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

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Message-ID: <479bf05e-342d-f94b-87f3-4cc0a95fb01a@linaro.org>
Date:   Thu, 15 Jun 2023 15:36:16 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Valentin Caron <valentin.caron@...s.st.com>,
        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

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?

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:)

Best regards,
Krzysztof