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

From: Frank Li
Date: Thu Mar 27 2025 - 11:01:54 EST


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@xxxxxxxxxxxxxxx>
> ---

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

> 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@xxxxxxxxxxxxxxx>,
> + * 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
>