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Message-ID: <20200323220905.GA17573@bogus>
Date:   Mon, 23 Mar 2020 16:09:05 -0600
From:   Rob Herring <robh@...nel.org>
To:     Phong LE <ple@...libre.com>
Cc:     narmstrong@...libre.com, airlied@...ux.ie, daniel@...ll.ch,
        mark.rutland@....com, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...l.net, sam@...nborg.org, mripard@...nel.org,
        heiko.stuebner@...obroma-systems.com, linus.walleij@...aro.org,
        stephan@...hold.net, icenowy@...c.io, broonie@...nel.org,
        mchehab+samsung@...nel.org, davem@...emloft.net,
        gregkh@...uxfoundation.org, Jonathan.Cameron@...wei.com,
        andriy.shevchenko@...ux.intel.com, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/4] dt-bindings: display: bridge: add it66121 bindings

On Wed, Mar 11, 2020 at 01:51:33PM +0100, Phong LE wrote:
> Add the ITE bridge HDMI it66121 bindings.
> 
> Signed-off-by: Phong LE <ple@...libre.com>
> ---
>  .../bindings/display/bridge/ite,it66121.yaml  | 98 +++++++++++++++++++
>  1 file changed, 98 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml
> new file mode 100644
> index 000000000000..1717e880d130
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml
> @@ -0,0 +1,98 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/ite,it66121.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ITE it66121 HDMI bridge Device Tree Bindings
> +
> +maintainers:
> +  - Phong LE <ple@...libre.com>
> +  - Neil Armstrong <narmstrong@...libre.com>
> +
> +description: |
> +  The IT66121 is a high-performance and low-power single channel HDMI
> +  transmitter, fully compliant with HDMI 1.3a, HDCP 1.2 and backward compatible
> +  to DVI 1.0 specifications.
> +
> +properties:
> +  compatible:
> +    const: ite,it66121
> +
> +  reg:
> +    maxItems: 1
> +    description: base I2C address of the device
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description: GPIO connected to active low reset
> +
> +  vrf12-supply:
> +    maxItems: 1

Drop this. Supplies are always a single item.

> +    description: Regulator for 1.2V analog core power.
> +
> +  vcn33-supply:
> +    maxItems: 1
> +    description: Regulator for 3.3V digital core power.
> +
> +  vcn18-supply:
> +    maxItems: 1
> +    description: Regulator for 1.8V IO core power.
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  pclk-dual-edge:
> +    maxItems: 1

Not a valid property if this is boolean.

> +    description: enable pclk dual edge mode.
> +
> +  port:

You should have an output port to a connector node.

> +    type: object
> +
> +    properties:
> +      endpoint:
> +        type: object
> +        description: |
> +          Input endpoints of the bridge.
> +
> +    required:
> +      - endpoint
> +
> +required:
> +  - compatible
> +  - reg
> +  - reset-gpios
> +  - vrf12-supply
> +  - vcn33-supply
> +  - vcn18-supply
> +  - interrupts
> +  - port
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c6 {

i2c {

> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      it66121hdmitx: it66121hdmitx@4c {
> +        compatible = "ite,it66121";
> +        pinctrl-names = "default";
> +        pinctrl-0 = <&ite_pins_default>;
> +        vcn33-supply = <&mt6358_vcn33_wifi_reg>;
> +        vcn18-supply = <&mt6358_vcn18_reg>;
> +        vrf12-supply = <&mt6358_vrf12_reg>;
> +        reset-gpios = <&pio 160 1 /* GPIO_ACTIVE_LOW */>;
> +        interrupt-parent = <&pio>;
> +        interrupts = <4 8 /* IRQ_TYPE_LEVEL_LOW */>;
> +        reg = <0x4c>;
> +        pclk-dual-edge;
> +
> +        port {
> +          it66121_in: endpoint {
> +            remote-endpoint = <&display_out>;
> +          };
> +        };
> +      };
> +    };
> -- 
> 2.17.1
> 

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