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[88.156.142.67]) by smtp.gmail.com with ESMTPSA id i40-20020a0565123e2800b004b0b131453csm10724lfv.49.2022.12.22.01.24.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Dec 2022 01:24:28 -0800 (PST) From: Krzysztof Kozlowski To: Will Deacon , Robin Murphy , Joerg Roedel , Rob Herring , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski , Marijn Suijten , Dmitry Baryshkov , Konrad Dybcio Subject: [PATCH] dt-bindings: arm-smmu: disallow clocks when not used Date: Thu, 22 Dec 2022 10:23:55 +0100 Message-Id: <20221222092355.74586-1-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1752905683753154041?= X-GMAIL-MSGID: =?utf-8?q?1752905683753154041?= Disallow clocks for variants other than: 1. SMMUs with platform-specific compatibles which list explicit clocks and clock-names, 2. SMMUs using only generic compatibles, e.g. arm,mmu-500, which have a variable clocks on different implementations. This requires such variants with platform-specific compatible, to explicitly list the clocks or omit them, making the binding more constraint. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Marijn Suijten Acked-by: Rob Herring --- Cc: Marijn Suijten Cc: Dmitry Baryshkov Cc: Konrad Dybcio --- .../devicetree/bindings/iommu/arm,smmu.yaml | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml index 895ec8418465..0d88395e43ad 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml @@ -367,6 +367,34 @@ allOf: - description: interface clock required to access smmu's registers through the TCU's programming interface. + # Disallow clocks for all other platforms with specific compatibles + - if: + properties: + compatible: + contains: + enum: + - cavium,smmu-v2 + - marvell,ap806-smmu-500 + - nvidia,smmu-500 + - qcom,qcm2290-smmu-500 + - qcom,qdu1000-smmu-500 + - qcom,sc7180-smmu-500 + - qcom,sc8180x-smmu-500 + - qcom,sc8280xp-smmu-500 + - qcom,sdm670-smmu-500 + - qcom,sdm845-smmu-500 + - qcom,sdx55-smmu-500 + - qcom,sdx65-smmu-500 + - qcom,sm6115-smmu-500 + - qcom,sm6350-smmu-500 + - qcom,sm6375-smmu-500 + - qcom,sm8350-smmu-500 + - qcom,sm8450-smmu-500 + then: + properties: + clock-names: false + clocks: false + - if: properties: compatible: