[PATCH v3 1/4] dt-bindings: display: qcom,sm8550-mdss: explicitly document mdp0-mem and cpu-cfg interconnect paths

[Neil Armstrong <neil.armstrong@xxxxxxxxxx>]

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@xxxxxxxxxx>
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
 .../devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml  | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

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>;
 

-- 
2.34.1