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 to allow using them in device trees and in the
driver.
Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
[Konrad: rework for one vs two MDP paths, update examples]
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlow...@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dyb...@linaro.org>
---
.../devicetree/bindings/display/msm/mdss-common.yaml | 18 ++++++++++++++----
.../bindings/display/msm/qcom,qcm2290-mdss.yaml | 14 ++++++++++----
.../bindings/display/msm/qcom,sc7180-mdss.yaml | 14 ++++++++++----
.../bindings/display/msm/qcom,sc7280-mdss.yaml | 14 ++++++++++----
.../bindings/display/msm/qcom,sm6115-mdss.yaml | 10 ++++++++++
.../bindings/display/msm/qcom,sm6125-mdss.yaml | 8 ++++++--
.../bindings/display/msm/qcom,sm6350-mdss.yaml | 8 ++++++--
.../bindings/display/msm/qcom,sm6375-mdss.yaml | 8 ++++++--
.../bindings/display/msm/qcom,sm8450-mdss.yaml | 13 ++++++++-----
9 files changed, 80 insertions(+), 27 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
index f69196e4cc76..c6305a6e0334 100644
--- a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
+++ b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
@@ -61,17 +61,27 @@ properties:
ranges: true
+ # This is not a perfect description, but it's impossible to discern and match
+ # the entries like we do with interconnect-names
interconnects:
minItems: 1
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
+ oneOf:
+ - minItems: 1
+ items:
+ - const: mdp0-mem
+ - const: cpu-cfg
+
+ - minItems: 2
+ items:
+ - const: mdp0-mem
+ - const: mdp1-mem
+ - const: cpu-cfg
resets:
items:
diff --git
a/Documentation/devicetree/bindings/display/msm/qcom,qcm2290-mdss.yaml
b/Documentation/devicetree/bindings/display/msm/qcom,qcm2290-mdss.yaml
index d71a8e09a798..f0cdb5422688 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,qcm2290-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,qcm2290-mdss.yaml
@@ -36,10 +36,14 @@ properties:
maxItems: 2
interconnects:
- maxItems: 1
+ items:
+ - description: Interconnect path from mdp0 port to the data bus
+ - description: Interconnect path from CPU to the reg bus
interconnect-names:
- maxItems: 1
+ items:
+ - const: mdp0-mem
+ - const: cpu-cfg
patternProperties:
"^display-controller@[0-9a-f]+$":
@@ -98,8 +102,10 @@ examples:
interrupt-controller;
#interrupt-cells = <1>;
- interconnects = <&mmrt_virt MASTER_MDP0 &bimc SLAVE_EBI1>;
- interconnect-names = "mdp0-mem";
+ interconnects = <&mmrt_virt MASTER_MDP0 &bimc SLAVE_EBI1>,
+ <&bimc MASTER_APPSS_PROC &config_noc
SLAVE_DISPLAY_CFG>;
+ interconnect-names = "mdp0-mem",
+ "cpu-cfg";
iommus = <&apps_smmu 0x420 0x2>,
<&apps_smmu 0x421 0x0>;
diff --git
a/Documentation/devicetree/bindings/display/msm/qcom,sc7180-mdss.yaml
b/Documentation/devicetree/bindings/display/msm/qcom,sc7180-mdss.yaml
index 3432a2407caa..7a0555b15ddf 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sc7180-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sc7180-mdss.yaml
@@ -36,10 +36,14 @@ properties:
maxItems: 1
interconnects:
- maxItems: 1
+ items:
+ - description: Interconnect path from mdp0 port to the data bus
+ - description: Interconnect path from CPU to the reg bus
interconnect-names:
- maxItems: 1
+ items:
+ - const: mdp0-mem
+ - const: cpu-cfg
patternProperties:
"^display-controller@[0-9a-f]+$":
@@ -106,8 +110,10 @@ examples:
interrupt-controller;
#interrupt-cells = <1>;
- interconnects = <&mmss_noc MASTER_MDP0 &mc_virt SLAVE_EBI1>;
- interconnect-names = "mdp0-mem";
+ interconnects = <&mmss_noc MASTER_MDP0 &mc_virt SLAVE_EBI1>,
+ <&gem_noc MASTER_APPSS_PROC &config_noc
SLAVE_DISPLAY_CFG>;
+ interconnect-names = "mdp0-mem",
+ "cpu-cfg";
iommus = <&apps_smmu 0x800 0x2>;
ranges;
diff --git
a/Documentation/devicetree/bindings/display/msm/qcom,sc7280-mdss.yaml
b/Documentation/devicetree/bindings/display/msm/qcom,sc7280-mdss.yaml
