target/linux/ipq806x/patches/0079-clk-qcom-Add-basic-support-for-APQ8064-global-clock-.patch

   1 From 0f171b8a6e1723f0ce6f98f8b3fba7d2583088c1 Mon Sep 17 00:00:00 2001
   2 From: Kumar Gala <galak@codeaurora.org>
   3 Date: Fri, 4 Apr 2014 11:31:29 -0500
   4 Subject: [PATCH 079/182] clk: qcom: Add basic support for APQ8064 global
   5  clock controller clocks
   6
   7 The APQ8064 and MSM8960 share a significant amount of clock data and
   8 code between the two SoCs.  Rather than duplicating the data we just add
   9 support for a unqiue APQ8064 clock table into the MSM8960 code.
  10
  11 For now add just enough clocks to get a basic serial port going on an
  12 APQ8064 device.
  13
  14 Signed-off-by: Kumar Gala <galak@codeaurora.org>
  15 Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
  16 Signed-off-by: Mike Turquette <mturquette@linaro.org>
  17 [mturquette@linaro.org: trivial conflict due to missing ipq8064 support]
  18 ---
  19  .../devicetree/bindings/clock/qcom,gcc.txt         |    1 +
  20  drivers/clk/qcom/Kconfig                           |    4 +--
  21  drivers/clk/qcom/gcc-msm8960.c                     |   30 ++++++++++++++++++--
  22  3 files changed, 30 insertions(+), 5 deletions(-)
  23
  24 --- a/Documentation/devicetree/bindings/clock/qcom,gcc.txt
  25 +++ b/Documentation/devicetree/bindings/clock/qcom,gcc.txt
  26 @@ -4,6 +4,7 @@ Qualcomm Global Clock & Reset Controller
  27  Required properties :
  28  - compatible : shall contain only one of the following:
  29
  30 +                       "qcom,gcc-apq8064"
  31                         "qcom,gcc-msm8660"
  32                         "qcom,gcc-msm8960"
  33                         "qcom,gcc-msm8974"
  34 --- a/drivers/clk/qcom/Kconfig
  35 +++ b/drivers/clk/qcom/Kconfig
  36 @@ -13,10 +13,10 @@ config MSM_GCC_8660
  37           i2c, USB, SD/eMMC, etc.
  38
  39  config MSM_GCC_8960
  40 -       tristate "MSM8960 Global Clock Controller"
  41 +       tristate "APQ8064/MSM8960 Global Clock Controller"
  42         depends on COMMON_CLK_QCOM
  43         help
  44 -         Support for the global clock controller on msm8960 devices.
  45 +         Support for the global clock controller on apq8064/msm8960 devices.
  46           Say Y if you want to use peripheral devices such as UART, SPI,
  47           i2c, USB, SD/eMMC, SATA, PCIe, etc.
  48
  49 --- a/drivers/clk/qcom/gcc-msm8960.c
  50 +++ b/drivers/clk/qcom/gcc-msm8960.c
  51 @@ -1,5 +1,5 @@
  52  /*
  53 - * Copyright (c) 2013, The Linux Foundation. All rights reserved.
  54 + * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
  55   *
  56   * This software is licensed under the terms of the GNU General Public
  57   * License version 2, as published by the Free Software Foundation, and
  58 @@ -2868,6 +2868,16 @@ static const struct qcom_reset_map gcc_m
  59         [RIVA_RESET] = { 0x35e0 },
  60  };
  61
  62 +static struct clk_regmap *gcc_apq8064_clks[] = {
  63 +       [PLL8] = &pll8.clkr,
  64 +       [PLL8_VOTE] = &pll8_vote,
  65 +       [GSBI7_UART_SRC] = &gsbi7_uart_src.clkr,
  66 +       [GSBI7_UART_CLK] = &gsbi7_uart_clk.clkr,
  67 +       [GSBI7_QUP_SRC] = &gsbi7_qup_src.clkr,
  68 +       [GSBI7_QUP_CLK] = &gsbi7_qup_clk.clkr,
  69 +       [GSBI7_H_CLK] = &gsbi7_h_clk.clkr,
  70 +};
  71 +
  72  static const struct regmap_config gcc_msm8960_regmap_config = {
  73         .reg_bits       = 32,
  74         .reg_stride     = 4,
  75 @@ -2884,8 +2894,17 @@ static const struct qcom_cc_desc gcc_msm
  76         .num_resets = ARRAY_SIZE(gcc_msm8960_resets),
  77  };
  78
  79 +static const struct qcom_cc_desc gcc_apq8064_desc = {
  80 +       .config = &gcc_msm8960_regmap_config,
  81 +       .clks = gcc_apq8064_clks,
  82 +       .num_clks = ARRAY_SIZE(gcc_apq8064_clks),
  83 +       .resets = gcc_msm8960_resets,
  84 +       .num_resets = ARRAY_SIZE(gcc_msm8960_resets),
  85 +};
  86 +
  87  static const struct of_device_id gcc_msm8960_match_table[] = {
  88 -       { .compatible = "qcom,gcc-msm8960" },
  89 +       { .compatible = "qcom,gcc-msm8960", .data = &gcc_msm8960_desc },
  90 +       { .compatible = "qcom,gcc-apq8064", .data = &gcc_apq8064_desc },
  91         { }
  92  };
  93  MODULE_DEVICE_TABLE(of, gcc_msm8960_match_table);
  94 @@ -2894,6 +2913,11 @@ static int gcc_msm8960_probe(struct plat
  95  {
  96         struct clk *clk;
  97         struct device *dev = &pdev->dev;
  98 +       const struct of_device_id *match;
  99 +
 100 +       match = of_match_device(gcc_msm8960_match_table, &pdev->dev);
 101 +       if (!match)
 102 +               return -EINVAL;
 103
 104         /* Temporary until RPM clocks supported */
 105         clk = clk_register_fixed_rate(dev, "cxo", NULL, CLK_IS_ROOT, 19200000);
 106 @@ -2904,7 +2928,7 @@ static int gcc_msm8960_probe(struct plat
 107         if (IS_ERR(clk))
 108                 return PTR_ERR(clk);
 109
 110 -       return qcom_cc_probe(pdev, &gcc_msm8960_desc);
 111 +       return qcom_cc_probe(pdev, match->data);
 112  }
 113
 114  static int gcc_msm8960_remove(struct platform_device *pdev)