Re: [PATCH v2 4/4] arm64: dts: amlogic: add fbx8am DT overlays

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On Mon, Feb 12, 2024 at 06:53:01PM +0100, Marc Gonzalez wrote:
> From: Pierre-Hugues Husson <phhusson@xxxxxxxxxx>
> 
> Add support for two variants of the fbx8am board.
> 
> Signed-off-by: Pierre-Hugues Husson <phhusson@xxxxxxxxxx>
> Signed-off-by: Marc Gonzalez <mgonzalez@xxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/amlogic/Makefile                       |  7 +++++++
>  arch/arm64/boot/dts/amlogic/meson-g12a-fbx8am-brcm.dtso    | 35 ++++++++++++++++++++++++++++++++++
>  arch/arm64/boot/dts/amlogic/meson-g12a-fbx8am-realtek.dtso | 25 ++++++++++++++++++++++++
>  3 files changed, 67 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
> index e9baa2cf02273..2fd7c7a18126f 100644
> --- a/arch/arm64/boot/dts/amlogic/Makefile
> +++ b/arch/arm64/boot/dts/amlogic/Makefile
> @@ -81,3 +81,10 @@ dtb-$(CONFIG_ARCH_MESON) += meson-sm1-odroid-hc4.dtb
>  dtb-$(CONFIG_ARCH_MESON) += meson-sm1-sei610.dtb
>  dtb-$(CONFIG_ARCH_MESON) += meson-sm1-x96-air-gbit.dtb
>  dtb-$(CONFIG_ARCH_MESON) += meson-sm1-x96-air.dtb
> +
> +# Overlays
> +dtb-$(CONFIG_ARCH_MESON) += meson-g12a-fbx8am-brcm.dtbo
> +dtb-$(CONFIG_ARCH_MESON) += meson-g12a-fbx8am-realtek.dtbo
> +
> +# Enable support for DT overlays
> +DTC_FLAGS_meson-g12a-fbx8am += -@

Overlays need to be applied to something in the kernel at build time.
Applying is done the same way as composing object files for modules.

Rob




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