--- /dev/null
+From 41b7b06b494eef5a081363566314960306437d73 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 21 Mar 2013 17:49:02 +0100
+Subject: [PATCH 29/79] MIPS: ralink: adds support for MT7620 SoC family
+
+Add support code for mt7620 SOC.
+
+The code detects the SoC and registers the clk / pinmux settings.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+Acked-by: Gabor Juhos <juhosg@openwrt.org>
+Patchwork: http://patchwork.linux-mips.org/patch/5177/
+---
+ arch/mips/include/asm/mach-ralink/mt7620.h | 76 ++++++++++
+ arch/mips/ralink/Kconfig | 3 +
+ arch/mips/ralink/Makefile | 1 +
+ arch/mips/ralink/Platform | 5 +
+ arch/mips/ralink/mt7620.c | 214 ++++++++++++++++++++++++++++
+ 5 files changed, 299 insertions(+)
+ create mode 100644 arch/mips/include/asm/mach-ralink/mt7620.h
+ create mode 100644 arch/mips/ralink/mt7620.c
+
+diff --git a/arch/mips/include/asm/mach-ralink/mt7620.h b/arch/mips/include/asm/mach-ralink/mt7620.h
+new file mode 100644
+index 0000000..b272649
+--- /dev/null
++++ b/arch/mips/include/asm/mach-ralink/mt7620.h
+@@ -0,0 +1,76 @@
++/*
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ *
++ * Parts of this file are based on Ralink's 2.6.21 BSP
++ *
++ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
++ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
++ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
++ */
++
++#ifndef _MT7620_REGS_H_
++#define _MT7620_REGS_H_
++
++#define MT7620_SYSC_BASE 0x10000000
++
++#define SYSC_REG_CHIP_NAME0 0x00
++#define SYSC_REG_CHIP_NAME1 0x04
++#define SYSC_REG_CHIP_REV 0x0c
++#define SYSC_REG_SYSTEM_CONFIG0 0x10
++#define SYSC_REG_SYSTEM_CONFIG1 0x14
++#define SYSC_REG_CPLL_CONFIG0 0x54
++#define SYSC_REG_CPLL_CONFIG1 0x58
++
++#define MT7620N_CHIP_NAME0 0x33365452
++#define MT7620N_CHIP_NAME1 0x20203235
++
++#define MT7620A_CHIP_NAME0 0x3637544d
++#define MT7620A_CHIP_NAME1 0x20203032
++
++#define CHIP_REV_PKG_MASK 0x1
++#define CHIP_REV_PKG_SHIFT 16
++#define CHIP_REV_VER_MASK 0xf
++#define CHIP_REV_VER_SHIFT 8
++#define CHIP_REV_ECO_MASK 0xf
++
++#define CPLL_SW_CONFIG_SHIFT 31
++#define CPLL_SW_CONFIG_MASK 0x1
++#define CPLL_CPU_CLK_SHIFT 24
++#define CPLL_CPU_CLK_MASK 0x1
++#define CPLL_MULT_RATIO_SHIFT 16
++#define CPLL_MULT_RATIO 0x7
++#define CPLL_DIV_RATIO_SHIFT 10
++#define CPLL_DIV_RATIO 0x3
++
++#define SYSCFG0_DRAM_TYPE_MASK 0x3
++#define SYSCFG0_DRAM_TYPE_SHIFT 4
++#define SYSCFG0_DRAM_TYPE_SDRAM 0
++#define SYSCFG0_DRAM_TYPE_DDR1 1
++#define SYSCFG0_DRAM_TYPE_DDR2 2
++
++#define MT7620_GPIO_MODE_I2C BIT(0)
++#define MT7620_GPIO_MODE_UART0_SHIFT 2
++#define MT7620_GPIO_MODE_UART0_MASK 0x7
++#define MT7620_GPIO_MODE_UART0(x) ((x) << MT7620_GPIO_MODE_UART0_SHIFT)
++#define MT7620_GPIO_MODE_UARTF 0x0
++#define MT7620_GPIO_MODE_PCM_UARTF 0x1
++#define MT7620_GPIO_MODE_PCM_I2S 0x2
++#define MT7620_GPIO_MODE_I2S_UARTF 0x3
++#define MT7620_GPIO_MODE_PCM_GPIO 0x4
++#define MT7620_GPIO_MODE_GPIO_UARTF 0x5
++#define MT7620_GPIO_MODE_GPIO_I2S 0x6
++#define MT7620_GPIO_MODE_GPIO 0x7
++#define MT7620_GPIO_MODE_UART1 BIT(5)
++#define MT7620_GPIO_MODE_MDIO BIT(8)
++#define MT7620_GPIO_MODE_RGMII1 BIT(9)
++#define MT7620_GPIO_MODE_RGMII2 BIT(10)
++#define MT7620_GPIO_MODE_SPI BIT(11)
++#define MT7620_GPIO_MODE_SPI_REF_CLK BIT(12)
++#define MT7620_GPIO_MODE_WLED BIT(13)
++#define MT7620_GPIO_MODE_JTAG BIT(15)
