linux-kernel - Re: [PATCH 10/13] dt-bindings: mfd: add vref

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Message-ID: <9fc27672-765b-9bd3-bb0a-d9159cb7d502@pengutronix.de>
Date:   Thu, 15 Apr 2021 12:51:23 +0200
From:   Ahmad Fatoum <a.fatoum@...gutronix.de>
To:     Alexandre Torgue <alexandre.torgue@...s.st.com>, arnd@...db.de,
        robh+dt@...nel.org, Marek Vasut <marex@...x.de>,
        jagan@...rulasolutions.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Marcin Sloniewski <marcin.sloniewski@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
        kuba@...nel.org
Subject: Re: [PATCH 10/13] dt-bindings: mfd: add vref_ddr-supply to st,stpmic1
 yaml

Hi,

On 15.04.21 12:10, Alexandre Torgue wrote:
> Add vref_ddr-supply to the STPMIC1 regulators supplies pattern
> list.
> 
> Signed-off-by: Alexandre Torgue <alexandre.torgue@...s.st.com>
> 
> diff --git a/Documentation/devicetree/bindings/mfd/st,stpmic1.yaml b/Documentation/devicetree/bindings/mfd/st,stpmic1.yaml
> index 305123e74a58..ffc32d209496 100644
> --- a/Documentation/devicetree/bindings/mfd/st,stpmic1.yaml
> +++ b/Documentation/devicetree/bindings/mfd/st,stpmic1.yaml
> @@ -184,7 +184,7 @@ properties:
>          additionalProperties: false
>  
>      patternProperties:
> -      "^(buck[1-4]|ldo[1-6]|boost|pwr_sw[1-2])-supply$":
> +      "^(buck[1-4]|ldo[1-6]|boost|vref_ddr|pwr_sw[1-2])-supply$":

IIRC, vref-ddr was a hack because a change in the regulator core broke
the STM32MP1 boards. I believe vref-ddr should be removed altogether
instead. It's supplied from BUCK2IN, which is already in the binding,
so it's redundant.

Cheers,
Ahmad

>          description: STPMIC1 voltage regulators supplies
>  
>        "^(buck[1-4]|ldo[1-6]|boost|vref_ddr|pwr_sw[1-2])$":
> 

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