[PATCH v2 1/6] dt-bindings: display: Add yamls for JH7110 display system

From: Keith Zhao
Date: Wed Oct 25 2023 - 06:41:05 EST

StarFive SoCs JH7110 display system:
lcd-controller bases verisilicon dc8200 IP,
and hdmi bases Innosilicon IP. Add bindings for them.

also update MAINTAINERS for dt-bindings

about this patch, I tested the dtbs_check and dt_binding_check
with the result pass.
Based on the feedback of the previous version, the corresponding arrangement is made

Signed-off-by: Keith Zhao <keith.zhao@xxxxxxxxxxxxxxxx>
---
.../starfive/starfive,display-subsystem.yaml | 41 +++++++
.../starfive/starfive,jh7110-dc8200.yaml | 109 ++++++++++++++++++
.../starfive/starfive,jh7110-inno-hdmi.yaml | 85 ++++++++++++++
MAINTAINERS | 7 ++
4 files changed, 242 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/starfive/starfive,display-subsystem.yaml
create mode 100644 Documentation/devicetree/bindings/display/starfive/starfive,jh7110-dc8200.yaml
create mode 100644 Documentation/devicetree/bindings/display/starfive/starfive,jh7110-inno-hdmi.yaml

diff --git a/Documentation/devicetree/bindings/display/starfive/starfive,display-subsystem.yaml b/Documentation/devicetree/bindings/display/starfive/starfive,display-subsystem.yaml
new file mode 100644
index 000000000..f45b97b08
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/starfive/starfive,display-subsystem.yaml
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/starfive/starfive,display-subsystem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Starfive DRM master device
+
+maintainers:
+ - Keith Zhao <keith.zhao@xxxxxxxxxxxxxxxx>
+ - ShengYang Chen <shengyang.chen@xxxxxxxxxxxxxxxx>
+
+description:
+ The Starfive DRM master device is a virtual device needed to list all
+ display controller or other display interface nodes that comprise the
+ graphics subsystem.
+
+properties:
+ compatible:
+ const: starfive,display-subsystem
+
+ ports:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description:
+ Should contain a list of phandles pointing to display interface ports
+ of display controller devices. Display controller definitions as defined
+ in Documentation/devicetree/bindings/display/starfive/
+ starfive,jh7110-dc8200.yaml
+
+required:
+ - compatible
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ display-subsystem {
+ compatible = "starfive,display-subsystem";
+ ports = <&dc_out>;
+ };
diff --git a/Documentation/devicetree/bindings/display/starfive/starfive,jh7110-dc8200.yaml b/Documentation/devicetree/bindings/display/starfive/starfive,jh7110-dc8200.yaml
new file mode 100644
index 000000000..87051cddf
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/starfive/starfive,jh7110-dc8200.yaml
@@ -0,0 +1,109 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/starfive/starfive,jh7110-dc8200.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive display controller
+
+description:
+ The StarFive SoC uses the display controller based on Verisilicon IP
+ to transfer the image data from a video memory buffer to an external
+ LCD interface.
+
+maintainers:
+ - Keith Zhao <keith.zhao@xxxxxxxxxxxxxxxx>
+
+properties:
+ compatible:
+ const: starfive,jh7110-dc8200
+
+ reg:
+ minItems: 1
+ items:
+ - description:
+ host interface
+ - description:
+ display physical base address and length.
+
+ interrupts:
+ items:
+ - description: The interrupt will be generated when DC finish one frame
+
+ clocks:
+ items:
+ - description: Clock for display system noc bus.
+ - description: Pixel clock for display channel 0.
+ - description: Pixel clock for display channel 1.
+ - description: Core clock for display controller.
+ - description: Clock for axi bus to access ddr.
+ - description: Clock for ahb bus to R/W the phy regs.
+ - description: External HDMI pixel clock.
+ - description: Parent clock for pixel clock
+
+ clock-names:
+ items:
