linux-kernel - Re: [PATCH 3/7] ARM: dts: ls1021a-tqmals1021a: Add HDMI overlay

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Message-ID: <Z+VnmkgpWhlLm/W9@lizhi-Precision-Tower-5810>
Date: Thu, 27 Mar 2025 10:58:34 -0400
From: Frank Li <Frank.li@....com>
To: Alexander Stein <alexander.stein@...tq-group.com>
Cc: Shawn Guo <shawnguo@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/7] ARM: dts: ls1021a-tqmals1021a: Add HDMI overlay

On Thu, Mar 27, 2025 at 03:41:09PM +0100, Alexander Stein wrote:
> This add an overlay for using the RGB-to-HDMI bridge.
> Note: As DDC is directly connected to general I2C bus, there might be I2C
> address conflicts. Hence not all displays might work.
>
> Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
> ---

Reviewed-by: Frank Li <Frank.Li@....com>

>  arch/arm/boot/dts/nxp/ls/Makefile             |  3 ++
>  .../ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso | 32 +++++++++++++++++++
>  2 files changed, 35 insertions(+)
>  create mode 100644 arch/arm/boot/dts/nxp/ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso
>
> diff --git a/arch/arm/boot/dts/nxp/ls/Makefile b/arch/arm/boot/dts/nxp/ls/Makefile
> index 14759331dba24..225a7665b8ad1 100644
> --- a/arch/arm/boot/dts/nxp/ls/Makefile
> +++ b/arch/arm/boot/dts/nxp/ls/Makefile
> @@ -6,3 +6,6 @@ dtb-$(CONFIG_SOC_LS1021A) += \
>  	ls1021a-tqmls1021a-mbls1021a.dtb \
>  	ls1021a-tsn.dtb \
>  	ls1021a-twr.dtb
> +
> +ls1021a-tqmls1021a-mbls1021a-hdmi-dtbs += ls1021a-tqmls1021a-mbls1021a.dtb ls1021a-tqmls1021a-mbls1021a-hdmi.dtbo
> +dtb-$(CONFIG_SOC_LS1021A) += ls1021a-tqmls1021a-mbls1021a-hdmi.dtb
> diff --git a/arch/arm/boot/dts/nxp/ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso b/arch/arm/boot/dts/nxp/ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso
> new file mode 100644
> index 0000000000000..e713a2ecbfc25
> --- /dev/null
> +++ b/arch/arm/boot/dts/nxp/ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso
> @@ -0,0 +1,32 @@
> +// SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
> +/*
> + * Copyright 2013-2014 Freescale Semiconductor, Inc.
> + * Copyright 2018-2025 TQ-Systems GmbH <linux@...tq-group.com>,
> + * D-82229 Seefeld, Germany.
> + * Author: Alexander Stein
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +&dcu {
> +	status = "okay";
> +
> +	port {
> +		dcu_out: endpoint {
> +			remote-endpoint = <&sii9022a_in>;
> +		};
> +	};
> +};
> +
> +&hdmi_out {
> +	status = "okay";
> +};
> +
> +&sii9022a {
> +	status = "okay";
> +};
> +
> +&sii9022a_in {
> +	remote-endpoint = <&dcu_out>;
> +};
> --
> 2.43.0
>