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[178.235.179.97]) by smtp.gmail.com with ESMTPSA id ay22-20020a170906d29600b009efe6fdf615sm5241373ejb.150.2023.12.04.04.55.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Dec 2023 04:55:37 -0800 (PST) From: Konrad Dybcio Date: Mon, 04 Dec 2023 13:55:20 +0100 Subject: [PATCH v2 1/6] dt-bindings: arm-smmu: Document SM8[45]50 GPU SMMU MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20231127-topic-a7xx_dt-v2-1-2a437588e563@linaro.org> References: <20231127-topic-a7xx_dt-v2-0-2a437588e563@linaro.org> In-Reply-To: <20231127-topic-a7xx_dt-v2-0-2a437588e563@linaro.org> To: Will Deacon , Robin Murphy , Joerg Roedel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andy Gross , Bjorn Andersson Cc: Marijn Suijten , Neil Armstrong , Dmitry Baryshkov , linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Konrad Dybcio , Krzysztof Kozlowski X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1701694533; l=2754; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=1ykSmvOZZDjJjgZpitbyB4XwAgvbWrZhIXxM64S4nPE=; b=lj3IMiwPIJxgczSTOsCkVKkVF04JuQ2p6btaSUMQQGimuIK9Sqsb4x4moWx+oYn8OzCWFpfam br91WBeade2BjmO2oLO7ObprbqxSPbY8KcKz1j29Mnt3F70tYkAnC9D X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SM8450 and SM8550 both use a Qualcomm-modified MMU500 for their GPU. In both cases, it requires a set of clocks to be enabled. Describe that. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Konrad Dybcio --- .../devicetree/bindings/iommu/arm,smmu.yaml | 48 ++++++++++++++++++= +++- 1 file changed, 46 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Docume= ntation/devicetree/bindings/iommu/arm,smmu.yaml index aa9e1c0895a5..19dba93a7654 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml @@ -89,6 +89,8 @@ properties: - qcom,sm8150-smmu-500 - qcom,sm8250-smmu-500 - qcom,sm8350-smmu-500 + - qcom,sm8450-smmu-500 + - qcom,sm8550-smmu-500 - const: qcom,adreno-smmu - const: qcom,smmu-500 - const: arm,mmu-500 @@ -453,6 +455,50 @@ allOf: - description: Voter clock required for HLOS SMMU access - description: Interface clock required for register access =20 + - if: + properties: + compatible: + const: qcom,sm8450-smmu-500 + then: + properties: + clock-names: + items: + - const: gmu + - const: hub + - const: hlos + - const: bus + - const: iface + - const: ahb + + clocks: + items: + - description: GMU clock + - description: GPU HUB clock + - description: HLOS vote clock + - description: GPU memory bus clock + - description: GPU SNoC bus clock + - description: GPU AHB clock + + - if: + properties: + compatible: + const: qcom,sm8550-smmu-500 + then: + properties: + clock-names: + items: + - const: hlos + - const: bus + - const: iface + - const: ahb + + clocks: + items: + - description: HLOS vote clock + - description: GPU memory bus clock + - description: GPU SNoC bus clock + - description: GPU AHB clock + # Disallow clocks for all other platforms with specific compatibles - if: properties: @@ -473,8 +519,6 @@ allOf: - qcom,sm6350-smmu-500 - qcom,sm6375-smmu-500 - qcom,sm8350-smmu-500 - - qcom,sm8450-smmu-500 - - qcom,sm8550-smmu-500 then: properties: clock-names: false --=20 2.43.0