++#define MT7620_GPIO_MODE_EPHY BIT(15)
++#define MT7620_GPIO_MODE_WDT BIT(22)
++
++#endif
+diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
+index ce57d3e..86f6c77 100644
+--- a/arch/mips/ralink/Kconfig
++++ b/arch/mips/ralink/Kconfig
+@@ -20,6 +20,9 @@ choice
+ select USB_ARCH_HAS_OHCI
+ select USB_ARCH_HAS_EHCI
+
++ config SOC_MT7620
++ bool "MT7620"
++
+ endchoice
+
+ choice
+diff --git a/arch/mips/ralink/Makefile b/arch/mips/ralink/Makefile
+index ba9669c..38cf1a8 100644
+--- a/arch/mips/ralink/Makefile
++++ b/arch/mips/ralink/Makefile
+@@ -11,6 +11,7 @@ obj-y := prom.o of.o reset.o clk.o irq.o
+ obj-$(CONFIG_SOC_RT288X) += rt288x.o
+ obj-$(CONFIG_SOC_RT305X) += rt305x.o
+ obj-$(CONFIG_SOC_RT3883) += rt3883.o
++obj-$(CONFIG_SOC_MT7620) += mt7620.o
+
+ obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
+
+diff --git a/arch/mips/ralink/Platform b/arch/mips/ralink/Platform
+index f67c08d..b2cbf16 100644
+--- a/arch/mips/ralink/Platform
++++ b/arch/mips/ralink/Platform
+@@ -18,3 +18,8 @@ load-$(CONFIG_SOC_RT305X) += 0xffffffff80000000
+ # Ralink RT3883
+ #
+ load-$(CONFIG_SOC_RT3883) += 0xffffffff80000000
++
++#
++# Ralink MT7620
++#
++load-$(CONFIG_SOC_MT7620) += 0xffffffff80000000
+diff --git a/arch/mips/ralink/mt7620.c b/arch/mips/ralink/mt7620.c
+new file mode 100644
+index 0000000..eb00ab8
+--- /dev/null
++++ b/arch/mips/ralink/mt7620.c
+@@ -0,0 +1,214 @@
++/*
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ *
++ * Parts of this file are based on Ralink's 2.6.21 BSP
++ *
++ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
++ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
++ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/module.h>
++
++#include <asm/mipsregs.h>
++#include <asm/mach-ralink/ralink_regs.h>
++#include <asm/mach-ralink/mt7620.h>
++
++#include "common.h"
++
++/* does the board have sdram or ddram */
++static int dram_type;
++
++/* the pll dividers */
++static u32 mt7620_clk_divider[] = { 2, 3, 4, 8 };
++
++static struct ralink_pinmux_grp mode_mux[] = {
++ {
++ .name = "i2c",
++ .mask = MT7620_GPIO_MODE_I2C,
++ .gpio_first = 1,
++ .gpio_last = 2,
++ }, {
++ .name = "spi",
++ .mask = MT7620_GPIO_MODE_SPI,
++ .gpio_first = 3,
++ .gpio_last = 6,
++ }, {
++ .name = "uartlite",
++ .mask = MT7620_GPIO_MODE_UART1,
++ .gpio_first = 15,
++ .gpio_last = 16,
++ }, {
++ .name = "wdt",
++ .mask = MT7620_GPIO_MODE_WDT,
++ .gpio_first = 17,
++ .gpio_last = 17,
++ }, {
++ .name = "mdio",
++ .mask = MT7620_GPIO_MODE_MDIO,
++ .gpio_first = 22,
++ .gpio_last = 23,
++ }, {
++ .name = "rgmii1",
++ .mask = MT7620_GPIO_MODE_RGMII1,
++ .gpio_first = 24,
++ .gpio_last = 35,
++ }, {
++ .name = "spi refclk",
++ .mask = MT7620_GPIO_MODE_SPI_REF_CLK,
++ .gpio_first = 37,
++ .gpio_last = 39,
++ }, {
++ .name = "jtag",
++ .mask = MT7620_GPIO_MODE_JTAG,
++ .gpio_first = 40,
++ .gpio_last = 44,
++ }, {
++ /* shared lines with jtag */
++ .name = "ephy",
++ .mask = MT7620_GPIO_MODE_EPHY,
++ .gpio_first = 40,
++ .gpio_last = 44,
++ }, {
++ .name = "nand",
++ .mask = MT7620_GPIO_MODE_JTAG,
++ .gpio_first = 45,
++ .gpio_last = 59,
++ }, {
++ .name = "rgmii2",
++ .mask = MT7620_GPIO_MODE_RGMII2,
++ .gpio_first = 60,
++ .gpio_last = 71,
++ }, {
++ .name = "wled",
++ .mask = MT7620_GPIO_MODE_WLED,
++ .gpio_first = 72,
++ .gpio_last = 72,
++ }, {0}
++};
++
++static struct ralink_pinmux_grp uart_mux[] = {
