[v2,4/4] ARM: at91/dt: sama5d2 Xplained: pmic needs a specific sda hold time
diff mbox

Message ID 1449136434-27619-6-git-send-email-ludovic.desroches@atmel.com
State Awaiting Upstream
Headers show

Commit Message

ludovic.desroches@atmel.com Dec. 3, 2015, 9:53 a.m. UTC
Data have to be held longer for the PMIC device. The ACT8945A
datasheet claims that minimum SDA data hold time is about 300 ns.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
---
 arch/arm/boot/dts/at91-sama5d2_xplained.dts | 1 +
 1 file changed, 1 insertion(+)

Comments

Nicolas Ferre Dec. 3, 2015, 10:34 a.m. UTC | #1
Le 03/12/2015 10:53, Ludovic Desroches a écrit :
> Data have to be held longer for the PMIC device. The ACT8945A
> datasheet claims that minimum SDA data hold time is about 300 ns.
> 
> Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>

Same here, we'll take this one with at91 material in at91-4.5-dt branch
soon.

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

Thanks, bye.

> ---
>  arch/arm/boot/dts/at91-sama5d2_xplained.dts | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> index ad6de73..9bced00 100644
> --- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> +++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> @@ -129,6 +129,7 @@
>  				dmas = <0>, <0>;
>  				pinctrl-names = "default";
>  				pinctrl-0 = <&pinctrl_i2c0_default>;
> +				i2c-sda-hold-time-ns = <350>;
>  				status = "okay";
>  
>  				pmic: act8865@5b {
>

Patch
diff mbox

diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
index ad6de73..9bced00 100644
--- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
@@ -129,6 +129,7 @@ 
 				dmas = <0>, <0>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_i2c0_default>;
+				i2c-sda-hold-time-ns = <350>;
 				status = "okay";
 
 				pmic: act8865@5b {