target/linux/mediatek/patches-5.15/351-cpufreq-mediatek-correct-voltages-for-MT7622-and-MT7.patch

   1 From e7697814c142c99f470c3458d49e41b25a575f23 Mon Sep 17 00:00:00 2001
   2 From: Daniel Golle <daniel@makrotopia.org>
   3 Date: Fri, 26 May 2023 10:31:40 +0100
   4 Subject: [PATCH] cpufreq: mediatek: correct voltages for MT7622 and MT7623
   5
   6 The MT6380 regulator typically used together with MT7622 does not
   7 support the current maximum processor and SRAM voltage in the cpufreq
   8 driver (1360000uV).
   9 For MT7622 limit processor and SRAM supply voltages to 1350000uV to
  10 avoid having the tracking algorithm request unsupported voltages from
  11 the regulator.
  12
  13 On MT7623 there is no separate SRAM supply and the maximum voltage used
  14 is 1300000uV. Create dedicated platform data for MT7623 to cover that
  15 case as well.
  16
  17 Fixes: 0883426fd07e3 ("cpufreq: mediatek: Raise proc and sram max voltage for MT7622/7623")
  18 Suggested-by: Jia-wei Chang <Jia-wei.Chang@mediatek.com>
  19 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  20 ---
  21  drivers/cpufreq/mediatek-cpufreq.c | 13 ++++++++++---
  22  1 file changed, 10 insertions(+), 3 deletions(-)
  23
  24 --- a/drivers/cpufreq/mediatek-cpufreq.c
  25 +++ b/drivers/cpufreq/mediatek-cpufreq.c
  26 @@ -696,9 +696,16 @@ static const struct mtk_cpufreq_platform
  27  static const struct mtk_cpufreq_platform_data mt7622_platform_data = {
  28         .min_volt_shift = 100000,
  29         .max_volt_shift = 200000,
  30 -       .proc_max_volt = 1360000,
  31 +       .proc_max_volt = 1350000,
  32         .sram_min_volt = 0,
  33 -       .sram_max_volt = 1360000,
  34 +       .sram_max_volt = 1350000,
  35 +       .ccifreq_supported = false,
  36 +};
  37 +
  38 +static const struct mtk_cpufreq_platform_data mt7623_platform_data = {
  39 +       .min_volt_shift = 100000,
  40 +       .max_volt_shift = 200000,
  41 +       .proc_max_volt = 1300000,
  42         .ccifreq_supported = false,
  43  };
  44
  45 @@ -743,7 +750,7 @@ static const struct of_device_id mtk_cpu
  46         { .compatible = "mediatek,mt2701", .data = &mt2701_platform_data },
  47         { .compatible = "mediatek,mt2712", .data = &mt2701_platform_data },
  48         { .compatible = "mediatek,mt7622", .data = &mt7622_platform_data },
  49 -       { .compatible = "mediatek,mt7623", .data = &mt7622_platform_data },
  50 +       { .compatible = "mediatek,mt7623", .data = &mt7623_platform_data },
  51         { .compatible = "mediatek,mt7988", .data = &mt7988_platform_data },
  52         { .compatible = "mediatek,mt8167", .data = &mt8516_platform_data },
  53         { .compatible = "mediatek,mt817x", .data = &mt2701_platform_data },