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Thu, 15 Jun 2023 13:20:27 -0700 (PDT) Received: from [192.168.1.20] ([178.197.219.26]) by smtp.gmail.com with ESMTPSA id a9-20020a17090680c900b0096f782f727esm9989482ejx.140.2023.06.15.13.20.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Jun 2023 13:20:27 -0700 (PDT) Message-ID: Date: Thu, 15 Jun 2023 22:20:25 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: [PATCH v3 3/4] dt-bindings: spi: stm32: disable spi-slave property for stm32f4-f7 To: Valentin CARON , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alexandre Torgue , Alain Volmat Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20230615075815.310261-1-valentin.caron@foss.st.com> <20230615075815.310261-4-valentin.caron@foss.st.com> <479bf05e-342d-f94b-87f3-4cc0a95fb01a@linaro.org> Content-Language: en-US From: Krzysztof Kozlowski In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230615_132030_136462_2C3D7424 X-CRM114-Status: GOOD ( 12.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 15/06/2023 19:38, Valentin CARON wrote: > Hi Krzysztof, > > On 6/15/23 15:36, Krzysztof Kozlowski wrote: >> On 15/06/2023 09:58, Valentin Caron wrote: >>> From: Alain Volmat >>> >>> 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. > DT is independent of some chosen (or current) Linux drivers. Imagine Linux cannot support it but OpenBSD does. As Mark pointed out, this needs a follow up commit. Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel