linux-kernel - Re: [PATCH v2 3/3] Add vqmmc-supply on NanoPi NEO Plus2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240904162535.48640243@donnerap.manchester.arm.com>
Date: Wed, 4 Sep 2024 16:25:35 +0100
From: Andre Przywara <andre.przywara@....com>
To: Kryštof Černý <cleverline1mc@...il.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>, Jernej
 Skrabec <jernej.skrabec@...il.com>, Samuel Holland <samuel@...lland.org>,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] Add vqmmc-supply on NanoPi NEO Plus2

On Tue, 27 Aug 2024 23:00:45 +0200
Kryštof Černý <cleverline1mc@...il.com> wrote:

> Adds missing vqmmc-supply for mmc2.

Does that patch actually fix anything? Does the kernel complain about the
missing vqmmc regulator?
I am asking because I wonder if we need this patch in the first place. The
generic MMC DT binding marks the vqmmc property as optional.

So I appreciate the idea of making everything neat and tidy, but after all
we have little actual proof that the voltage is really 3.3V, so I'd just
leave it as it is.

Cheers,
Andre

> 
> Signed-off-by: Kryštof Černý <cleverline1mc@...il.com>
> ---
>  arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts
> index 526443bb736c..609560a9d6dc 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts
> @@ -157,6 +157,7 @@ &mmc2 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&mmc2_8bit_pins>;
>  	vmmc-supply = <&reg_vcc3v3>;
> +	vqmmc-supply = <&reg_vcc3v3>;
>  	bus-width = <8>;
>  	non-removable;
>  	cap-mmc-hw-reset;
>