linux-kernel - Re: [PATCH 1/2] dt-bindings: display: panel: Add Visionox R66451 AMOLED DSI panel bindings

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Message-ID: <0d436948-b0b7-0727-0852-51f64aefa43f@linaro.org>
Date:   Mon, 22 May 2023 11:05:38 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Marijn Suijten <marijn.suijten@...ainline.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>
Cc:     Sam Ravnborg <sam@...nborg.org>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: display: panel: Add Visionox R66451
 AMOLED DSI panel bindings

On 21/05/2023 12:30, Marijn Suijten wrote:
> On 2023-05-16 13:20:30, Jessica Zhang wrote:
>> Document the 1080x2340 Visionox R66451 AMOLED DSI panel bindings
>>
>> Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
>> ---
>>   .../bindings/display/panel/visionox,r66451.yaml    | 59 ++++++++++++++++++++++
>>   1 file changed, 59 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml b/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml
>> new file mode 100644
>> index 000000000000..6ba323683921
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml
>> @@ -0,0 +1,59 @@
>> +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/display/panel/visionox,r66451.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Visionox R66451 AMOLED DSI Panel
>> +
>> +maintainers:
>> +  - Jessica Zhang <quic_jesszhan@...cinc.com>
>> +
>> +allOf:
>> +  - $ref: panel-common.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: visionox,r66451
>> +
>> +  reg:
>> +    maxItems: 1
>> +    description: DSI virtual channel
>> +
>> +  vddio-supply: true
>> +  vdd-supply: true
>> +  port: true
>> +  reset-gpios: true
> 
> Normally for cmd-mode panels there is also a `disp-te` pin which is
> optionally registered in dsi_host.c as GPIOD_IN, but on **ALL** my Sony
> phones this breaks vsync (as in: mdp5 stops receiving the interrupt, but
> we can see disp-te in /proc/interrupts then).

Describing it as a gpio is wrong, it should be described as a pinctrl state instead.

Neil

> 
> - Marijn
> 
>> +additionalProperties: false
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - vddio-supply
>> +  - vdd-supply
>> +  - reset-gpios
>> +  - port
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/gpio/gpio.h>
>> +    dsi {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +        panel@0 {
>> +            compatible = "visionox,r66451";
>> +            reg = <0>;
>> +            vddio-supply = <&vreg_l12c_1p8>;
>> +            vdd-supply = <&vreg_l13c_3p0>;
>> +
>> +            reset-gpios = <&tlmm 24 GPIO_ACTIVE_LOW>;
>> +
>> +            port {
>> +                panel0_in: endpoint {
>> +                    remote-endpoint = <&dsi0_out>;
>> +                };
>> +            };
>> +        };
>> +    };
>> +...
>>
>> -- 
>> 2.40.1
>>