linux-kernel - Re: [PATCH v3 01/14] arm64: dts: imx8mm-kontron: Add support for display bridges on BL i.MX8MM

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Date:   Wed, 6 Dec 2023 15:54:17 +0100
From:   Frieder Schrempf <frieder.schrempf@...tron.de>
To:     Fabio Estevam <festevam@...il.com>,
        Frieder Schrempf <frieder@...s.de>
Cc:     Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: Re: [PATCH v3 01/14] arm64: dts: imx8mm-kontron: Add support for
 display bridges on BL i.MX8MM

Hi Fabio,

On 06.12.23 15:47, Fabio Estevam wrote:
> Hi Frieder,
> 
> On Wed, Dec 6, 2023 at 11:44 AM Frieder Schrempf <frieder@...s.de> wrote:
> 
>> +               a2vdd-supply = <&reg_vdd_1v8>;
>> +               avdd-supply = <&reg_vdd_1v8>;
>> +               dvdd-supply = <&reg_vdd_1v8>;
>> +               pvdd-supply = <&reg_vdd_1v8>;
>> +               v1p2-supply = <&reg_vdd_1v8>;
> 
> Supplying 1.8V to v1p2-supply looks strange.

Indeed, but it's correct. From the binding docs:

  v1p2-supply:
    description:
      A supply that powers up the V1P2 pin. It can be either 1.2V
      or 1.8V for ADV7533 but only 1.8V for ADV7535.

Best regards
Frieder