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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/rockchip/rockchip,dw-hdmi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Rockchip DWC HDMI TX Encoder
maintainers:
- Mark Yao <markyao0591@gmail.com>
description: |
The HDMI transmitter is a Synopsys DesignWare HDMI 1.4 TX controller IP
with a companion PHY IP.
allOf:
- $ref: ../bridge/synopsys,dw-hdmi.yaml#
properties:
compatible:
enum:
- rockchip,rk3228-dw-hdmi
- rockchip,rk3288-dw-hdmi
- rockchip,rk3328-dw-hdmi
- rockchip,rk3399-dw-hdmi
reg-io-width:
const: 4
clocks:
minItems: 2
maxItems: 5
items:
- {}
- {}
# The next three clocks are all optional, but shall be specified in this
# order when present.
- description: The HDMI CEC controller main clock
- description: Power for GRF IO
- description: External clock for some HDMI PHY
clock-names:
minItems: 2
maxItems: 5
items:
- {}
- {}
- enum:
- cec
- grf
- vpll
- enum:
- grf
- vpll
- const: vpll
ddc-i2c-bus:
$ref: /schemas/types.yaml#/definitions/phandle
description:
The HDMI DDC bus can be connected to either a system I2C master or the
functionally-reduced I2C master contained in the DWC HDMI. When connected
to a system I2C master this property contains a phandle to that I2C
master controller.
phys:
maxItems: 1
description: The HDMI PHY
phy-names:
const: hdmi
pinctrl-names:
description:
The unwedge pinctrl entry shall drive the DDC SDA line low. This is
intended to work around a hardware errata that can cause the DDC I2C
bus to be wedged.
items:
- const: default
- const: unwedge
ports:
$ref: /schemas/graph.yaml#/properties/ports
properties:
port:
$ref: /schemas/graph.yaml#/$defs/port-base
unevaluatedProperties: false
description: Input of the DWC HDMI TX
properties:
endpoint@0:
$ref: /schemas/graph.yaml#/properties/endpoint
description: Connection to the VOPB
endpoint@1:
$ref: /schemas/graph.yaml#/properties/endpoint
description: Connection to the VOPL
required:
- endpoint@0
- endpoint@1
required:
- port
rockchip,grf:
$ref: /schemas/types.yaml#/definitions/phandle
description:
phandle to the GRF to mux vopl/vopb.
required:
- compatible
- reg
- reg-io-width
- clocks
- clock-names
- interrupts
- ports
- rockchip,grf
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/rk3288-cru.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
hdmi: hdmi@ff980000 {
compatible = "rockchip,rk3288-dw-hdmi";
reg = <0xff980000 0x20000>;
reg-io-width = <4>;
ddc-i2c-bus = <&i2c5>;
rockchip,grf = <&grf>;
interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>;
clock-names = "iahb", "isfr";
ports {
port {
#address-cells = <1>;
#size-cells = <0>;
hdmi_in_vopb: endpoint@0 {
reg = <0>;
remote-endpoint = <&vopb_out_hdmi>;
};
hdmi_in_vopl: endpoint@1 {
reg = <1>;
remote-endpoint = <&vopl_out_hdmi>;
};
};
};
};
...
|
