Hi,
On 28/09/2023 13:35, Dmitry Baryshkov wrote:
From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Apart from the already handled data bus (MAS_MDP_Pn<->DDR), there are
other connection paths:
- a path that connects rotator block to the DDR.
- a path that needs to be handled to ensure MDSS register access
functions properly, namely the "reg bus", a.k.a the CPU-MDSS CFG
interconnect.
Describe these paths bindings to allow using them in device trees and in
the driver
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
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 f69196e4cc76..6b4ce08a60dc 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:
This is not enough, on sm8450 this still appears with patch applied:
arch/arm64/boot/dts/qcom/sm8450-hdk.dtb: display-subsystem@ae00000: interconnects: [[182, 14, 0, 30, 3, 0], [182, 14, 0, 30, 3, 0], [53, 2, 3, 183, 14, 3]] is too long
from schema $id: http://devicetree.org/schemas/display/msm/qcom,sm8450-mdss.yaml#
arch/arm64/boot/dts/qcom/sm8450-hdk.dtb: display-subsystem@ae00000: interconnect-names: ['mdp0-mem', 'mdp1-mem', 'cpu-cfg'] is too long
from schema $id: http://devicetree.org/schemas/display/msm/qcom,sm8450-mdss.yaml#
This is also needed:
==========><================================
diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
index 001b26e65301..e94e8630cc85 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
@@ -30,10 +30,10 @@ properties:
maxItems: 1
interconnects:
- maxItems: 2
+ maxItems: 3
interconnect-names:
- maxItems: 2
+ maxItems: 3
patternProperties:
"^display-controller@[0-9a-f]+$":
==============================================
Thanks,
Neil
