairs. Should contain
++ - "perst" PCIe endpoint reset signal line
++ - "pewake" PCIe endpoint wake signal line
++
++- pinctrl-0:
++ Usage: required
++ Value type: <phandle>
++ Definition: List of phandles pointing at a pin(s) configuration
++
++- pinctrl-names
++ Usage: required
++ Value type: <stringlist>
++ Definition: List of names of pinctrl-0 state
++
++* Example for v0
++ pcie0: pci@1b500000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b500000 0x1000
++ 0x1b502000 0x80
++ 0x1b600000 0x100
++ 0x0ff00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* I/O */
++ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* memory */
++ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++ clocks = <&gcc PCIE_A_CLK>,
++ <&gcc PCIE_H_CLK>,
++ <&gcc PCIE_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++ resets = <&gcc PCIE_ACLK_RESET>,
++ <&gcc PCIE_HCLK_RESET>,
++ <&gcc PCIE_POR_RESET>,
++ <&gcc PCIE_PCI_RESET>,
++ <&gcc PCIE_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++ };
++
++* Example for v1
++ pcie0@fc520000 {
++ compatible = "qcom,pcie-v1";
++ reg = <0xfc520000 0x2000>,
++ <0xff000000 0x1000>,
++ <0xff001000 0x1000>,
++ <0xff002000 0x2000>;
++ reg-names = "parf", "dbi", "elbi", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++ ranges = <0x81000000 0 0 0xff200000 0 0x00100000 /* I/O */
++ 0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* memory */
++ interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++ clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
++ <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
++ <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
++ <&gcc GCC_PCIE_0_AUX_CLK>;
++ clock-names = "iface", "master_bus", "slave_bus", "aux";
++ resets = <&gcc GCC_PCIE_0_BCR>;
++ reset-names = "core";
++ power-domains = <&gcc PCIE0_GDSC>;
++ vdda-supply = <&pma8084_l3>;
++ phys = <&pciephy0>;
++ phy-names = "pciephy";
++ perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
++ pinctrl-0 = <&pcie0_pins_default>;
++ pinctrl-names = "default";
++ };
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,4/5] PCI: qcom: Add Qualcomm PCIe controller driver
+From: Stanimir Varbanov <svarbanov@mm-sol.com>
+X-Patchwork-Id: 6326161
+Message-Id: <1430743338-10441-5-git-send-email-svarbanov@mm-sol.com>
+To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
+ Mark Rutland <mark.rutland@arm.com>,
+ Grant Likely <grant.likely@linaro.org>,
+ Bjorn Helgaas <bhelgaas@google.com>,
+ Kishon Vijay Abraham I <kishon@ti.com>,
+ Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
+Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
+ linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
+ Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
+ Stanimir Varbanov <svarbanov@mm-sol.com>
+Date: Mon, 4 May 2015 15:42:17 +0300
+
+The PCIe driver reuse the Designware common code for host
+and MSI initialization, and also program the Qualcomm
+application specific registers.
+
+Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
+
+---
+MAINTAINERS | 7 +
+ drivers/pci/host/Kconfig | 9 +
+ drivers/pci/host/Makefile | 1 +
+ drivers/pci/host/pcie-qcom.c | 677 ++++++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 694 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/pci/host/pcie-qcom.c
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -7511,6 +7511,13 @@ L: linux-pci@vger.kernel.org
+ S: Maintained
+ F: drivers/pci/host/*spear*
+
++PCIE DRIVER FOR QUALCOMM MSM
++M: Stanimir Varbanov <svarbanov@mm-sol.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: drivers/pci/host/*qcom*
++
+ PCMCIA SUBSYSTEM
+ P: Linux PCMCIA Team
+ L: linux-pcmcia@lists.infradead.org
+--- a/drivers/pci/host/Kconfig
++++ b/drivers/pci/host/Kconfig
+@@ -106,4 +106,13 @@ config PCI_VERSATILE
+ bool "ARM Versatile PB PCI controller"
+ depends on ARCH_VERSATILE
+
++config PCIE_QCOM
++ bool "Qualcomm PCIe controller"
++ depends on ARCH_QCOM && OF || (ARM && COMPILE_TEST)
++ select PCIE_DW
++ select PCIEPORTBUS
++ help
++ Say Y here to enable PCIe controller support on Qualcomm SoCs. The
++ PCIe controller use Designware core plus Qualcomm specific hardware
++ wrappers.
