[PATCH v8 01/12] dt-bindings: display/msm: split qcom,mdss bindings

Dmitry Baryshkov
2022-09-24T12:36:18Z

Split Mobile Display SubSystem (MDSS) root node bindings to the separate
yaml file. Changes to the existing (txt) schema:
- Added optional "vbif_nrt_phys" region used by msm8996
- Made "bus" and "vsync" clocks optional (they are not used by some
platforms)
- Added optional resets property referencing MDSS reset
- Defined child nodes pointing to corresponding reference schema.
- Dropped the "lut" clock. It was added to the schema by mistake (it is
a part of mdp4 schema, not the mdss).

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
.../devicetree/bindings/display/msm/mdp5.txt | 30 +-
.../bindings/display/msm/qcom,mdss.yaml | 264 ++++++++++++++++++
2 files changed, 265 insertions(+), 29 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml

diff --git a/Documentation/devicetree/bindings/display/msm/mdp5.txt b/Documentation/devicetree/bindings/display/msm/mdp5.txt
index 43d11279c925..65d03c58dee6 100644
--- a/Documentation/devicetree/bindings/display/msm/mdp5.txt
+++ b/Documentation/devicetree/bindings/display/msm/mdp5.txt
@@ -2,37 +2,9 @@ Qualcomm adreno/snapdragon MDP5 display controller

Description:

-This is the bindings documentation for the Mobile Display Subsytem(MDSS) that
-encapsulates sub-blocks like MDP5, DSI, HDMI, eDP etc, and the MDP5 display
+This is the bindings documentation for the MDP5 display
controller found in SoCs like MSM8974, APQ8084, MSM8916, MSM8994 and MSM8996.

