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[83.9.29.144]) by smtp.gmail.com with ESMTPSA id q17-20020a19a411000000b004d86808fd33sm2365895lfc.15.2023.04.18.05.10.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Apr 2023 05:10:59 -0700 (PDT) From: Konrad Dybcio Date: Tue, 18 Apr 2023 14:10:56 +0200 Subject: [PATCH v2 1/5] dt-bindings: display/msm: Add reg bus interconnect MIME-Version: 1.0 Message-Id: <20230417-topic-dpu_regbus-v2-1-91a66d04898e@linaro.org> References: <20230417-topic-dpu_regbus-v2-0-91a66d04898e@linaro.org> In-Reply-To: <20230417-topic-dpu_regbus-v2-0-91a66d04898e@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=1681819856; l=1310; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=9eGzIhdzE/kh12Ssb8zLi8BB+5t4kj0lnuayorvjl54=; b=6fysWEnV+Y3QmSTMiVPNmoQ9u0QIAaEjvJEkX1mj0vdB2azvjMKBFTXFeb43KILmDBjB8FFs4iVp BB/S89PrA4Ytu9jBc2Dfi9OeeG/7wbARaGTUTtuRCJrQlU8X+ytt X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Precedence: bulk List-ID: X-Mailing-List: devicetree@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 | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml index ccd7d6417523..30a8aed4289a 100644 --- a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml +++ b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml @@ -66,12 +66,14 @@ properties: items: - description: Interconnect path from mdp0 (or a single mdp) port to the data bus - description: Interconnect path from mdp1 port to the data bus + - description: Interconnect path from CPU to the reg bus interconnect-names: minItems: 1 items: - const: mdp0-mem - const: mdp1-mem + - const: cpu-cfg resets: items: