linux-kernel - Re: [PATCH v1 1/2] dt-bindings: drm/bridge: anx7625: MIPI to DP transmitter binding

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Message-ID: <446ff66c-8097-fca8-8371-9223679f16bb@baylibre.com>
Date:   Thu, 19 Sep 2019 08:57:12 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Xin Ji <xji@...logixsemi.com>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Andrzej Hajda <a.hajda@...sung.com>
Cc:     Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sheng Pan <span@...logixsemi.com>
Subject: Re: [PATCH v1 1/2] dt-bindings: drm/bridge: anx7625: MIPI to DP
 transmitter binding

Hi,

On 19/09/2019 08:55, Xin Ji wrote:
> The ANX7625 is an ultra-low power 4K Mobile HD Transmitter designed
> for portable device. It converts MIPI to DisplayPort 1.3 4K.
> 
> You can add support to your board with binding.
> 
> Example:
> 	anx_bridge: anx7625@58 {
> 		compatible = "analogix,anx7625";
> 		reg = <0x58>;
> 		anx,low_power_mode = <1>;
> 		anx,dsi_supported = <1>;
> 		anx,dsi_channel = <1>;
> 		anx,dsi_lanes = <4>;
> 		anx,internal_pannel = <1>;
> 		anx,p-on-gpio = <&gpio0 45 GPIO_ACTIVE_LOW>;
> 		anx,reset-gpio = <&gpio0 73 GPIO_ACTIVE_LOW>;
> 		status = "okay";
> 		port {
> 			anx7625_1_in: endpoint {
> 				remote-endpoint = <&mipi_dsi_bridge_1>;
> 			};
> 		};
> 	};
> 
> Signed-off-by: Xin Ji <xji@...logixsemi.com>
> ---
>  .../devicetree/bindings/display/bridge/anx7625.txt | 42 ++++++++++++++++++++++
>  1 file changed, 42 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/anx7625.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/anx7625.txt b/Documentation/devicetree/bindings/display/bridge/anx7625.txt
> new file mode 100644
> index 0000000..f2a1c2a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/anx7625.txt
> @@ -0,0 +1,42 @@
> +Analogix ANX7625 SlimPort (4K Mobile HD Transmitter)
> +-----------------------------------------------

New bindings should use yaml format:
https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/example-schema.yaml

Neil

> +
> +The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
> +designed for portable devices.
> +
> +Required properties:
> +
> + - compatible		: "analogix,anx7625"
> + - reg			: I2C address of the device
> + - anx,low_power_mode	: Low power mode support feature
> + - anx,dsi_supported	: DSI or DPI
> + - anx,dsi_channel	: DSI channel index
> + - anx,dsi_lanes	: DSI lane count
> + - anx,intr-hpd-gpio	: Which GPIO to use for interrupt
> +
> +Optional properties:
> +
> + - anx,extcon_supported
> +	external connector interface support flag
> + - anx,internal_pannel
> +	Which indicate internal pannel
> + - anx,p-on-gpio
> +	Which GPIO to use for Power On chip
> + - anx,reset-gpio
> +	Which GPIO to use for RESET
> + - port
> +	SoC specific port nodes with endpoint definitions as defined in
> +	Documentation/devicetree/bindings/media/video-interfaces.txt,
> +
> +Example:
> +
> +	anx_bridge: anx7625@58 {
> +		compatible = "analogix,anx7625";
> +		reg = <0x58>;
> +		anx,low_power_mode = <0>;
> +		anx,dsi_supported = <1>;
> +		anx,dsi_channel = <1>;
> +		anx,dsi_lanes = <4>;
> +		anx,intr-hpd-gpio = <&gpio1 19 IRQ_TYPE_LEVEL_LOW>;
> +		status = "okay";
> +	};
>