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

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Date:	Thu, 3 Dec 2015 11:34:08 +0100
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Ludovic Desroches <ludovic.desroches@...el.com>,
	<wsa@...-dreams.de>, <alexandre.belloni@...e-electrons.com>
CC:	<linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<plagnioj@...osoft.com>, <linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 4/4] ARM: at91/dt: sama5d2 Xplained: pmic needs a
 specific sda hold time

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@...el.com>

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

Acked-by: Nicolas Ferre <nicolas.ferre@...el.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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