linux-kernel - Re: [PATCH v5 3/4] dt-bindings: Add binding for IT6505.

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Message-ID: <20191214082145.GD22818@ravnborg.org>
Date:   Sat, 14 Dec 2019 09:21:45 +0100
From:   Sam Ravnborg <sam@...nborg.org>
To:     allen <allen.chen@....com.tw>
Cc:     Mark Rutland <mark.rutland@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Pi-Hsun Shih <pihsun@...omium.org>,
        Jau-Chih Tseng <Jau-Chih.Tseng@....com.tw>,
        David Airlie <airlied@...ux.ie>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v5 3/4] dt-bindings: Add binding for IT6505.

Hi Allen.

On Tue, Dec 10, 2019 at 01:53:41PM +0800, allen wrote:
> Add a DT binding documentation for IT6505.
> 
> Signed-off-by: Allen Chen <allen.chen@....com.tw>
> Signed-off-by: Pi-Hsun Shih <pihsun@...omium.org>
> ---
>  .../bindings/display/bridge/ite,it6505.yaml        | 99 ++++++++++++++++++++++
>  1 file changed, 99 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
> new file mode 100644
> index 00000000..23a106a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
> @@ -0,0 +1,99 @@
> +# SPDX-License-Identifier: GPL-2.0
Please dual license new bindings like this:

(GPL-2.0-only OR BSD-2-Clause)


> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/ite,it6505.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ITE it6505 Device Tree Bindings
> +
> +maintainers:
> +  - Allen Chen <allen.chen@....com.tw>
> +
> +description: |
> +  The IT6505 is a high-performance DisplayPort 1.1a transmitter,
> +fully compliant with DisplayPort 1.1a, HDCP 1.3 specifications.
> +The IT6505 supports color depth of up to 36 bits (12 bits/color)
> +and ensures robust transmission of high-quality uncompressed video
> +content, along with uncompressed and compressed digital audio content.
Can we get consistent indent of the text here.
With this fixed:
Acked-by: Sam Ravnborg <sam@...nborg.org>

> +
> +  Aside from the various video output formats supported, the IT6505
> +also encodes and transmits up to 8 channels of I2S digital audio,
> +with sampling rate up to 192kHz and sample size up to 24 bits.
> +In addition, an S/PDIF input port takes in compressed audio of up to
> +192kHz frame rate.
> +
> +  Each IT6505 chip comes preprogrammed with an unique HDCP key,
> +in compliance with the HDCP 1.3 standard so as to provide secure
> +transmission of high-definition content. Users of the IT6505 need not
> +purchase any HDCP keys or ROMs.
> +
> +properties:
> +  compatible:
> +    const: ite,it6505
> +
> +  reg:
> +    - maxItems: 1
> +    - description: i2c address of the bridge
> +
> +  ovdd-supply:
> +    - maxItems: 1
> +    - description: I/O voltage
> +
> +  pwr18-supply:
> +    - maxItems: 1
> +    - description: core voltage
> +
> +  interrupts:
> +    - maxItems: 1
> +    - description: interrupt specifier of INT pin
> +
> +  reset-gpios:
> +    - maxItems: 1
> +    - description: gpio specifier of RESET pin
> +
> +  hpd-gpios:
> +    - maxItems: 1
> +    - description:
> +        - Hotplug detect GPIO
> +        - Indicates which GPIO should be used for hotplug detection
> +
> +  extcon:
> +    - maxItems: 1
> +    - description: extcon specifier for the Power Delivery
> +
> +  port:
> +    - type: object
> +    - description: A port node pointing to DPI host port node
> +
> +required:
> +  - compatible
> +  - reg
> +  - ovdd-supply
> +  - pwr18-supply
> +  - interrupts
> +  - reset-gpios
> +  - hpd-gpios
> +  - extcon
> +
> +examples:
> +  - |
> +    dp-bridge@5c {
> +        compatible = "ite,it6505";
> +        interrupts = <152 IRQ_TYPE_EDGE_RISING 152 0>;
> +        reg = <0x5c>;
> +        pinctrl-names = "default";
> +        pinctrl-0 = <&it6505_pins>;
> +        ovdd-supply = <&mt6358_vsim1_reg>;
> +        pwr18-supply = <&it6505_pp18_reg>;
> +        reset-gpios = <&pio 179 1>;
> +        hpd-gpios = <&pio 9 0>;
> +        extcon = <&usbc_extcon>;
> +
> +        port {
> +            it6505_in: endpoint {
> +                remote-endpoint = <&dpi_out>;
> +            };
> +        };
> +    };
> +
> +---