+ - const: noc_bus
+ - const: channel0
+ - const: channel1
+ - const: dc_core
+ - const: axi_core
+ - const: ahb
+ - const: hdmi_tx
+ - const: dc_parent
+
+ resets:
+ items:
+ - description: Reset for axi bus.
+ - description: Reset for ahb bus.
+ - description: Core reset of display controller.
+
+ reset-names:
+ items:
+ - const: axi
+ - const: ahb
+ - const: core
+
+ port:
+ $ref: /schemas/graph.yaml#/properties/port
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - resets
+ - reset-names
+ - port
+
+additionalProperties: false
+
+examples:
+ - |
+ dc8200: lcd-controller@29400000 {
+ compatible = "starfive,jh7110-dc8200";
+ reg = <0x29400000 0x100>, <0x29400800 0x2000>;
+ interrupts = <95>;
+ clocks = <&syscrg 60>,
+ <&voutcrg 7>,
+ <&voutcrg 8>,
+ <&voutcrg 4>,
+ <&voutcrg 5>,
+ <&voutcrg 6>,
+ <&hdmitx0_pixelclk>,
+ <&voutcrg 1>;
+ clock-names = "noc_bus", "channel0", "channel1",
+ "dc_core", "axi_core", "ahb",
+ "hdmi_tx","dc_parent";
+ resets = <&voutcrg 0>, <&voutcrg 1>, <&voutcrg 2>;
+ reset-names = "axi", "ahb", "core";
+ dc_out: port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ dc_out_hdmi: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&hdmi_in_dc>;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/display/starfive/starfive,jh7110-inno-hdmi.yaml b/Documentation/devicetree/bindings/display/starfive/starfive,jh7110-inno-hdmi.yaml
new file mode 100644
index 000000000..f6c473a10
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/starfive/starfive,jh7110-inno-hdmi.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/starfive/starfive,jh7110-inno-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Starfive JH7110 HDMI controller
+
+description:
+ The StarFive JH7110 SoC uses the HDMI signal transmiter based on innosilicon IP
+ to generate HDMI signal from its input and transmit the signal to the screen.
+
+maintainers:
+ - Keith Zhao <keith.zhao@xxxxxxxxxxxxxxxx>
+
+properties:
+ compatible:
+ const: "starfive,jh7110-inno-hdmi"
+
+ reg:
+ minItems: 1
+
+ interrupts:
+ items:
+ - description: The HDMI hot plug detection interrupt.
+
+ clocks:
+ items:
+ - description: System clock of HDMI module.
+ - description: Mclk clock of HDMI audio.
+ - description: Bclk clock of HDMI audio.
+ - description: Pixel clock generated by HDMI module.
+
+ clock-names:
+ items:
+ - const: sysclk
+ - const: mclk
+ - const: bclk
+ - const: pclk
+
+ resets:
+ maxItems: 1
+
+ '#sound-dai-cells':
+ const: 0
+
+ port:
+ $ref: /schemas/graph.yaml#/properties/port
+ description:
+ Should contain a remote endpoint phandle of display controller device.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - resets
+ - '#sound-dai-cells'
+ - port
+
+additionalProperties: false
+
+examples:
+ - |
+ hdmi: hdmi@29590000 {
+ compatible = "starfive,jh7110-inno-hdmi";
+ reg = <0x29590000 0x4000>;
+ interrupts = <99>;
+ clocks = <&voutcrg 17>,
+ <&voutcrg 15>,
+ <&voutcrg 16>,
+ <&hdmitx0_pixelclk>;
+ clock-names = "sysclk", "mclk","bclk","pclk";
+ resets = <&voutcrg 9>;
+ #sound-dai-cells = <0>;
+ hdmi_in: port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ hdmi_in_dc: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&dc_out_hdmi>;
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 3be1bdfe8..46e51bca5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6751,6 +6751,13 @@ T: git git://anongit.freedesktop.org/drm/drm-misc
F: Documentation/devicetree/bindings/display/panel/tpo,tpg110.yaml
F: drivers/gpu/drm/panel/panel-tpo-tpg110.c

+DRM DRIVERS FOR STARFIVE
+M: Keith Zhao <keith.zhao@xxxxxxxxxxxxxxxx>
+L: dri-devel@xxxxxxxxxxxxxxxxxxxxx
+S: Maintained
+T: git git://anongit.freedesktop.org/drm/drm-misc
+F: Documentation/devicetree/bindings/display/starfive/
+
DRM DRIVER FOR USB DISPLAYLINK VIDEO ADAPTERS
M: Dave Airlie <airlied@xxxxxxxxxx>
R: Sean Paul <sean@xxxxxxxxxx>
--
2.34.1