[PATCH 1/2] dt-binding: Add DSI/LVDS tc358775 bridge bindings

Laurent Pinchart laurent.pinchart at ideasonboard.com
Thu Mar 12 14:33:07 UTC 2020


Hello Vinay,

Please take into account the review comments from v1. We can discuss
them in replies to v1 if you have any question. I'll skip reviewing this
version.

On Wed, Mar 11, 2020 at 03:18:24PM +0530, Vinay Simha BN wrote:
> Add yaml documentation for DSI/LVDS tc358775 bridge
> 
> Signed-off-by: Vinay Simha BN <simhavcs at gmail.com>
> 
> ---
> v1:
>  Initial version
> ---
>  .../bindings/display/bridge/toshiba-tc358775.yaml  | 174 +++++++++++++++++++++
>  1 file changed, 174 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/toshiba-tc358775.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/toshiba-tc358775.yaml b/Documentation/devicetree/bindings/display/bridge/toshiba-tc358775.yaml
> new file mode 100644
> index 0000000..e9a9544
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/toshiba-tc358775.yaml
> @@ -0,0 +1,174 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/toshiba-tc358775.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +
> +title: Toshiba TC358775 DSI to LVDS bridge bindings
> +
> +maintainers:
> +	- Vinay Simha BN <simhavcs at gmail.com>
> +
> +description: |
> +	This binding supports DSI to LVDS bridge TC358775
> +
> +properties:
> + compatible:
> +	const: toshiba,tc358775
> +
> + reg:
> +   maxItems: 1
> +   description: i2c address of the bridge, 0x0f
> +
> + tc, dsi-lanes: 1
> +   maxItems: 1
> +   description: Number of DSI data lanes connected to the DSI host. It should
> +  be one of 1, 2, 3 or 4.
> +
> + tc, dual-link: 1
> +   maxItems: 1
> +   description: To configure the LVDS transmitter either as single-link or dual-link.
> +
> + vdd-supply:
> +   maxItems: 1
> +   description:  1.2V LVDS Power Supply
> +
> + vddio-supply:
> +   maxItems: 1
> +   description: 1.8V IO Power Supply
> +
> + stby-gpios:
> +   maxItems: 1
> +   description: Standby pin, Low active
> +
> + reset-gpios:
> +   maxItems: 1
> +   description: Hardware reset, Low active
> +
> + ports:
> +   type: object
> +
> +    properties:
> +      port at 0:
> +        type: object
> +        description: |
> +          DSI Input. The remote endpoint phandle should be a
> +	  reference to a valid mipi_dsi_host device node.
> +      port at 1:
> +        type: object
> +        description: |
> +          Video port for LVDS output (panel or connector).
> +
> +      required:
> +      - port at 0
> +      - port at 1
> +
> +required:
> + - compatible
> + - reg
> + - dsi-lanes
> + - vdd-supply
> + - vddio-supply
> + - stby-gpios
> + - reset-gpios
> + - ports
> +
> +examples:
> + - |
> +   i2c at 78b8000 {
> +	/* On High speed expansion */
> +	label = "HS-I2C2";
> +	status = "okay";
> +
> +	tc_bridge: bridge at f {
> +		status = "okay";
> +
> +		compatible = "toshiba,tc358775";
> +		reg = <0x0f>;
> +
> +		tc,dsi-lanes = <4>;
> +		tc,dual-link = <0>;
> +
> +		vdd-supply = <&pm8916_l2>;
> +		vddio-supply = <&pm8916_l6>;
> +
> +		stby-gpio = <&msmgpio 99 GPIO_ACTIVE_LOW>;
> +		reset-gpio = <&msmgpio 72 GPIO_ACTIVE_LOW>;
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			port at 0 {
> +				reg = <0>;
> +				d2l_in: endpoint {
> +					remote-endpoint = <&dsi0_out>;
> +				};
> +			};
> +
> +			port at 1 {
> +				reg = <1>;
> +				d2l_out: endpoint {
> +					remote-endpoint = <&panel_in>;
> +				};
> +			};
> +		};
> +	};
> +  };
> +
> +  panel: auo,b101xtn01 {
> +		status = "okay";
> +		compatible = "auo,b101xtn01", "panel-lvds";
> +		power-supply = <&pm8916_l14>;
> +
> +		width-mm = <223>;
> +		height-mm = <125>;
> +
> +		data-mapping = "jeida-24";
> +
> +		panel-timing {
> +			/* 1366x768 @60Hz */
> +			clock-frequency = <72000000>;
> +			hactive = <1366>;
> +			vactive = <768>;
> +			hsync-len = <70>;
> +			hfront-porch = <20>;
> +			hback-porch = <0>;
> +			vsync-len = <42>;
> +			vfront-porch = <14>;
> +			vback-porch = <0>;
> +		};
> +
> +		port {
> +			panel_in: endpoint {
> +				remote-endpoint = <&d2l_out>;
> +			};
> +		};
> + };
> +
> +  mdss at 1a00000 {
> +	status = "okay";
> +
> +	mdp at 1a01000 {
> +		status = "okay";
> +	};
> +
> +	dsi at 1a98000 {
> +		status = "okay";
> +		..
> +		ports {
> +			port at 1 {
> +				dsi0_out: endpoint {
> +					remote-endpoint = <&d2l_in>;
> +					data-lanes = <0 1 2 3>;
> +				};
> +			};
> +		};
> +	};
> +
> +	dsi-phy at 1a98300 {
> +		status = "okay";
> +		..
> +	};
> + };

-- 
Regards,

Laurent Pinchart


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