# Re: \[PATCH v2 2/4\] pinctrl: dt-bindings: samsung: add drive strength macros for Exynos5433

- From: Chanwoo Choi \<hidden\>
- Date: 2016-12-30 06:37:48 
- List: linux-devicetree
- Page: https://ratatoskr.run/linux-devicetree/2016/12/4901790
- Thread: https://ratatoskr.run/linux-devicetree/2016/12/4901774/t.md

```text
Hi Andi,

On 2016년 12월 30일 13:14, Andi Shyti wrote:
> Commit 5db7e3bb87df ("pinctrl: dt-bindings: samsung: Add header with
> values used for configuration") has added a header file for defining the
> pinctrl values in order to avoid hardcoded settings in the Exynos
> DTS related files.
> 
> Extend samsung.h to the Exynos5433 for drive strength values
> which are strictly related to the particular SoC and may defer
> from others.
> 
> Signed-off-by: Andi Shyti <redacted>
> ---
>  include/dt-bindings/pinctrl/samsung.h | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/include/dt-bindings/pinctrl/samsung.h b/include/dt-bindings/pinctrl/samsung.h
> index 6276eb785e2b..e0ebb20ffdd3 100644
> --- a/include/dt-bindings/pinctrl/samsung.h
> +++ b/include/dt-bindings/pinctrl/samsung.h
> @@ -45,6 +45,20 @@
>  #define EXYNOS5420_PIN_DRV_LV3		2
>  #define EXYNOS5420_PIN_DRV_LV4		3
>  
> +/* Drive strengths for Exynos5433 */
> +#define EXYNOS5433_PIN_DRV_FAST_SR1	0
> +#define EXYNOS5433_PIN_DRV_FAST_SR2	1
> +#define EXYNOS5433_PIN_DRV_FAST_SR3	2
> +#define EXYNOS5433_PIN_DRV_FAST_SR4	3
> +#define EXYNOS5433_PIN_DRV_FAST_SR5	4
> +#define EXYNOS5433_PIN_DRV_FAST_SR6	5
> +#define EXYNOS5433_PIN_DRV_SLOW_SR1	8
> +#define EXYNOS5433_PIN_DRV_SLOW_SR2	9
> +#define EXYNOS5433_PIN_DRV_SLOW_SR3	0xa
> +#define EXYNOS5433_PIN_DRV_SLOW_SR4	0xb
> +#define EXYNOS5433_PIN_DRV_SLOW_SR5	0xc
> +#define EXYNOS5433_PIN_DRV_SLOW_SR6	0xf
> +
>  #define EXYNOS_PIN_FUNC_INPUT		0
>  #define EXYNOS_PIN_FUNC_OUTPUT		1
>  #define EXYNOS_PIN_FUNC_2		2
> 

Looks good to me. ('SR' means "Slew Rate".)
Reviewed-by: Chanwoo Choi <redacted>

-- 
Regards,
Chanwoo Choi
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```