+ endmenu
+--- /dev/null
++++ b/drivers/pci/host/pcie-qcom.c
+@@ -0,0 +1,677 @@
++/*
++ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio.h>
++#include <linux/interrupt.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of_gpio.h>
++#include <linux/pci.h>
++#include <linux/platform_device.h>
++#include <linux/phy/phy.h>
++#include <linux/regulator/consumer.h>
++#include <linux/reset.h>
++#include <linux/slab.h>
++#include <linux/types.h>
++
++#include "pcie-designware.h"
++
++#define PCIE20_PARF_PHY_CTRL 0x40
++#define PCIE20_PARF_PHY_REFCLK 0x4C
++#define PCIE20_PARF_DBI_BASE_ADDR 0x168
++#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16c
++#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
++
++#define PCIE20_ELBI_SYS_CTRL 0x04
++#define PCIE20_ELBI_SYS_STTS 0x08
++#define XMLH_LINK_UP BIT(10)
++
++#define PCIE20_CAP 0x70
++#define PCIE20_CAP_LINKCTRLSTATUS (PCIE20_CAP + 0x10)
++
++#define PERST_DELAY_MIN_US 1000
++#define PERST_DELAY_MAX_US 1005
++
++#define LINKUP_DELAY_MIN_US 5000
++#define LINKUP_DELAY_MAX_US 5100
++#define LINKUP_RETRIES_COUNT 20
++
++#define PCIE_V0 0 /* apq8064 */
++#define PCIE_V1 1 /* apq8084 */
++
++struct qcom_pcie_resources_v0 {
++ struct clk *iface_clk;
++ struct clk *core_clk;
++ struct clk *phy_clk;
++ struct reset_control *pci_reset;
++ struct reset_control *axi_reset;
++ struct reset_control *ahb_reset;
++ struct reset_control *por_reset;
++ struct reset_control *phy_reset;
++ struct regulator *vdda;
++ struct regulator *vdda_phy;
++ struct regulator *vdda_refclk;
++};
++
++struct qcom_pcie_resources_v1 {
++ struct clk *iface;
++ struct clk *aux;
++ struct clk *master_bus;
++ struct clk *slave_bus;
++ struct reset_control *core;
++ struct regulator *vdda;
++};
++
++union pcie_resources {
++ struct qcom_pcie_resources_v0 v0;
++ struct qcom_pcie_resources_v1 v1;
++};
++
++struct qcom_pcie {
++ struct pcie_port pp;
++ struct device *dev;
++ union pcie_resources res;
++ void __iomem *parf;
++ void __iomem *dbi;
++ void __iomem *elbi;
++ struct phy *phy;
++ struct gpio_desc *reset;
++ unsigned int version;
++};
++
++#define to_qcom_pcie(x) container_of(x, struct qcom_pcie, pp)
++
++static inline void
++writel_masked(void __iomem *addr, u32 clear_mask, u32 set_mask)
++{
++ u32 val = readl(addr);
++
++ val &= ~clear_mask;
++ val |= set_mask;
++ writel(val, addr);
++}
++
++static void qcom_ep_reset_assert_deassert(struct qcom_pcie *pcie, int assert)
++{
++ int val, active_low;
++
++ if (IS_ERR_OR_NULL(pcie->reset))
++ return;
++
++ active_low = gpiod_is_active_low(pcie->reset);
++
++ if (assert)
++ val = !!active_low;
++ else
++ val = !active_low;
++
++ gpiod_set_value(pcie->reset, val);
++
++ usleep_range(PERST_DELAY_MIN_US, PERST_DELAY_MAX_US);
++}
++
++static void qcom_ep_reset_assert(struct qcom_pcie *pcie)
++{
++ qcom_ep_reset_assert_deassert(pcie, 1);
++}
++
++static void qcom_ep_reset_deassert(struct qcom_pcie *pcie)
++{
++ qcom_ep_reset_assert_deassert(pcie, 0);
++}
++
++static irqreturn_t qcom_pcie_msi_irq_handler(int irq, void *arg)
++{
++ struct pcie_port *pp = arg;
++
++ return dw_handle_msi_irq(pp);
++}
++
++static int qcom_pcie_link_up(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ u32 val = readl(pcie->dbi + PCIE20_CAP_LINKCTRLSTATUS);
++
++ return val & BIT(29) ? 1 : 0;
++}
++
