linux-kernel - Re: [PATCH 03/10] dt-bindings: display: panel: Add Synaptics TD4328

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Date: Thu, 25 Apr 2024 11:11:34 -0500
From: Rob Herring <robh@...nel.org>
To: Xilin Wu <wuxilin123@...il.com>
Cc: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Junhao Xie <bigfoot@...ssfun.cn>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Jessica Zhang <quic_jesszhan@...cinc.com>,
	Sam Ravnborg <sam@...nborg.org>, David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Tengfei Fan <quic_tengfan@...cinc.com>,
	Molly Sophia <mollysophia379@...il.com>, linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 03/10] dt-bindings: display: panel: Add Synaptics TD4328

On Wed, Apr 24, 2024 at 11:29:08PM +0800, Xilin Wu wrote:
> Synaptics TD4328 is a display driver IC used to drive LCD DSI panels.
> 
> Signed-off-by: Xilin Wu <wuxilin123@...il.com>
> ---
>  .../bindings/display/panel/synaptics,td4328.yaml   | 69 ++++++++++++++++++++++
>  1 file changed, 69 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/synaptics,td4328.yaml b/Documentation/devicetree/bindings/display/panel/synaptics,td4328.yaml
> new file mode 100644
> index 000000000000..216f2fb22b88
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/synaptics,td4328.yaml
> @@ -0,0 +1,69 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/synaptics,td4328.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Synaptics TD4328-based DSI display panels
> +
> +maintainers:
> +  - Xilin Wu <wuxilin123@...il.com>
> +
> +description:
> +  The Synaptics TD4328 is a generic DSI Panel IC used to control
> +  LCD panels.
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    contains:
> +      const: syna,td4328

You need a compatible specific to a panel. This can be a fallback 
though.

> +
> +  vdd-supply:
> +    description: Digital voltage rail
> +
> +  vddio-supply:
> +    description: Digital I/O voltage rail
> +
> +  reg: true
> +  port: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - reset-gpios
> +  - vdd-supply
> +  - vddio-supply
> +  - port
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    dsi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        panel@0 {
> +            compatible = "syna,td4328";
> +            reg = <0>;
> +
> +            backlight = <&backlight>;
> +            reset-gpios = <&tlmm 133 GPIO_ACTIVE_LOW>;
> +
> +            vdd-supply = <&vdd_lcm_2p8>;
> +            vddio-supply = <&vreg_l12b_1p8>;
> +
> +            port {
> +                panel_in_0: endpoint {
> +                    remote-endpoint = <&dsi0_out>;
> +                };
> +            };
> +        };
> +    };
> +
> +...
> 
> -- 
> 2.44.0
>