linux-kernel - Re: [PATCH v8 4/7] dt-bindings: display: mediatek: dpi sample data in dual edge support

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Date:   Wed, 26 Feb 2020 09:58:42 +0800
From:   CK Hu <ck.hu@...iatek.com>
To:     Jitao Shi <jitao.shi@...iatek.com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <yingjoe.chen@...iatek.com>,
        <eddie.huang@...iatek.com>, <cawa.cheng@...iatek.com>,
        <bibby.hsieh@...iatek.com>, <stonea168@....com>,
        <huijuan.xie@...iatek.com>
Subject: Re: [PATCH v8 4/7] dt-bindings: display: mediatek: dpi sample data
 in dual edge support

Hi, Jitao:

On Tue, 2020-02-25 at 17:40 +0800, Jitao Shi wrote:
> Add property "pclk-sample" to config the dpi sample on falling (0),
> rising (1), both falling and rising (2).
> 
> Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
> ---
>  .../devicetree/bindings/display/mediatek/mediatek,dpi.txt     | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt
> index a7b1b8bfb65e..f362fff51437 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt
> @@ -20,6 +20,9 @@ Required properties:
>  Optional properties:
>  - pinctrl-names: Contain "gpiomode" and "dpimode".
>    pinctrl-names see Documentation/devicetree/bindings/pinctrlpinctrl-bindings.txt
> +- pclk-sample: 0: sample in falling edge, 1: sample in rising edge, 2: sample
> +  in both falling and rising edge.

The value has been defined in video-interfaces.txt, you need not to
define it again.

Regards,
CK

> +  pclk-sample see Documentation/devicetree/bindings/media/video-interfaces.txt.
>  
>  Example:
>  
> @@ -37,6 +40,7 @@ dpi0: dpi@...1d000 {
>  
>  	port {
>  		dpi0_out: endpoint {
> +			pclk-sample = 0;
>  			remote-endpoint = <&hdmi0_in>;
>  		};
>  	};