++static void qcom_pcie_disable_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++
++ reset_control_assert(res->pci_reset);
++ reset_control_assert(res->axi_reset);
++ reset_control_assert(res->ahb_reset);
++ reset_control_assert(res->por_reset);
++ reset_control_assert(res->pci_reset);
++ clk_disable_unprepare(res->iface_clk);
++ clk_disable_unprepare(res->core_clk);
++ clk_disable_unprepare(res->phy_clk);
++ regulator_disable(res->vdda);
++ regulator_disable(res->vdda_phy);
++ regulator_disable(res->vdda_refclk);
++}
++
++static void qcom_pcie_disable_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++
++ reset_control_assert(res->core);
++ clk_disable_unprepare(res->slave_bus);
++ clk_disable_unprepare(res->master_bus);
++ clk_disable_unprepare(res->iface);
++ clk_disable_unprepare(res->aux);
++ regulator_disable(res->vdda);
++}
++
++static int qcom_pcie_enable_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ ret = regulator_enable(res->vdda);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda regulator\n");
++ return ret;
++ }
++
++ ret = regulator_enable(res->vdda_refclk);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda_refclk regulator\n");
++ goto err_refclk;
++ }
++
++ ret = regulator_enable(res->vdda_phy);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda_phy regulator\n");
++ goto err_vdda_phy;
++ }
++
++ ret = clk_prepare_enable(res->iface_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable iface clock\n");
++ goto err_iface;
++ }
++
++ ret = clk_prepare_enable(res->core_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable core clock\n");
++ goto err_clk_core;
++ }
++
++ ret = clk_prepare_enable(res->phy_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable phy clock\n");
++ goto err_clk_phy;
++ }
++
++ ret = reset_control_deassert(res->ahb_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert ahb reset\n");
++ goto err_reset_ahb;
++ }
++
++ return 0;
++
++err_reset_ahb:
++ clk_disable_unprepare(res->phy_clk);
++err_clk_phy:
++ clk_disable_unprepare(res->core_clk);
++err_clk_core:
++ clk_disable_unprepare(res->iface_clk);
++err_iface:
++ regulator_disable(res->vdda_phy);
++err_vdda_phy:
++ regulator_disable(res->vdda_refclk);
++err_refclk:
++ regulator_disable(res->vdda);
++ return ret;
++}
++
++static int qcom_pcie_enable_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ ret = reset_control_deassert(res->core);
++ if (ret) {
++ dev_err(dev, "cannot deassert core reset\n");
++ return ret;
++ }
++
++ ret = clk_prepare_enable(res->aux);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable aux clock\n");
++ goto err_res;
++ }
++
++ ret = clk_prepare_enable(res->iface);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable iface clock\n");
++ goto err_aux;
++ }
++
++ ret = clk_prepare_enable(res->master_bus);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable master_bus clock\n");
++ goto err_iface;
++ }
++
++ ret = clk_prepare_enable(res->slave_bus);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable slave_bus clock\n");
++ goto err_master;
++ }
++
++ ret = regulator_enable(res->vdda);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda regulator\n");
++ goto err_slave;
++ }
++
++ return 0;
++
++err_slave:
++ clk_disable_unprepare(res->slave_bus);
++err_master:
++ clk_disable_unprepare(res->master_bus);