++ {
++ .name = "uartf",
++ .mask = MT7620_GPIO_MODE_UARTF,
++ .gpio_first = 7,
++ .gpio_last = 14,
++ }, {
++ .name = "pcm uartf",
++ .mask = MT7620_GPIO_MODE_PCM_UARTF,
++ .gpio_first = 7,
++ .gpio_last = 14,
++ }, {
++ .name = "pcm i2s",
++ .mask = MT7620_GPIO_MODE_PCM_I2S,
++ .gpio_first = 7,
++ .gpio_last = 14,
++ }, {
++ .name = "i2s uartf",
++ .mask = MT7620_GPIO_MODE_I2S_UARTF,
++ .gpio_first = 7,
++ .gpio_last = 14,
++ }, {
++ .name = "pcm gpio",
++ .mask = MT7620_GPIO_MODE_PCM_GPIO,
++ .gpio_first = 11,
++ .gpio_last = 14,
++ }, {
++ .name = "gpio uartf",
++ .mask = MT7620_GPIO_MODE_GPIO_UARTF,
++ .gpio_first = 7,
++ .gpio_last = 10,
++ }, {
++ .name = "gpio i2s",
++ .mask = MT7620_GPIO_MODE_GPIO_I2S,
++ .gpio_first = 7,
++ .gpio_last = 10,
++ }, {
++ .name = "gpio",
++ .mask = MT7620_GPIO_MODE_GPIO,
++ }, {0}
++};
++
++struct ralink_pinmux rt_gpio_pinmux = {
++ .mode = mode_mux,
++ .uart = uart_mux,
++ .uart_shift = MT7620_GPIO_MODE_UART0_SHIFT,
++ .uart_mask = MT7620_GPIO_MODE_GPIO,
++};
++
++void __init ralink_clk_init(void)
++{
++ unsigned long cpu_rate, sys_rate;
++ u32 c0 = rt_sysc_r32(SYSC_REG_CPLL_CONFIG0);
++ u32 c1 = rt_sysc_r32(SYSC_REG_CPLL_CONFIG1);
++ u32 swconfig = (c0 >> CPLL_SW_CONFIG_SHIFT) & CPLL_SW_CONFIG_MASK;
++ u32 cpu_clk = (c1 >> CPLL_CPU_CLK_SHIFT) & CPLL_CPU_CLK_MASK;
++
++ if (cpu_clk) {
++ cpu_rate = 480000000;
++ } else if (!swconfig) {
++ cpu_rate = 600000000;
++ } else {
++ u32 m = (c0 >> CPLL_MULT_RATIO_SHIFT) & CPLL_MULT_RATIO;
++ u32 d = (c0 >> CPLL_DIV_RATIO_SHIFT) & CPLL_DIV_RATIO;
++
++ cpu_rate = ((40 * (m + 24)) / mt7620_clk_divider[d]) * 1000000;
++ }
++
++ if (dram_type == SYSCFG0_DRAM_TYPE_SDRAM)
++ sys_rate = cpu_rate / 4;
++ else
++ sys_rate = cpu_rate / 3;
++
++ ralink_clk_add("cpu", cpu_rate);
++ ralink_clk_add("10000100.timer", 40000000);
++ ralink_clk_add("10000500.uart", 40000000);
++ ralink_clk_add("10000c00.uartlite", 40000000);
++}
++
++void __init ralink_of_remap(void)
++{
++ rt_sysc_membase = plat_of_remap_node("ralink,mt7620a-sysc");
++ rt_memc_membase = plat_of_remap_node("ralink,mt7620a-memc");
++
++ if (!rt_sysc_membase || !rt_memc_membase)
++ panic("Failed to remap core resources");
++}
++
++void prom_soc_init(struct ralink_soc_info *soc_info)
++{
++ void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7620_SYSC_BASE);
++ unsigned char *name = NULL;
++ u32 n0;
++ u32 n1;
++ u32 rev;
++ u32 cfg0;
++
++ n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
++ n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
++
++ if (n0 == MT7620N_CHIP_NAME0 && n1 == MT7620N_CHIP_NAME1) {
++ name = "MT7620N";
++ soc_info->compatible = "ralink,mt7620n-soc";
++ } else if (n0 == MT7620A_CHIP_NAME0 && n1 == MT7620A_CHIP_NAME1) {
++ name = "MT7620A";
++ soc_info->compatible = "ralink,mt7620a-soc";
++ } else {
++ panic("mt7620: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
++ }
++
++ rev = __raw_readl(sysc + SYSC_REG_CHIP_REV);
++
++ snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
++ "Ralink %s ver:%u eco:%u",
++ name,
++ (rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK,
++ (rev & CHIP_REV_ECO_MASK));
++
++ cfg0 = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG0);
++ dram_type = (cfg0 >> SYSCFG0_DRAM_TYPE_SHIFT) & SYSCFG0_DRAM_TYPE_MASK;
++}
+--
+1.7.10.4
+
projects / 15.05 / openwrt.git / blobdiff