Re: [Freedreno] [PATCH 1/5] dt-bindings: display/msm: Add reg bus interconnect

From: Dmitry Baryshkov
Date: Wed Apr 19 2023 - 20:26:13 EST


On 19/04/2023 23:05, Jeykumar Sankaran wrote:
Resending the question as the previous one was sent only to the freedreno list. Apologies for spamming!

On 4/17/2023 8:30 AM, Konrad Dybcio wrote:
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 <konrad.dybcio@xxxxxxxxxx>
---
  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
If posted already, please point to the DTSI patch for this ICC path.

Probably it's worth updating the example in one of mdss schemas.

    resets:
      items:


--
With best wishes
Dmitry