++err_iface:
++ clk_disable_unprepare(res->iface);
++err_aux:
++ clk_disable_unprepare(res->aux);
++err_res:
++ reset_control_assert(res->core);
++
++ return ret;
++}
++
++static int qcom_pcie_get_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++
++ res->vdda = devm_regulator_get(dev, "vdda");
++ if (IS_ERR(res->vdda))
++ return PTR_ERR(res->vdda);
++
++ res->vdda_phy = devm_regulator_get(dev, "vdda_phy");
++ if (IS_ERR(res->vdda_phy))
++ return PTR_ERR(res->vdda_phy);
++
++ res->vdda_refclk = devm_regulator_get(dev, "vdda_refclk");
++ if (IS_ERR(res->vdda_refclk))
++ return PTR_ERR(res->vdda_refclk);
++
++ res->iface_clk = devm_clk_get(dev, "iface");
++ if (IS_ERR(res->iface_clk))
++ return PTR_ERR(res->iface_clk);
++
++ res->core_clk = devm_clk_get(dev, "core");
++ if (IS_ERR(res->core_clk))
++ return PTR_ERR(res->core_clk);
++
++ res->phy_clk = devm_clk_get(dev, "phy");
++ if (IS_ERR(res->phy_clk))
++ return PTR_ERR(res->phy_clk);
++
++ res->pci_reset = devm_reset_control_get(dev, "pci");
++ if (IS_ERR(res->pci_reset))
++ return PTR_ERR(res->pci_reset);
++
++ res->axi_reset = devm_reset_control_get(dev, "axi");
++ if (IS_ERR(res->axi_reset))
++ return PTR_ERR(res->axi_reset);
++
++ res->ahb_reset = devm_reset_control_get(dev, "ahb");
++ if (IS_ERR(res->ahb_reset))
++ return PTR_ERR(res->ahb_reset);
++
++ res->por_reset = devm_reset_control_get(dev, "por");
++ if (IS_ERR(res->por_reset))
++ return PTR_ERR(res->por_reset);
++
++ res->phy_reset = devm_reset_control_get(dev, "phy");
++ if (IS_ERR(res->phy_reset))
++ return PTR_ERR(res->phy_reset);
++
++ return 0;
++}
++
++static int qcom_pcie_get_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++ struct device *dev = pcie->dev;
++
++ res->vdda = devm_regulator_get(dev, "vdda");
++ if (IS_ERR(res->vdda))
++ return PTR_ERR(res->vdda);
++
++ res->iface = devm_clk_get(dev, "iface");
++ if (IS_ERR(res->iface))
++ return PTR_ERR(res->iface);
++
++ res->aux = devm_clk_get(dev, "aux");
++ if (IS_ERR(res->aux) && PTR_ERR(res->aux) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++ else if (IS_ERR(res->aux))
++ res->aux = NULL;
++
++ res->master_bus = devm_clk_get(dev, "master_bus");
++ if (IS_ERR(res->master_bus))
++ return PTR_ERR(res->master_bus);
++
++ res->slave_bus = devm_clk_get(dev, "slave_bus");
++ if (IS_ERR(res->slave_bus))
++ return PTR_ERR(res->slave_bus);
++
++ res->core = devm_reset_control_get(dev, "core");
++ if (IS_ERR(res->core))
++ return PTR_ERR(res->core);
++
++ return 0;
++}
++
++static int qcom_pcie_enable_link_training(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ struct device *dev = pp->dev;
++ int retries;
++ u32 val;
++
++ /* enable link training */
++ writel_masked(pcie->elbi + PCIE20_ELBI_SYS_CTRL, 0, BIT(0));
++
++ /* wait for up to 100ms for the link to come up */
++ retries = LINKUP_RETRIES_COUNT;
++ do {
++ val = readl(pcie->elbi + PCIE20_ELBI_SYS_STTS);
++ if (val & XMLH_LINK_UP)
++ break;
++ usleep_range(LINKUP_DELAY_MIN_US, LINKUP_DELAY_MAX_US);
++ } while (retries--);
++
++ if (retries < 0 || !dw_pcie_link_up(pp)) {
++ dev_err(dev, "link initialization failed\n");
++ return -ENXIO;
++ }
++
++ return 0;
++}
++
++static void qcom_pcie_host_init_v1(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ int ret;
++
++ qcom_ep_reset_assert(pcie);
++
