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From: narmstrong@baylibre.com (Neil Armstrong)
To: linus-amlogic@lists.infradead.org
Subject: [PATCH 1/3] dt-bindings: display: dw_hdmi.txt
Date: Mon, 19 Mar 2018 14:11:09 +0100	[thread overview]
Message-ID: <1ed321a1-cdfd-6e86-bb8d-4ca8ffeb6369@baylibre.com> (raw)
In-Reply-To: <20180319114345.29837-2-hverkuil@xs4all.nl>

On 19/03/2018 12:43, Hans Verkuil wrote:
> From: Hans Verkuil <hans.verkuil@cisco.com>
> 
> Some boards have both a DesignWare and their own CEC controller.
> The CEC pin is only hooked up to their own CEC controller and not
> to the DW controller.
> 
> Add the cec-disable property to disable the DW CEC controller.
> 
> This particular situation happens on Amlogic boards that have their
> own meson CEC controller.
> 
> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
> ---
>  Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt b/Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt
> index 33bf981fbe33..4a13f4858bc0 100644
> --- a/Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt
> +++ b/Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt
> @@ -27,6 +27,9 @@ responsible for defining whether each property is required or optional.
>    - "isfr" is the internal register configuration clock (mandatory).
>    - "cec" is the HDMI CEC controller main clock (optional).
>  
> +- cec-disable: Do not use the DWC CEC controller since the CEC line is not
> +  hooked up even though the CEC DWC IP is present.
> +
>  - ports: The connectivity of the DWC HDMI TX with the rest of the system is
>    expressed in using ports as specified in the device graph bindings defined
>    in Documentation/devicetree/bindings/graph.txt. The numbering of the ports
> 

Acked-by: Neil Armstrong <narmstrong@baylibre.com>

  parent reply	other threads:[~2018-03-19 13:11 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-19 11:43 [PATCH 0/3] dw-hdmi: add property to disable CEC Hans Verkuil
2018-03-19 11:43 ` [PATCH 1/3] dt-bindings: display: dw_hdmi.txt Hans Verkuil
2018-03-19 11:46   ` Fabio Estevam
2018-03-19 11:48     ` Hans Verkuil
2018-03-19 13:11   ` Neil Armstrong [this message]
2018-03-19 11:43 ` [PATCH 2/3] drm: bridge: dw-hdmi: check the cec-disable property Hans Verkuil
2018-03-19 13:11   ` Neil Armstrong
2018-03-19 11:43 ` [PATCH 3/3] arm64: dts: meson-gxl-s905x-libretech-cc: add cec-disable Hans Verkuil
2018-03-19 13:11   ` Neil Armstrong
2018-03-19 13:10 ` [PATCH 0/3] dw-hdmi: add property to disable CEC Neil Armstrong

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