Re: [PATCH/RFC] arm64: dts: renesas: draak: Add overlay for HDMI input

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Hi Laurent,

Thanks for your patch.

On 2023-02-10 23:15:51 +0200, Laurent Pinchart wrote:
> The Draak board has an ADV7180 CVBS decoder and an ADV7612 HDMI decoder,
> both connected to the same VIN input. DIP switches are used to select
> one of the two devices, with the CVBS decoder being the default. Add an
> overlay that selects the HDMI decoder.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> ---
> 
> Niklas, would this be an acceptable way to handle the DIP switches on
> the Draak board ?

I think this is a perfect way to handle DIP switch settings. I have a 
similar patch for Eagle I wish to upstream one of these days.

For this patch, however correct it is, I have a comment. As part of the 
ongoing rebasing of BSP patches I'm preparing to submit a patch which 
makes the HDMI the default input for Draak. The BSP team have requested 
this as they wish to align all Gen3 boards to have HDMI as the default 
input.

Hence, this patch is awesome, but should be reversed to overlay RCA 
entablement :-)

> 
> ---
>  arch/arm64/boot/dts/renesas/Makefile          |  1 +
>  .../boot/dts/renesas/draak-hdmi-input.dtso    | 33 +++++++++++++++++++
>  2 files changed, 34 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/renesas/draak-hdmi-input.dtso
> 
> diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
> index 0699b51c1247..de4170af611e 100644
> --- a/arch/arm64/boot/dts/renesas/Makefile
> +++ b/arch/arm64/boot/dts/renesas/Makefile
> @@ -88,4 +88,5 @@ dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-smarc.dtb
>  dtb-$(CONFIG_ARCH_R9A09G011) += r9a09g011-v2mevk2.dtb
>  
>  dtb-$(CONFIG_ARCH_RCAR_GEN3) += draak-ebisu-panel-aa104xd12.dtbo
> +dtb-$(CONFIG_ARCH_RCAR_GEN3) += draak-hdmi-input.dtbo
>  dtb-$(CONFIG_ARCH_RCAR_GEN3) += salvator-panel-aa104xd12.dtbo
> diff --git a/arch/arm64/boot/dts/renesas/draak-hdmi-input.dtso b/arch/arm64/boot/dts/renesas/draak-hdmi-input.dtso
> new file mode 100644
> index 000000000000..e0d671f0cab3
> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/draak-hdmi-input.dtso
> @@ -0,0 +1,33 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2023 Ideas on Board Oy
> + *
> + * Device tree overlay for the Draak board, to enable HDMI input. This requires
> + * setting DIP switches SW49, SW50, SW51 and SW52 to ON, and SW53 and SW54 to
> + * OFF.
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +&adv7612_out {
> +	remote-endpoint = <&vin4_in>;
> +};
> +
> +&i2c0 {
> +	composite-in@20 {
> +		ports {
> +			port@3 {
> +				/delete-node/ endpoint;
> +			};
> +		};
> +	};
> +};
> +
> +&vin4_in {
> +	remote-endpoint = <&adv7612_out>;
> +};
> +
> +&vin4_pins_cvbs {
> +	groups = "vin4_data24", "vin4_sync", "vin4_clk";
> +};
> 
> -- 
> Regards,
> 
> Laurent Pinchart
> 

-- 
Kind Regards,
Niklas Söderlund



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