++ ret = qcom_pcie_enable_resources_v1(pcie);
++ if (ret)
++ return;
++
++ /* change DBI base address */
++ writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ writel_masked(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT,
++ 0, BIT(31));
++
++ ret = phy_init(pcie->phy);
++ if (ret)
++ goto err_res;
++
++ ret = phy_power_on(pcie->phy);
++ if (ret)
++ goto err_phy;
++
++ dw_pcie_setup_rc(pp);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ dw_pcie_msi_init(pp);
++
++ qcom_ep_reset_deassert(pcie);
++
++ ret = qcom_pcie_enable_link_training(pp);
++ if (ret)
++ goto err;
++
++ return;
++
++err:
++ qcom_ep_reset_assert(pcie);
++ phy_power_off(pcie->phy);
++err_phy:
++ phy_exit(pcie->phy);
++err_res:
++ qcom_pcie_disable_resources_v1(pcie);
++}
++
++static void qcom_pcie_host_init_v0(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ qcom_ep_reset_assert(pcie);
++
++ ret = qcom_pcie_enable_resources_v0(pcie);
++ if (ret)
++ return;
++
++ writel_masked(pcie->parf + PCIE20_PARF_PHY_CTRL, BIT(0), 0);
++
++ /* enable external reference clock */
++ writel_masked(pcie->parf + PCIE20_PARF_PHY_REFCLK, 0, BIT(16));
++
++ ret = reset_control_deassert(res->phy_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert phy reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->pci_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert pci reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->por_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert por reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->axi_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert axi reset\n");
++ return;
++ }
++
++ /* wait 150ms for clock acquisition */
++ usleep_range(10000, 15000);
++
++ dw_pcie_setup_rc(pp);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ dw_pcie_msi_init(pp);
++
++ qcom_ep_reset_deassert(pcie);
++
++ ret = qcom_pcie_enable_link_training(pp);
++ if (ret)
++ goto err;
++
++ return;
++err:
++ qcom_ep_reset_assert(pcie);
++ qcom_pcie_disable_resources_v0(pcie);
++}
++
++static void qcom_pcie_host_init(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++
++ if (pcie->version == PCIE_V0)
++ return qcom_pcie_host_init_v0(pp);
++ else
++ return qcom_pcie_host_init_v1(pp);
++}
++
++static int
++qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size, u32 *val)
++{
++ /* the device class is not reported correctly from the register */
++ if (where == PCI_CLASS_REVISION && size == 4) {
++ *val = readl(pp->dbi_base + PCI_CLASS_REVISION);
++ *val &= ~(0xffff << 16);
++ *val |= PCI_CLASS_BRIDGE_PCI << 16;
++ return PCIBIOS_SUCCESSFUL;
++ }
++
++ return dw_pcie_cfg_read(pp->dbi_base + (where & ~0x3), where,
++ size, val);
++}
++
++static struct pcie_host_ops qcom_pcie_ops = {
++ .link_up = qcom_pcie_link_up,
++ .host_init = qcom_pcie_host_init,
++ .rd_own_conf = qcom_pcie_rd_own_conf,
++};
++
++static const struct of_device_id qcom_pcie_match[] = {
++ { .compatible = "qcom,pcie-v0", .data = (void *)PCIE_V0 },
++ { .compatible = "qcom,pcie-v1", .data = (void *)PCIE_V1 },
++ { }
++};
++
++static int qcom_pcie_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ const struct of_device_id *match;
++ struct resource *res;
++ struct qcom_pcie *pcie;
++ struct pcie_port *pp;
++ int ret;
++
++ match = of_match_node(qcom_pcie_match, dev->of_node);
++ if (!match)
