On Tue, Jan 05, 2021 at 08:08:16AM +0200, Laurent Pinchart wrote:
> Convert the Rockchip HDMI TX text binding to YAML.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> ---
> Changes since v2:
>
> - Use Mark's @gmail.com e-mail address as the @rock-chips.com address
> bounces
>
> Changes since v1:
>
> - Drop pinctrl-0 and pinctrl-1
> - Use unevaluatedProperties instead of additionalProperties
> - Drop reg and interrupts as they're checked in the base schema
> - Rebase on top of OF graph schema, dropped redundant properties
> - Fix identation for enum entries
> - Tidy up clock names
> ---
> .../display/rockchip/dw_hdmi-rockchip.txt | 74 --------
> .../display/rockchip/rockchip,dw-hdmi.yaml | 158 ++++++++++++++++++
> 2 files changed, 158 insertions(+), 74 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
> create mode 100644 Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
> deleted file mode 100644
> index 3d32ce137e7f..000000000000
> --- a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
> +++ /dev/null
> @@ -1,74 +0,0 @@
> -Rockchip DWC HDMI TX Encoder
> -============================
> -
> -The HDMI transmitter is a Synopsys DesignWare HDMI 1.4 TX controller IP
> -with a companion PHY IP.
> -
> -These DT bindings follow the Synopsys DWC HDMI TX bindings defined in
> -Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt with the
> -following device-specific properties.
> -
> -
> -Required properties:
> -
> -- compatible: should be one of the following:
> - "rockchip,rk3228-dw-hdmi"
> - "rockchip,rk3288-dw-hdmi"
> - "rockchip,rk3328-dw-hdmi"
> - "rockchip,rk3399-dw-hdmi"
> -- reg: See dw_hdmi.txt.
> -- reg-io-width: See dw_hdmi.txt. Shall be 4.
> -- interrupts: HDMI interrupt number
> -- clocks: See dw_hdmi.txt.
> -- clock-names: Shall contain "iahb" and "isfr" as defined in dw_hdmi.txt.
> -- ports: See dw_hdmi.txt. The DWC HDMI shall have a single port numbered 0
> - corresponding to the video input of the controller. The port shall have two
> - endpoints, numbered 0 and 1, connected respectively to the vopb and vopl.
> -- rockchip,grf: Shall reference the GRF to mux vopl/vopb.
> -
> -Optional properties
> -
> -- ddc-i2c-bus: 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.
> -- clock-names: See dw_hdmi.txt. The "cec" clock is optional.
> -- clock-names: May contain "cec" as defined in dw_hdmi.txt.
> -- clock-names: May contain "grf", power for grf io.
> -- clock-names: May contain "vpll", external clock for some hdmi phy.
> -- phys: from general PHY binding: the phandle for the PHY device.
> -- phy-names: Should be "hdmi" if phys references an external phy.
> -
> -Optional pinctrl entry:
> -- If you have both a "unwedge" and "default" pinctrl entry, dw_hdmi
> - will switch to the unwedge pinctrl state for 10ms if it ever gets an
> - i2c timeout. It's intended that this unwedge pinctrl entry will
> - cause the SDA line to be driven low to work around a hardware
> - errata.
> -
> -Example:
> -
> -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 {
> - hdmi_in: 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>;
> - };
> - };
> - };
> -};
> diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
> new file mode 100644
> index 000000000000..d3b2f87f152a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
> @@ -0,0 +1,158 @@
> +# 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@xxxxxxxxx>
> +
> +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
In this case, this is correct since you have endpoint definitions.
> + unevaluatedProperties: false
> + description: Input of the DWC HDMI TX
> +
> + properties:
> + endpoint@0:
> + $ref: /schemas/graph.yaml#/$defs/endpoint-base
#/properties/endpoint
> + unevaluatedProperties: false
> + description: Connection to the VOPB
Oh good, we've done muxing both ways...
> +
> + endpoint@1:
> + $ref: /schemas/graph.yaml#/$defs/endpoint-base
> + unevaluatedProperties: false
> + 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>;
> + };
> + };
> + };
> + };
> +
> +...
> --
> Regards,
>
> Laurent Pinchart
>
