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Re: [PATCH v2 4/4] ARM: at91/dt: sama5d2 Xplained: pmic needs a specific sda hold time

From Nicolas Ferre <nicolas.ferre@atmel.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2 4/4] ARM: at91/dt: sama5d2 Xplained: pmic needs a specific sda hold time
Date 2015-12-03 11:40 +0100
Message-ID <qBzsT-3Jm-41@gated-at.bofh.it> (permalink)
References <qByQ9-3g4-3@gated-at.bofh.it> <qByQ9-3g4-1@gated-at.bofh.it>
Organization atmel

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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 {
> 


-- 
Nicolas Ferre
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[PATCH v2 4/4] ARM: at91/dt: sama5d2 Xplained: pmic needs a specific sda hold time Ludovic Desroches <ludovic.desroches@atmel.com> - 2015-12-03 11:00 +0100
  Re: [PATCH v2 4/4] ARM: at91/dt: sama5d2 Xplained: pmic needs a  specific sda hold time Nicolas Ferre <nicolas.ferre@atmel.com> - 2015-12-03 11:40 +0100

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