linux-kernel - Re: [PATCH] ARM: dts: at91: sama5d2_xplained: remove PA11__SDMMC0

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Message-ID: <28f0898c-0d6c-a77e-4068-b49c6dd0aa64@microchip.com>
Date:   Wed, 8 Dec 2021 12:22:01 +0100
From:   Nicolas Ferre <nicolas.ferre@...rochip.com>
To:     Eugen Hristev <eugen.hristev@...rochip.com>,
        <devicetree@...r.kernel.org>
CC:     <alexandre.belloni@...tlin.com>, <ludovic.desroches@...rochip.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        "Mihai Sain" <mihai.sain@...rochip.com>
Subject: Re: [PATCH] ARM: dts: at91: sama5d2_xplained: remove
 PA11__SDMMC0_VDDSEL from pinctrl

On 26/10/2021 at 15:20, Eugen Hristev wrote:
> From: Mihai Sain <mihai.sain@...rochip.com>
> 
> I/O voltage for eMMC is always 3.3V because PA11__SDMMC0_VDDSEL is
> tied with 10K resistor to GND. U13 switch S1 is always selected as
> voltage rail of 3.3V for VCCQ power pin from MPU controller and eMMC flash.
> Removing PA11 from pinctrl because it remains unused.
> 
> Signed-off-by: Mihai Sain <mihai.sain@...rochip.com>

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

Thanks, best regards,
   Nicolas

> ---
>   arch/arm/boot/dts/at91-sama5d2_xplained.dts | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> index b1e854f658de..9bf2ec0ba3e2 100644
> --- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> +++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> @@ -66,7 +66,7 @@ sdmmc0: sdio-host@...00000 {
>   			pinctrl-names = "default";
>   			pinctrl-0 = <&pinctrl_sdmmc0_default>;
>   			non-removable;
> -			mmc-ddr-1_8v;
> +			mmc-ddr-3_3v;
>   			status = "okay";
>   		};
>   
> @@ -619,10 +619,9 @@ cmd_data {
>   						bias-disable;
>   					};
>   
> -					ck_cd_rstn_vddsel {
> +					ck_cd_rstn {
>   						pinmux = <PIN_PA0__SDMMC0_CK>,
>   							 <PIN_PA10__SDMMC0_RSTN>,
> -							 <PIN_PA11__SDMMC0_VDDSEL>,
>   							 <PIN_PA13__SDMMC0_CD>;
>   						bias-disable;
>   					};
> 


-- 
Nicolas Ferre