++ return -ENXIO;
++
++ pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
++ if (!pcie)
++ return -ENOMEM;
++
++ pcie->version = (unsigned int)match->data;
++
++ pcie->reset = devm_gpiod_get_optional(dev, "perst");
++ if (IS_ERR(pcie->reset) && PTR_ERR(pcie->reset) == -EPROBE_DEFER)
++ return PTR_ERR(pcie->reset);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf");
++ pcie->parf = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->parf))
++ return PTR_ERR(pcie->parf);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
++ pcie->dbi = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->dbi))
++ return PTR_ERR(pcie->dbi);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "elbi");
++ pcie->elbi = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->elbi))
++ return PTR_ERR(pcie->elbi);
++
++ pcie->phy = devm_phy_optional_get(dev, "pciephy");
++ if (IS_ERR(pcie->phy))
++ return PTR_ERR(pcie->phy);
++
++ pcie->dev = dev;
++
++ if (pcie->version == PCIE_V0)
++ ret = qcom_pcie_get_resources_v0(pcie);
++ else
++ ret = qcom_pcie_get_resources_v1(pcie);
++
++ if (ret)
++ return ret;
++
++ pp = &pcie->pp;
++ pp->dev = dev;
++ pp->dbi_base = pcie->dbi;
++ pp->root_bus_nr = -1;
++ pp->ops = &qcom_pcie_ops;
++
++ if (IS_ENABLED(CONFIG_PCI_MSI)) {
++ pp->msi_irq = platform_get_irq_byname(pdev, "msi");
++ if (pp->msi_irq < 0) {
++ dev_err(dev, "cannot get msi irq\n");
++ return pp->msi_irq;
++ }
++
++ ret = devm_request_irq(dev, pp->msi_irq,
++ qcom_pcie_msi_irq_handler,
++ IRQF_SHARED, "qcom-pcie-msi", pp);
++ if (ret) {
++ dev_err(dev, "cannot request msi irq\n");
++ return ret;
++ }
++ }
++
++ ret = dw_pcie_host_init(pp);
++ if (ret) {
++ dev_err(dev, "cannot initialize host\n");
++ return ret;
++ }
++
++ platform_set_drvdata(pdev, pcie);
++
++ return 0;
++}
++
++static int qcom_pcie_remove(struct platform_device *pdev)
++{
++ struct qcom_pcie *pcie = platform_get_drvdata(pdev);
++
++ qcom_ep_reset_assert(pcie);
++ phy_power_off(pcie->phy);
++ phy_exit(pcie->phy);
++ if (pcie->version == PCIE_V0)
++ qcom_pcie_disable_resources_v0(pcie);
++ else
++ qcom_pcie_disable_resources_v1(pcie);
++
++ return 0;
++}
++
++static struct platform_driver qcom_pcie_driver = {
++ .probe = qcom_pcie_probe,
++ .remove = qcom_pcie_remove,
++ .driver = {
++ .name = "qcom-pcie",
++ .of_match_table = qcom_pcie_match,
++ },
++};
++
++module_platform_driver(qcom_pcie_driver);
++
++MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
++MODULE_DESCRIPTION("Qualcomm PCIe root complex driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:qcom-pcie");
+--- a/drivers/pci/host/Makefile
++++ b/drivers/pci/host/Makefile
+@@ -13,3 +13,4 @@ obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx
+ obj-$(CONFIG_PCI_XGENE) += pci-xgene.o
+ obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o
+ obj-$(CONFIG_PCI_VERSATILE) += pci-versatile.o
++obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o
--- /dev/null
+From 5b40516b2f5fb9b2a7d6d3e2e924f12ec9d183a8 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Tue, 21 Apr 2015 19:01:42 -0700
+Subject: [PATCH 8/9] ARM: dts: qcom: add pcie nodes to ipq806x platforms
+
+qcom-pcie driver now supports version 0 of the controller. This change
+adds the corresponding entries to the IPQ806x dtsi file and
+corresponding platform (AP148).
