[v5,1/4] dt-bindings: display: bridge: add sam9x75-mipi-dsi binding

Commit Message

Manikandan Muralidharan Nov. 6, 2024, 9:34 a.m. UTC

Add the 'sam9x75-mipi-dsi' compatible binding, which describes the
Microchip's specific wrapper for the Synopsys DesignWare MIPI DSI HOST
Controller for the sam9x75 series System-on-Chip (SoC) devices.

Signed-off-by: Manikandan Muralidharan <[e-mail]>
Reviewed-by: Conor Dooley <[e-mail]>
---
changes in v5:
- Add reviewed-by tag

changes in v4:
- Removed 'microchip,sfr' phandle property since
regmap to SFR node can be obtained using its compatible
string

changes in v3:
- Describe the clocks used

changes in v2:
- List the clocks with description
- remove describing 'remove-endpoint' properties
- remove unused label, node and fix example DT indentation
- cosmetic fixes
---
 .../bridge/microchip,sam9x75-mipi-dsi.yaml    | 109 ++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-mipi-dsi.yaml

Patch

diff --git a/Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-mipi-dsi.yaml b/Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-mipi-dsi.yaml
new file mode 100644
index 000000000000..d2ae6250e1f1
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-mipi-dsi.yaml
@@ -0,0 +1,109 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/microchip,sam9x75-mipi-dsi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip SAM9X75 MIPI DSI Controller
+
+maintainers:
+  - Manikandan Muralidharan <[e-mail]>
+
+description:
+  Microchip specific extensions or wrapper to the Synopsys Designware MIPI DSI.
+  The MIPI Display Serial Interface (DSI) Host Controller implements all
+  protocol functions defined in the MIPI DSI Specification.The DSI Host
+  provides an interface between the LCD Controller (LCDC) and the MIPI D-PHY,
+  allowing communication with a DSI-compliant display.
+
+allOf:
+  - $ref: /schemas/display/dsi-controller.yaml#
+
+properties:
+  compatible:
+    const: microchip,sam9x75-mipi-dsi
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description:
+          Peripheral Bus Clock between LCDC and MIPI DPHY
+      - description:
+          MIPI DPHY Interface reference clock for PLL block
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: refclk
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
+        description:
+          DSI Input port node, connected to the LCDC RGB output port.
+
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+      port@1:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
+        description:
+          DSI Output port node, connected to a panel or a bridge input port.
+
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - ports
+
+unevaluatedProperties: false
+
+examples:
+  - |
+     #include <dt-bindings/clock/at91.h>
+     #include <dt-bindings/gpio/gpio.h>
+
+     dsi@f8054000 {
+       compatible = "microchip,sam9x75-mipi-dsi";
+       reg = <0xf8054000 0x200>;
+       clocks = <&pmc PMC_TYPE_PERIPHERAL 54>, <&pmc PMC_TYPE_GCK 55>;
+       clock-names = "pclk", "refclk";
+
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       ports {
+         #address-cells = <1>;
+         #size-cells = <0>;
+
+         port@0 {
+           reg = <0>;
+           dsi_in: endpoint {
+             remote-endpoint = <&hlcdc_panel_output>;
+           };
+         };
+
+         port@1 {
+           reg = <1>;
+           dsi_out: endpoint {
+             remote-endpoint = <&mipi_in_panel>;
+           };
+         };
+       };
+     };
+...