diff mbox series

[V4,08/14] cpufreq: mediatek: Make sram regulator optional

Message ID 20220422075239.16437-9-rex-bc.chen@mediatek.com (mailing list archive)
State New, archived
Headers show
Series cpufreq: mediatek: Cleanup and support MT8183 and MT8186 | expand

Commit Message

Rex-BC Chen (陳柏辰) April 22, 2022, 7:52 a.m. UTC 
From: Jia-Wei Chang <jia-wei.chang@mediatek.com>

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 error 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@mediatek.com>
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/cpufreq/mediatek-cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Viresh Kumar April 25, 2022, 5:36 a.m. UTC | #1 
On 22-04-22, 15:52, Rex-BC Chen wrote:
> From: Jia-Wei Chang <jia-wei.chang@mediatek.com>
> 
> 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 error 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@mediatek.com>
> Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  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 0b2ca0c8eddc..97ce96421241 100644
> --- a/drivers/cpufreq/mediatek-cpufreq.c
> +++ b/drivers/cpufreq/mediatek-cpufreq.c
> @@ -438,7 +438,7 @@ 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 {

Applied. Thanks.
diff mbox series

Patch

diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index 0b2ca0c8eddc..97ce96421241 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -438,7 +438,7 @@  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 {