[PATCH v4 1/3] dt-bindings: display: bridge: add it66121 bindings

From: Neil Armstrong
Date: Mon Apr 19 2021 - 03:12:32 EST


From: Phong LE <ple@xxxxxxxxxxxx>

Add the ITE bridge HDMI it66121 bindings.

Signed-off-by: Phong LE <ple@xxxxxxxxxxxx>
Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
.../bindings/display/bridge/ite,it66121.yaml | 124 ++++++++++++++++++
1 file changed, 124 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml
new file mode 100644
index 000000000000..6ec1d5fbb8bc
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml
@@ -0,0 +1,124 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/ite,it66121.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ITE it66121 HDMI bridge Device Tree Bindings
+
+maintainers:
+ - Phong LE <ple@xxxxxxxxxxxx>
+ - Neil Armstrong <narmstrong@xxxxxxxxxxxx>
+
+description: |
+ The IT66121 is a high-performance and low-power single channel HDMI
+ transmitter, fully compliant with HDMI 1.3a, HDCP 1.2 and backward compatible
+ to DVI 1.0 specifications.
+
+properties:
+ compatible:
+ const: ite,it66121
+
+ reg:
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+ description: GPIO connected to active low reset
+
+ vrf12-supply:
+ description: Regulator for 1.2V analog core power.
+
+ vcn33-supply:
+ description: Regulator for 3.3V digital core power.
+
+ vcn18-supply:
+ description: Regulator for 1.8V IO core power.
+
+ interrupts:
+ maxItems: 1
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: DPI input port.
+
+ properties:
+ endpoint:
+ $ref: /schemas/graph.yaml#/$defs/endpoint-base
+ unevaluatedProperties: false
+
+ properties:
+ bus-width:
+ description:
+ Endpoint bus width.
+ enum:
+ - 12 # 12 data lines connected and dual-edge mode
+ - 24 # 24 data lines connected and single-edge mode
+ default: 24
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: HDMI Connector port.
+
+ required:
+ - port@0
+ - port@1
+
+required:
+ - compatible
+ - reg
+ - reset-gpios
+ - vrf12-supply
+ - vcn33-supply
+ - vcn18-supply
+ - interrupts
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ it66121hdmitx: hdmitx@4c {
+ compatible = "ite,it66121";
+ pinctrl-names = "default";
+ pinctrl-0 = <&ite_pins_default>;
+ vcn33-supply = <&mt6358_vcn33_wifi_reg>;
+ vcn18-supply = <&mt6358_vcn18_reg>;
+ vrf12-supply = <&mt6358_vrf12_reg>;
+ reset-gpios = <&pio 160 GPIO_ACTIVE_LOW>;
+ interrupt-parent = <&pio>;
+ interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
+ reg = <0x4c>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ it66121_in: endpoint {
+ bus-width = <12>;
+ remote-endpoint = <&display_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ hdmi_conn_out: endpoint {
+ remote-endpoint = <&hdmi_conn_in>;
+ };
+ };
+ };
+ };
+ };
--
2.25.1