linux-kernel - Re: [PATCH] arm64: dts: imx8mq-librem5-devkit: switch to vqmmc-supply

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Date:   Mon, 31 Jul 2023 14:42:14 +0200
From:   Ahmad Fatoum <a.fatoum@...gutronix.de>
To:     Guido Günther <guido.gunther@...i.sm>,
        David Heidelberg <david@...t.cz>
Cc:     devicetree@...r.kernel.org, Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Fabio Estevam <festevam@...il.com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Peng Fan <peng.fan@....com>, linux-kernel@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, kernel@...i.sm
Subject: Re: [PATCH] arm64: dts: imx8mq-librem5-devkit: switch to vqmmc-supply

Hello David,
Hello Guido,

On 31.07.23 13:32, Guido Günther wrote:
> Hi,
> On Sun, Jul 30, 2023 at 03:10:46PM +0300, David Heidelberg wrote:
>> Resolves following warning:
>> arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dtb: mmc@...50000: Unevaluated properties are not allowed ('power-supply' was unexpected)
>> 	from schema $id: http://devicetree.org/schemas/mmc/fsl-imx-esdhc.yaml#
>>
>> Cc: kernel@...i.sm
>> Cc: Guido Günther <agx@...xcpu.org>
>> Signed-off-by: David Heidelberg <david@...t.cz>
>> ---
>>  arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
>> index b3549eae6278..a8b5da3ca08f 100644
>> --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
>> +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
>> @@ -1031,7 +1031,7 @@ &usdhc2 {
>>  	pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
>>  	bus-width = <4>;
>>  	vmmc-supply = <&reg_usdhc2_vmmc>;
>> -	power-supply = <&wifi_pwr_en>;
>> +	vqmmc-supply = <&wifi_pwr_en>;
> 
> From the schematics WIFI_PWR_EN connects to the Wifi card's `W_DISABLE`
> so I don't think vqmmc is correct here. I wonder if there's a better way
> to model that in DT? Any suggestions would be welcome.

I think mmc-pwrseq is what you are after.

Cheers,
Ahmad

> 
> Cheers,
>  -- Guido
> 
>>  	broken-cd;
>>  	disable-wp;
>>  	cap-sdio-irq;
>> -- 
>> 2.40.1
>>
> 
> 

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