index bbb727831fca..2947f27e0585 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sc7280-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sc7280-mdss.yaml
@@ -36,10 +36,14 @@ properties:
maxItems: 1
interconnects:
- maxItems: 1
+ items:
+ - description: Interconnect path from mdp0 port to the data bus
+ - description: Interconnect path from CPU to the reg bus
interconnect-names:
- maxItems: 1
+ items:
+ - const: mdp0-mem
+ - const: cpu-cfg
patternProperties:
"^display-controller@[0-9a-f]+$":
@@ -118,8 +122,10 @@ examples:
interrupt-controller;
#interrupt-cells = <1>;
- interconnects = <&mmss_noc MASTER_MDP0 &mc_virt SLAVE_EBI1>;
- interconnect-names = "mdp0-mem";
+ interconnects = <&mmss_noc MASTER_MDP0 &mc_virt SLAVE_EBI1>,
+ <&gem_noc MASTER_APPSS_PROC &cnoc2 SLAVE_DISPLAY_CFG>;
+ interconnect-names = "mdp0-mem",
+ "cpu-cfg";
iommus = <&apps_smmu 0x900 0x402>;
ranges;
diff --git
a/Documentation/devicetree/bindings/display/msm/qcom,sm6115-mdss.yaml
b/Documentation/devicetree/bindings/display/msm/qcom,sm6115-mdss.yaml
index dde5c2acead5..309de1953c88 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm6115-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm6115-mdss.yaml
@@ -29,6 +29,16 @@ properties:
iommus:
maxItems: 2
+ interconnects:
+ items:
+ - description: Interconnect path from mdp0 port to the data bus
+ - description: Interconnect path from CPU to the reg bus
+
+ interconnect-names:
+ items:
+ - const: mdp0-mem
+ - const: cpu-cfg
+
patternProperties:
"^display-controller@[0-9a-f]+$":
type: object
diff --git
a/Documentation/devicetree/bindings/display/msm/qcom,sm6125-mdss.yaml
b/Documentation/devicetree/bindings/display/msm/qcom,sm6125-mdss.yaml
index 671c2c2aa896..3deb9dc81c9c 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm6125-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm6125-mdss.yaml
@@ -35,10 +35,14 @@ 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]+$":
diff --git
a/Documentation/devicetree/bindings/display/msm/qcom,sm6350-mdss.yaml
b/Documentation/devicetree/bindings/display/msm/qcom,sm6350-mdss.yaml
index e1dcb453762e..c9ba1fae8042 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm6350-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm6350-mdss.yaml
@@ -35,10 +35,14 @@ properties:
maxItems: 1
interconnects:
- maxItems: 2
+ items:
+ - description: Interconnect path from mdp0 port to the data bus
+ - description: Interconnect path from CPU to the reg bus
interconnect-names:
- maxItems: 2
+ items:
+ - const: mdp0-mem
+ - const: cpu-cfg
patternProperties:
"^display-controller@[0-9a-f]+$":
diff --git
a/Documentation/devicetree/bindings/display/msm/qcom,sm6375-mdss.yaml
b/Documentation/devicetree/bindings/display/msm/qcom,sm6375-mdss.yaml
index b15c3950f09d..8e8a288d318c 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm6375-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm6375-mdss.yaml
@@ -35,10 +35,14 @@ 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]+$":
diff --git
a/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
b/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
index 001b26e65301..747a2e9665f4 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
@@ -30,10 +30,10 @@ properties:
maxItems: 1
interconnects:
- maxItems: 2
+ maxItems: 3
interconnect-names:
- maxItems: 2
+ maxItems: 3
patternProperties:
"^display-controller@[0-9a-f]+$":
@@ -91,9 +91,12 @@ examples:
reg = <0x0ae00000 0x1000>;
reg-names = "mdss";
- interconnects = <&mmss_noc MASTER_MDP_DISP 0 &mc_virt SLAVE_EBI1_DISP
0>,
- <&mmss_noc MASTER_MDP_DISP 0 &mc_virt SLAVE_EBI1_DISP
0>;
- interconnect-names = "mdp0-mem", "mdp1-mem";
+ interconnects = <&mmss_noc MASTER_MDP_DISP &mc_virt SLAVE_EBI1_DISP>,
+ <&mmss_noc MASTER_MDP_DISP &mc_virt SLAVE_EBI1_DISP>,
+ <&gem_noc MASTER_APPSS_PROC &config_noc
SLAVE_DISPLAY_CFG>;
+ interconnect-names = "mdp0-mem",
+ "mdp1-mem",
+ "cpu-cfg";
resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
--
2.43.0