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 30 ++++++++
+ arch/arm/boot/dts/qcom-ipq8064.dtsi | 124 +++++++++++++++++++++++++++++++
+ 2 files changed, 154 insertions(+)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -30,6 +30,22 @@
+ bias-disable;
+ };
+
++ pcie1_pins: pcie1_pinmux {
++ mux {
++ pins = "gpio3";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
++ pcie2_pins: pcie2_pinmux {
++ mux {
++ pins = "gpio48";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
+ spi_pins: spi_pins {
+ mux {
+ pins = "gpio18", "gpio19", "gpio21";
+@@ -112,5 +128,19 @@
+ sata@29000000 {
+ status = "ok";
+ };
++
++ pcie0: pci@1b500000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 3 0>;
++ pinctrl-0 = <&pcie1_pins>;
++ pinctrl-names = "default";
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 48 0>;
++ pinctrl-0 = <&pcie2_pins>;
++ pinctrl-names = "default";
++ };
+ };
+ };
+--- a/arch/arm/boot/dts/qcom-ipq8064-db149.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
+@@ -37,6 +37,30 @@
+ bias-disable;
+ };
+
++ pcie1_pins: pcie1_pinmux {
++ mux {
++ pins = "gpio3";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
++ pcie2_pins: pcie2_pinmux {
++ mux {
++ pins = "gpio48";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
++ pcie3_pins: pcie3_pinmux {
++ mux {
++ pins = "gpio63";
++ drive-strength = <2>;
++ bias-disable;
++ };
++ };
++
+ spi_pins: spi_pins {
+ mux {
+ pins = "gpio18", "gpio19", "gpio21";
+@@ -153,6 +177,27 @@
+ status = "ok";
+ };
+
++ pcie0: pci@1b500000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 3 0>;
++ pinctrl-0 = <&pcie1_pins>;
++ pinctrl-names = "default";
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 48 0>;
++ pinctrl-0 = <&pcie2_pins>;
++ pinctrl-names = "default";
++ };
++
++ pcie2: pci@1b900000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 63 0>;
++ pinctrl-0 = <&pcie3_pins>;
++ pinctrl-names = "default";
++ };
++
+ mdio0: mdio {
+ compatible = "virtual,mdio-gpio";
+ #address-cells = <1>;
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -3,6 +3,7 @@
+ #include "skeleton.dtsi"
+ #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
+ #include <dt-bindings/soc/qcom,gsbi.h>
++#include <dt-bindings/reset/qcom,gcc-ipq806x.h>
+
+ / {
+ model = "Qualcomm IPQ8064";
+@@ -291,5 +292,128 @@
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
++
++ pcie0: pci@1b500000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b500000 0x1000
++ 0x1b502000 0x80
++ 0x1b600000 0x100
++ 0x0ff00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_A_CLK>,
++ <&gcc PCIE_H_CLK>,
++ <&gcc PCIE_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_ACLK_RESET>,
++ <&gcc PCIE_HCLK_RESET>,
++ <&gcc PCIE_POR_RESET>,
++ <&gcc PCIE_PCI_RESET>,
++ <&gcc PCIE_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ status = "disabled";
++ };
++
++ pcie1: pci@1b700000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b700000 0x1000
++ 0x1b702000 0x80
++ 0x1b800000 0x100
++ 0x31f00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <1>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0 0x31e00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x00000000 0x2e000000 0 0x03e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 57 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 58 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 59 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 60 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 61 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_1_A_CLK>,
