target/linux/mediatek/patches-5.15/350-20-cpufreq-mediatek-Raise-proc-and-sram-max-voltage-for.patch

   1 From fe6ef09358dc0cfead9d383a8676fbe7a40fcef7 Mon Sep 17 00:00:00 2001
   2 From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
   3 Date: Fri, 24 Mar 2023 18:11:30 +0800
   4 Subject: [PATCH 20/21] cpufreq: mediatek: Raise proc and sram max voltage for
   5  MT7622/7623
   6
   7 During the addition of SRAM voltage tracking for CCI scaling, this
   8 driver got some voltage limits set for the vtrack algorithm: these
   9 were moved to platform data first, then enforced in a later commit
  10 6a17b3876bc8 ("cpufreq: mediatek: Refine mtk_cpufreq_voltage_tracking()")
  11 using these as max values for the regulator_set_voltage() calls.
  12
  13 In this case, the vsram/vproc constraints for MT7622 and MT7623
  14 were supposed to be the same as MT2701 (and a number of other SoCs),
  15 but that turned out to be a mistake because the aforementioned two
  16 SoCs' maximum voltage for both VPROC and VPROC_SRAM is 1.36V.
  17
  18 Fix that by adding new platform data for MT7622/7623 declaring the
  19 right {proc,sram}_max_volt parameter.
  20
  21 Fixes: ead858bd128d ("cpufreq: mediatek: Move voltage limits to platform data")
  22 Fixes: 6a17b3876bc8 ("cpufreq: mediatek: Refine mtk_cpufreq_voltage_tracking()")
  23 Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
  24 Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
  25 Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
  26 ---
  27  drivers/cpufreq/mediatek-cpufreq.c | 13 +++++++++++--
  28  1 file changed, 11 insertions(+), 2 deletions(-)
  29
  30 --- a/drivers/cpufreq/mediatek-cpufreq.c
  31 +++ b/drivers/cpufreq/mediatek-cpufreq.c
  32 @@ -693,6 +693,15 @@ static const struct mtk_cpufreq_platform
  33         .ccifreq_supported = false,
  34  };
  35
  36 +static const struct mtk_cpufreq_platform_data mt7622_platform_data = {
  37 +       .min_volt_shift = 100000,
  38 +       .max_volt_shift = 200000,
  39 +       .proc_max_volt = 1360000,
  40 +       .sram_min_volt = 0,
  41 +       .sram_max_volt = 1360000,
  42 +       .ccifreq_supported = false,
  43 +};
  44 +
  45  static const struct mtk_cpufreq_platform_data mt8183_platform_data = {
  46         .min_volt_shift = 100000,
  47         .max_volt_shift = 200000,
  48 @@ -724,8 +733,8 @@ static const struct mtk_cpufreq_platform
  49  static const struct of_device_id mtk_cpufreq_machines[] __initconst = {
  50         { .compatible = "mediatek,mt2701", .data = &mt2701_platform_data },
  51         { .compatible = "mediatek,mt2712", .data = &mt2701_platform_data },
  52 -       { .compatible = "mediatek,mt7622", .data = &mt2701_platform_data },
  53 -       { .compatible = "mediatek,mt7623", .data = &mt2701_platform_data },
  54 +       { .compatible = "mediatek,mt7622", .data = &mt7622_platform_data },
  55 +       { .compatible = "mediatek,mt7623", .data = &mt7622_platform_data },
  56         { .compatible = "mediatek,mt8167", .data = &mt8516_platform_data },
  57         { .compatible = "mediatek,mt817x", .data = &mt2701_platform_data },
  58         { .compatible = "mediatek,mt8173", .data = &mt2701_platform_data },