target/linux/mediatek/patches-5.15/350-07-cpufreq-mediatek-Make-sram-regulator-optional.patch

   1 From f6114c2bc563a8050e9dc874ad87e1448865f031 Mon Sep 17 00:00:00 2001
   2 From: Jia-Wei Chang <jia-wei.chang@mediatek.com>
   3 Date: Fri, 22 Apr 2022 15:52:33 +0800
   4 Subject: [PATCH 07/21] cpufreq: mediatek: Make sram regulator optional
   5
   6 For some MediaTek SoCs, like MT8186, it's possible that the sram regulator
   7 is shared between CPU and CCI.
   8 We hope regulator framework can return error for error handling rather
   9 than a dummy handler from regulator_get api.
  10 Therefore, we choose to use regulator_get_optional.
  11
  12 Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
  13 Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
  14 Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
  15 Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
  16 ---
  17  drivers/cpufreq/mediatek-cpufreq.c | 2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 --- a/drivers/cpufreq/mediatek-cpufreq.c
  21 +++ b/drivers/cpufreq/mediatek-cpufreq.c
  22 @@ -354,7 +354,7 @@ static int mtk_cpu_dvfs_info_init(struct
  23         }
  24
  25         /* Both presence and absence of sram regulator are valid cases. */
  26 -       info->sram_reg = regulator_get_exclusive(cpu_dev, "sram");
  27 +       info->sram_reg = regulator_get_optional(cpu_dev, "sram");
  28         if (IS_ERR(info->sram_reg))
  29                 info->sram_reg = NULL;
  30         else {