linux-kernel - Re: [PATCH] ARM: dts: at91: sama5d2_ptc

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Message-ID: <8ff626a5-8f8a-1e75-ec3d-2a6004289747@microchip.com>
Date:   Fri, 7 Sep 2018 10:56:10 +0200
From:   Nicolas Ferre <nicolas.ferre@...rochip.com>
To:     Ludovic Desroches <ludovic.desroches@...rochip.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>
CC:     <alexandre.belloni@...tlin.com>, <robh+dt@...nel.org>,
        <mark.rutland@....com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: dts: at91: sama5d2_ptc_ek: fix nand pinctrl

On 07/09/2018 at 10:18, Ludovic Desroches wrote:
> The drive strength has to be set to medium otherwise some data
> corruption may happen.
> 
> Signed-off-by: Ludovic Desroches <ludovic.desroches@...rochip.com>

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

> ---
> 
> Hi,
> 
> This fix depends on the support of the drive-strength for the atmel pio4
> pinctroller. It has been added in v4.19 but I omitted to send it at the
> same time.

Could be good to be queued for "4.19-fixes".

Best regards,
   Nicolas

> Ludovic
> 
>   arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts b/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
> index b10dccd0958f..3b1baa8605a7 100644
> --- a/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
> +++ b/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
> @@ -11,6 +11,7 @@
>   #include "sama5d2-pinfunc.h"
>   #include <dt-bindings/mfd/atmel-flexcom.h>
>   #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/pinctrl/at91.h>
>   
>   / {
>   	model = "Atmel SAMA5D2 PTC EK";
> @@ -299,6 +300,7 @@
>   							 <PIN_PA30__NWE_NANDWE>,
>   							 <PIN_PB2__NRD_NANDOE>;
>   						bias-pull-up;
> +						atmel,drive-strength = <ATMEL_PIO_DRVSTR_ME>;
>   					};
>   
>   					ale_cle_rdy_cs {
> 


-- 
Nicolas Ferre