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

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Message-ID: <1e831d7c-cb38-4ac3-ba53-1fbb20423202@sirena.org.uk>
Date:   Thu, 15 Jun 2023 18:40:28 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Valentin CARON <valentin.caron@...s.st.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.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>,
        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 Thu, Jun 15, 2023 at 07:38:36PM +0200, Valentin CARON wrote:
> On 6/15/23 15:36, Krzysztof Kozlowski wrote:
> > On 15/06/2023 09:58, Valentin Caron wrote:

> > > 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.

That shouldn't be a restriction in the DT then, please send a patch
dropping this.

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