[PATCH v18 4/4] dt-bindings: msm/dp: Add bindings of MSM DisplayPort controller

Krishna Manikandan
2021-05-24T11:45:10Z

Add bindings for Snapdragon DisplayPort controller driver.

Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>
Signed-off-by: Vara Reddy <varar@codeaurora.org>
Signed-off-by: Tanmay Shah <tanmay@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
---
Changes in V2:
-Provide details about sel-gpio

Changes in V4:
-Provide details about max dp lanes
-Change the commit text

Changes in V5:
-moved dp.txt to yaml file

Changes in v6:
- Squash all AUX LUT properties into one pattern Property
- Make aux-cfg[0-9]-settings properties optional
- Remove PLL/PHY bindings from DP controller dts
- Add DP clocks description
- Remove _clk suffix from clock names
- Rename pixel clock to stream_pixel
- Remove redundant bindings (GPIO, PHY, HDCP clock, etc..)
- Fix indentation
- Add Display Port as interface of DPU in DPU bindings
and add port mapping accordingly.

Chages in v7:
- Add dp-controller.yaml file common between multiple SOC
- Rename dp-sc7180.yaml to dp-controller-sc7180.yaml
- change compatible string and add SOC name to it.
- Remove Root clock generator for pixel clock
- Add assigned-clocks and assigned-clock-parents bindings
- Remove redundant properties, descriptions and blank lines
- Add DP port in DPU bindings
- Update depends-on tag in commit message and rebase change accordingly

Changes in v8:
- Add MDSS AHB clock in bindings

Changes in v9:
- Remove redundant reg-name property
- Change assigned-clocks and assigned-clocks-parents counts to 2
- Use IRQ flags in example dts

Changes in v10:
- Change title of this patch as it does not contain PLL bindings anymore
- Remove redundant properties
- Remove use of IRQ flag
- Fix ports property

Changes in v11:
- add ports required of both #address-cells and #size-cells
- add required operating-points-v2
- add required #sound-dai-cells
- add required power-domains
- update maintainer list

Changes in v12:
- remove soc node from examples (Stephen Boyd)
- split dpu-sc7180.yaml changes to separate patch (Stephen Boyd)

Changes in v13:
- add assigned-clocks
- add assigned-clock-parents

Changes in v14:
- add reference for ports (Rob Herring)

Changes in v15:
- drop common properties from ports (Rob Herring)

.../bindings/display/msm/dp-controller.yaml | 146 +++++++++++++++++++++
1 file changed, 146 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/msm/dp-controller.yaml

diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
new file mode 100644
index 0000000..64d8d9e
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
@@ -0,0 +1,146 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/msm/dp-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MSM Display Port Controller
+
+maintainers:
+ - Kuogee Hsieh <khsieh@codeaurora.org>
+
+description: |
+ Device tree bindings for DisplayPort host controller for MSM targets
+ that are compatible with VESA DisplayPort interface specification.
+
+properties:
+ compatible:
+ enum:
+ - qcom,sc7180-dp
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: AHB clock to enable register access
+ - description: Display Port AUX clock
+ - description: Display Port Link clock
+ - description: Link interface clock between DP and PHY
+ - description: Display Port Pixel clock
+
+ clock-names:
+ items:
+ - const: core_iface
+ - const: core_aux
+ - const: ctrl_link
+ - const: ctrl_link_iface
+ - const: stream_pixel
+
+ assigned-clocks:
+ items:
+ - description: link clock source
+ - description: pixel clock source
+
+ assigned-clock-parents:
+ items:
+ - description: phy 0 parent
+ - description: phy 1 parent
+
+ phys:
+ maxItems: 1
+
+ phy-names:
+ items:
+ - const: dp
+
+ operating-points-v2:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ "#sound-dai-cells":
+ const: 0
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Input endpoint of the controller
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Output endpoint of the controller
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - phys
+ - phy-names
+ - "#sound-dai-cells"
+ - power-domains
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/qcom,dispcc-sc7180.h>
+ #include <dt-bindings/power/qcom-aoss-qmp.h>
+ #include <dt-bindings/power/qcom-rpmpd.h>
+
+ displayport-controller@ae90000 {
+ compatible = "qcom,sc7180-dp";
+ reg = <0xae90000 0x1400>;
+ interrupt-parent = <&mdss>;
+ interrupts = <12>;
+ clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
+ <&dispcc DISP_CC_MDSS_DP_AUX_CLK>,
+ <&dispcc DISP_CC_MDSS_DP_LINK_CLK>,
+ <&dispcc DISP_CC_MDSS_DP_LINK_INTF_CLK>,
+ <&dispcc DISP_CC_MDSS_DP_PIXEL_CLK>;
+ clock-names = "core_iface", "core_aux",
+ "ctrl_link",
+ "ctrl_link_iface", "stream_pixel";
+
+ assigned-clocks = <&dispcc DISP_CC_MDSS_DP_LINK_CLK_SRC>,
+ <&dispcc DISP_CC_MDSS_DP_PIXEL_CLK_SRC>;
+
+ assigned-clock-parents = <&dp_phy 0>, <&dp_phy 1>;
+
+ phys = <&dp_phy>;
+ phy-names = "dp";
+
+ #sound-dai-cells = <0>;
+
+ power-domains = <&rpmhpd SC7180_CX>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ endpoint {
+ remote-endpoint = <&dpu_intf0_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ endpoint {
+ remote-endpoint = <&typec>;
+ };
+ };
+ };
+ };
+...
--
2.7.4