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[v4,1/4] dt-bindings: display: qcom,sm8550-mdss: explicitly document mdp0-mem and cpu-cfg interconnect paths

Message ID 20250213-topic-sm8x50-mdss-interconnect-bindings-fix-v4-1-3fa0bc42dd38@linaro.org
State New
Headers show
Series dt-bindings: display: qcom,sm8[56]50-mdss: properly document the interconnect paths | expand

Commit Message

Neil Armstrong Feb. 13, 2025, 4:27 p.m. UTC 
The mdp1-mem is not supported on the SM8550 SoCs, and having maxItems=2
makes the bindings not clear if mdp0-mem/mdp1-mem or mdp0-mem/cpu-cfg is
required, so explicitly document the mdp0-mem/cpu-cfg interconnect and
add the cpu-cfg path in the example.

Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 .../devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml  | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml
index 1ea50a2c7c8e9f420125ad30a80b4ebd05c9367a..59192c59ddb9c126ada43ada1430fa7569651f99 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml
@@ -30,10 +30,14 @@  properties:
     maxItems: 1
 
   interconnects:
-    maxItems: 2
+    items:
+      - description: Interconnect path from mdp0 port to the data bus
+      - description: Interconnect path from CPU to the reg bus
 
   interconnect-names:
-    maxItems: 2
+    items:
+      - const: mdp0-mem
+      - const: cpu-cfg
 
 patternProperties:
   "^display-controller@[0-9a-f]+$":
@@ -91,9 +95,9 @@  examples:
         reg = <0x0ae00000 0x1000>;
         reg-names = "mdss";
 
-        interconnects = <&mmss_noc MASTER_MDP 0 &gem_noc SLAVE_LLCC 0>,
-                        <&mc_virt MASTER_LLCC 0 &mc_virt SLAVE_EBI1 0>;
-        interconnect-names = "mdp0-mem", "mdp1-mem";
+        interconnects = <&mmss_noc MASTER_MDP 0 &mc_virt SLAVE_EBI1 0>,
+                        <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_DISPLAY_CFG 0>;
+        interconnect-names = "mdp0-mem", "cpu-cfg";
 
         resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;