-MDSS:
-Required properties:
-- compatible:
- * "qcom,mdss" - MDSS
-- reg: Physical base address and length of the controller's registers.
-- reg-names: The names of register regions. The following regions are required:
- * "mdss_phys"
- * "vbif_phys"
-- interrupts: The interrupt signal from MDSS.
-- interrupt-controller: identifies the node as an interrupt controller.
-- #interrupt-cells: specifies the number of cells needed to encode an interrupt
- source, should be 1.
-- power-domains: a power domain consumer specifier according to
- Documentation/devicetree/bindings/power/power_domain.txt
-- clocks: device clocks. See ../clocks/clock-bindings.txt for details.
-- clock-names: the following clocks are required.
- * "iface"
- * "bus"
- * "vsync"
-- #address-cells: number of address cells for the MDSS children. Should be 1.
-- #size-cells: Should be 1.
-- ranges: parent bus address space is the same as the child bus address space.
-
-Optional properties:
-- clock-names: the following clocks are optional:
- * "lut"
-
MDP5:
Required properties:
- compatible:
diff --git a/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml
new file mode 100644
index 000000000000..92a1cbae6d76
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml
@@ -0,0 +1,264 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/msm/qcom,mdss.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Mobile Display SubSystem (MDSS)
+
+maintainers:
+ - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
+ - Rob Clark <robdclark@gmail.com>
+
+description:
+ This is the bindings documentation for the Mobile Display Subsytem(MDSS) that
+ encapsulates sub-blocks like MDP5, DSI, HDMI, eDP, etc.
+
+properties:
+ compatible:
+ enum:
+ - qcom,mdss
+
+ reg:
+ minItems: 2
+ maxItems: 3
+
+ reg-names:
+ minItems: 2
+ items:
+ - const: mdss_phys
+ - const: vbif_phys
+ - const: vbif_nrt_phys
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 1
+
+ power-domains:
+ maxItems: 1
+ description: |
+ The MDSS power domain provided by GCC
+
+ clocks:
+ minItems: 1
+ items:
+ - description: Display abh clock
+ - description: Display axi clock
+ - description: Display vsync clock
+
+ clock-names:
+ minItems: 1
+ items:
+ - const: iface
+ - const: bus
+ - const: vsync
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+ ranges: true
+
+ resets:
+ items:
+ - description: MDSS_CORE reset
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - interrupt-controller
+ - "#interrupt-cells"
+ - power-domains
+ - clocks
+ - clock-names
+ - "#address-cells"
+ - "#size-cells"
+ - ranges
+
+patternProperties:
+ "^mdp@[1-9a-f][0-9a-f]*$":
+ type: object
+ properties:
+ compatible:
+ const: qcom,mdp5
+
+ "^dsi@[1-9a-f][0-9a-f]*$":
+ type: object
+ properties:
+ compatible:
+ const: qcom,mdss-dsi-ctrl
+
+ "^phy@[1-9a-f][0-9a-f]*$":
+ type: object
+ properties:
+ compatible:
+ enum:
+ - qcom,dsi-phy-14nm
+ - qcom,dsi-phy-14nm-660
+ - qcom,dsi-phy-14nm-8953
+ - qcom,dsi-phy-20nm
+ - qcom,dsi-phy-28nm-hpm
+ - qcom,dsi-phy-28nm-lp
+
+ "^hdmi-phy@[1-9a-f][0-9a-f]*$":
+ type: object
+ properties:
+ compatible:
+ enum:
+ - qcom,hdmi-phy-8084
+ - qcom,hdmi-phy-8660
+ - qcom,hdmi-phy-8960
+ - qcom,hdmi-phy-8974
+ - qcom,hdmi-phy-8996
+
+ "^hdmi-tx@[1-9a-f][0-9a-f]*$":
+ type: object
+ properties:
+ compatible:
+ enum:
+ - qcom,hdmi-tx-8084
+ - qcom,hdmi-tx-8660
+ - qcom,hdmi-tx-8960
+ - qcom,hdmi-tx-8974
+ - qcom,hdmi-tx-8994
+ - qcom,hdmi-tx-8996
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,gcc-msm8916.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ mdss@1a00000 {
+ compatible = "qcom,mdss";
+ reg = <0x1a00000 0x1000>,
+ <0x1ac8000 0x3000>;
+ reg-names = "mdss_phys", "vbif_phys";
+
+ power-domains = <&gcc MDSS_GDSC>;
+
+ clocks = <&gcc GCC_MDSS_AHB_CLK>,
+ <&gcc GCC_MDSS_AXI_CLK>,
+ <&gcc GCC_MDSS_VSYNC_CLK>;
+ clock-names = "iface",
+ "bus",
+ "vsync";
+
+ interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ mdp@1a01000 {
+ compatible = "qcom,mdp5";
+ reg = <0x01a01000 0x89000>;
+ reg-names = "mdp_phys";
+
+ interrupt-parent = <&mdss>;
+ interrupts = <0>;
+
+ clocks = <&gcc GCC_MDSS_AHB_CLK>,
+ <&gcc GCC_MDSS_AXI_CLK>,
+ <&gcc GCC_MDSS_MDP_CLK>,
+ <&gcc GCC_MDSS_VSYNC_CLK>;
+ clock-names = "iface",
+ "bus",
+ "core",
+ "vsync";
+
+ iommus = <&apps_iommu 4>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ mdp5_intf1_out: endpoint {
+ remote-endpoint = <&dsi0_in>;
+ };
+ };
+ };
+ };
+
+ dsi@1a98000 {
+ compatible = "qcom,mdss-dsi-ctrl";
+ reg = <0x01a98000 0x25c>;
+ reg-names = "dsi_ctrl";
+
+ interrupt-parent = <&mdss>;
+ interrupts = <4>;
+
+ assigned-clocks = <&gcc BYTE0_CLK_SRC>,
+ <&gcc PCLK0_CLK_SRC>;
+ assigned-clock-parents = <&dsi_phy0 0>,
+ <&dsi_phy0 1>;
+
+ clocks = <&gcc GCC_MDSS_MDP_CLK>,
+ <&gcc GCC_MDSS_AHB_CLK>,
+ <&gcc GCC_MDSS_AXI_CLK>,
+ <&gcc GCC_MDSS_BYTE0_CLK>,
+ <&gcc GCC_MDSS_PCLK0_CLK>,
+ <&gcc GCC_MDSS_ESC0_CLK>;
+ clock-names = "mdp_core",
+ "iface",
+ "bus",
+ "byte",
+ "pixel",
+ "core";
+ phys = <&dsi_phy0>;
+ phy-names = "dsi-phy";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ dsi0_in: endpoint {
+ remote-endpoint = <&mdp5_intf1_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ dsi0_out: endpoint {
+ };
+ };
+ };
+ };
+
+ dsi_phy0: phy@1a98300 {
+ compatible = "qcom,dsi-phy-28nm-lp";
+ reg = <0x01a98300 0xd4>,
+ <0x01a98500 0x280>,
+ <0x01a98780 0x30>;
+ reg-names = "dsi_pll",
+ "dsi_phy",
+ "dsi_phy_regulator";
+
+ #clock-cells = <1>;
+ #phy-cells = <0>;
+
+ clocks = <&gcc GCC_MDSS_AHB_CLK>,
+ <&xo_board>;
+ clock-names = "iface", "ref";
+ vddio-supply = <&vreg_dsi_phy>;
+ };
+ };
+...
--
2.35.1