++ <&gcc PCIE_1_H_CLK>,
++ <&gcc PCIE_1_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_1_ACLK_RESET>,
++ <&gcc PCIE_1_HCLK_RESET>,
++ <&gcc PCIE_1_POR_RESET>,
++ <&gcc PCIE_1_PCI_RESET>,
++ <&gcc PCIE_1_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ status = "disabled";
++ };
++
++ pcie2: pci@1b900000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b900000 0x1000
++ 0x1b902000 0x80
++ 0x1ba00000 0x100
++ 0x35f00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <2>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0 0x35e00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x00000000 0x32000000 0 0x03e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 71 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 72 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 73 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 74 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 75 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_2_A_CLK>,
++ <&gcc PCIE_2_H_CLK>,
++ <&gcc PCIE_2_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_2_ACLK_RESET>,
++ <&gcc PCIE_2_HCLK_RESET>,
++ <&gcc PCIE_2_POR_RESET>,
++ <&gcc PCIE_2_PCI_RESET>,
++ <&gcc PCIE_2_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ status = "disabled";
++ };
+ };
+ };
--- /dev/null
+From f004aa1dec6e2e206be025de15b115d60f2b21e3 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Tue, 21 Apr 2015 19:09:07 -0700
+Subject: [PATCH 9/9] ARM: qcom: automatically select PCI_DOMAINS if PCI is
+ enabled
+
+If multiple PCIe devices are present in the system, the kernel will
+panic at boot time when trying to scan the PCI buses. This happens on
+IPQ806x based platforms, which has 3 PCIe ports.
+
+Enabling this option allows the kernel to assign the pci-domains
+according to the device-tree content. This allows multiple PCIe
+controllers to coexist in the system.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/mach-qcom/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/mach-qcom/Kconfig
++++ b/arch/arm/mach-qcom/Kconfig
+@@ -5,6 +5,7 @@ menuconfig ARCH_QCOM
+ select ARM_AMBA
+ select PINCTRL
+ select QCOM_SCM if SMP
++ select PCI_DOMAINS if PCI
+ help
+ Support for Qualcomm's devicetree based systems.
+
--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
-@@ -18,8 +18,15 @@
- bootargs = "console=ttyMSM0,115200 root=/dev/mtdblock12 rootfstype=squashfs,jffs2";
+@@ -22,8 +22,15 @@
+ linux,stdout-path = "serial0:115200n8";
};
+ aliases {
i2c4_pins: i2c4_pinmux {
pins = "gpio12", "gpio13";
function = "gsbi4";
-@@ -34,6 +41,25 @@
+@@ -54,6 +61,25 @@
bias-none;
};
};
};
gsbi@16300000 {
-@@ -72,6 +98,7 @@
+@@ -92,6 +118,7 @@
#size-cells = <1>;
spi-max-frequency = <50000000>;
reg = <0>;
+ m25p,fast-read;
partition@0 {
- label = "0:SBL1";
-@@ -148,5 +175,66 @@
- sata@29000000 {
- status = "ok";
+ label = "lowlevel_init";
+@@ -142,5 +169,66 @@
+ pinctrl-0 = <&pcie2_pins>;
+ pinctrl-names = "default";
};
+
+ mdio0: mdio {
};
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
-@@ -3,6 +3,7 @@
- #include "skeleton.dtsi"
+@@ -4,6 +4,7 @@
#include <dt-bindings/clock/qcom,gcc-ipq806x.h>
#include <dt-bindings/soc/qcom,gsbi.h>
+ #include <dt-bindings/reset/qcom,gcc-ipq806x.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
/ {
model = "Qualcomm IPQ8064";
-@@ -279,5 +280,42 @@
- #clock-cells = <1>;
- #reset-cells = <1>;
+@@ -415,5 +416,42 @@
+
+ status = "disabled";
};
+
+ nss-gmac-common {
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