linux-kernel - Re: [PATCH v3 3/4] dt-bindings: spi: stm32: disable spi-slave property for stm32f4-f7

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Message-ID: <b25d30de-8a22-b5ea-e58c-78b3d55b3cac@foss.st.com>
Date:   Thu, 15 Jun 2023 19:38:36 +0200
From:   Valentin CARON <valentin.caron@...s.st.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Alain Volmat <alain.volmat@...s.st.com>
CC:     <linux-spi@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 3/4] dt-bindings: spi: stm32: disable spi-slave
 property for stm32f4-f7

Hi Krzysztof,

On 6/15/23 15:36, Krzysztof Kozlowski wrote:
> On 15/06/2023 09:58, Valentin Caron wrote:
>> From: Alain Volmat <alain.volmat@...s.st.com>
>>
>> STM32F4 and STM32F7 can't switch to spi device mode.
>> Forbid this property with compatible "st,stm32f4-spi".
> Just to clarify - driver cannot switch or hardware does not support it?

Driver can't support it right now but hardware can.

> Please use subject prefixes matching the subsystem. You can get them for
> example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
> your patch is touching. (spi: dt-bindings:)
Sorry, I missed that.
> Best regards,
> Krzysztof

Regards,
Valentin