Re: [Freedreno] [PATCH v2 1/5] dt-bindings: display/msm: Add reg bus interconnect

2023-04-18 Thread Krzysztof Kozlowski 
On 18/04/2023 14:10, 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 

Acked-by: Krzysztof Kozlowski 

Best regards,
Krzysztof

[Freedreno] [PATCH v2 1/5] dt-bindings: display/msm: Add reg bus interconnect

2023-04-18 Thread Konrad Dybcio 
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:

-- 
2.40.0