From: Jia-Wei Chang <jia-wei.chang@xxxxxxxxxxxx>
For some MediaTek SoCs, like MT8186, it's possible that the sram regulator
is shared between CPU and CCI.
We hope regulator framework can return NULL for error handling rather
than a dummy handler from regulator_get api.
Therefore, we choose to use regulator_get_optional.
Signed-off-by: Jia-Wei Chang <jia-wei.chang@xxxxxxxxxxxx>
Signed-off-by: Rex-BC Chen <rex-bc.chen@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
drivers/cpufreq/mediatek-cpufreq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index 4d46e823c24e..559f4a383d30 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -436,7 +436,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
}
/* Both presence and absence of sram regulator are valid cases. */
- info->sram_reg = regulator_get_exclusive(cpu_dev, "sram");
+ info->sram_reg = regulator_get_optional(cpu_dev, "sram");
if (IS_ERR(info->sram_reg))
info->sram_reg = NULL;
else {
--
2.18.0
