Re: [PATCH v5 3/3] drivers/thermal/exymos: Fixed the efuse min max value for exynos5422

Lukasz Luba
2025-04-15T08:37:02Z

On 4/10/25 07:37, Anand Moon wrote:
> As per Exynos5422 user manual e-Fuse range min~max range is 16~76.
> if e-Fuse value is out of this range, then thermal sensor may not
> sense thermal data properly. Refactors the efuse value
> initialization logic within exynos_map_dt_data function by
> replacing the nested if-else statements with a switch statement.
> Ensures proper initialization of efuse values based on the SOC type.
>
> Signed-off-by: Anand Moon <linux.amoon@gmail.com>
> ---
> v5: None
> v4: None
> v3: Improve the logic to convert if/else to switch
> ---
> drivers/thermal/samsung/exynos_tmu.c | 19 +++++++++++++++----
> 1 file changed, 15 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
> index ac3b9d2c900c..a71cde0a4b17 100644
> --- a/drivers/thermal/samsung/exynos_tmu.c
> +++ b/drivers/thermal/samsung/exynos_tmu.c
> @@ -899,12 +899,23 @@ static int exynos_map_dt_data(struct platform_device *pdev)
> data->gain = 8;
> data->reference_voltage = 16;
> data->efuse_value = 55;
> - if (data->soc != SOC_ARCH_EXYNOS5420 &&
> - data->soc != SOC_ARCH_EXYNOS5420_TRIMINFO)
> + data->max_efuse_value = 100;
> + switch (data->soc) {
> + case SOC_ARCH_EXYNOS3250:
> + case SOC_ARCH_EXYNOS4412:
> + case SOC_ARCH_EXYNOS5250:
> + case SOC_ARCH_EXYNOS5260:
> data->min_efuse_value = 40;
> - else
> + break;
> + case SOC_ARCH_EXYNOS5420:
> + case SOC_ARCH_EXYNOS5420_TRIMINFO:
> + data->min_efuse_value = 16;
> + data->max_efuse_value = 76;
> + break;
> + default:
> data->min_efuse_value = 0;
> - data->max_efuse_value = 100;
> + break;
> + }
> break;
> case SOC_ARCH_EXYNOS5433:
> data->tmu_set_low_temp = exynos5433_tmu_set_low_temp;

I should have added that in earlier version: LGTM,

Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>