[PATCH 1/3] dt-binding: display: Add a device tree binding for the ITE IT61620 MIPI DSI to HDMI bridge

[Pet Weng]

This chip receives MIPI DSI input and outputs HDMI, and is commonly
connected to SoCs via I2C and DSI.

Signed-off-by: Pet Weng <pet.weng at ite.com.tw>
---
 .../bindings/display/bridge/ite,it61620.yaml       | 138 +++++++++++++++++++++
 1 file changed, 138 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it61620.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it61620.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..ff8ff390a1c0c31bb05ba0e237490cff2942cd05
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ite,it61620.yaml
@@ -0,0 +1,138 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/ite,it61620.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ITE IT61620 MIPI DSI to HDMI Bridge
+
+maintainers:
+  - Pet Weng <pet.weng at ite.com.tw>
+
+description: |
+  The ITE IT61620 is a high-performance, low-power HDMI bridge that converts
+  MIPI DSI input to HDMI 1.4b TMDS output. It supports up to 4 lanes of MIPI
+  D-PHY 2.0 input at 2.5Gbps per lane (10Gbps total), compatible with DSI-2 v2.0.
+
+  The HDMI transmitter side supports up to 4Kx2K at 30Hz resolutions, and is
+  compliant with HDMI 1.4b and HDCP 1.4.
+
+  For audio, the IT61620 supports up to 8-channel LPCM via I2S (multi-line or
+  TDM mode), with optional S/PDIF or DSD (for SACD). It supports audio
+  sampling rates up to 192kHz.
+
+allOf:
+  - $ref: /schemas/sound/dai-common.yaml#
+
+properties:
+  compatible:
+    const: ite,it61620
+
+  reg:
+    maxItems: 1
+
+  interrupts-extended:
+    maxItems: 1
+    description: interrupt specifier of INT pin
+
+  reset-gpios:
+    maxItems: 1
+    description: gpio specifier of RESET pin
+
+  ivdd-supply:
+    description: core voltage
+
+  ovdd-supply:
+    description: I/O voltage
+
+  ovdd1833-supply:
+    description: flexible I/O votage
+
+  pinctrl-names:
+    items:
+      - const: default
+
+  pinctrl-0:
+    maxItems: 1
+
+  "#sound-dai-cells":
+    const: 0
+
+  dsi-lanes:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Number of DSI input lanes used (1, 2 or 4)
+    minimum: 1
+    maximum: 4
+    default: 4
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port at 0:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        description: A port node pointing to DSI host port node
+
+      port at 1:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        description: Video port for HDMI output
+
+    required:
+      - port at 0
+      - port at 1
+
+required:
+  - compatible
+  - reg
+  - interrupts-extended
+  - reset-gpios
+  - ivdd-supply
+  - ovdd-supply
+  - ovdd1833-supply
+  - ports
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        hdmibrdg: ite61620 at 58 {
+                compatible = "ite,it61620";
+                reg = <0x58>;
+                #sound-dai-cells = <0>;
+                interrupts-extended = <&pio 128 IRQ_TYPE_LEVEL_LOW>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&it61620_pins>;
+                reset-gpios = <&pio 127 GPIO_ACTIVE_LOW>;
+                ivdd-supply = <&pp1000_hdmi_x>;
+                ovdd-supply = <&pp3300_vio28_x>;
+                ovdd1833-supply = <&pp1800_vcamio_x>;
+                dsi-lanes = <4>;
+                status = "okay";
+
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port at 0 {
+                                reg = <0>;
+                                it61620_dsi_in: endpoint {
+                                        remote-endpoint = <&dsi_out>;
+                                };
+                        };
+
+                        port at 1 {
+                                reg = <1>;
+                                it61620_hdmi_out: endpoint {
+                                        remote-endpoint = <&hdmi_connector_in>;
+                                };
+                        };
+                };
+        };
+    };

-- 
2.34.1