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[83.9.30.99]) by smtp.gmail.com with ESMTPSA id b16-20020ac25e90000000b004ec8a3d4200sm2053439lfq.293.2023.04.17.08.30.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 08:30:24 -0700 (PDT) From: Konrad Dybcio Date: Mon, 17 Apr 2023 17:30:15 +0200 Subject: [PATCH 1/5] dt-bindings: display/msm: Add reg bus interconnect MIME-Version: 1.0 Message-Id: <20230417-topic-dpu_regbus-v1-1-06fbdc1643c0@linaro.org> References: <20230417-topic-dpu_regbus-v1-0-06fbdc1643c0@linaro.org> In-Reply-To: <20230417-topic-dpu_regbus-v1-0-06fbdc1643c0@linaro.org> To: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Krishna Manikandan Cc: Marijn Suijten , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1681745422; l=1021; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=DgEhAwck/2UMFZpU98hoIh71vdQR9UmmeTw0XAyM3ys=; b=ciJNKHjiF7ITdMqgyQfJ5T8aGhSzJ7QpX1an0grzifZiCGiobk7sJ7VxHrZq7Ks1lDIevGYZ2Ppn gZhM6RO4AVtKPj9aTKdLen85YbNGGGyEr8b2giju+qcxUh69exFG X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Apart from the already handled data bus (MAS_MDP_Pn<->DDR), there's another path that needs to be handled to ensure MDSS functions properly, namely the "reg bus", a.k.a the CPU-MDSS interconnect. Gating that path may have a variety of effects.. from none to otherwise inexplicable DSI timeouts.. Describe it in bindings to allow for use in device trees. Signed-off-by: Konrad Dybcio --- Documentation/devicetree/bindings/display/msm/mdss-common.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml index ccd7d6417523..9eb5b6d3e0b9 100644 --- a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml +++ b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml @@ -72,6 +72,7 @@ properties: items: - const: mdp0-mem - const: mdp1-mem + - const: cpu-cfg resets: items: