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Provide an overlay that enables the panel. >>> >>> Signed-off-by: Frieder Schrempf >>> --- >>> Note: This currently throws the following warnings: >>> >>> Warning (graph_port): /fragment@3: graph port node name should be 'port' >>> Warning (graph_endpoint): /fragment@3/__overlay__: graph endpoint node name should be 'endpoint' >>> Warning (graph_endpoint): /fragment@3/__overlay__: graph connection to node '/fragment@7/__overlay__/ports/port@0/endpoint' is not bidirectional >>> >>> There is the following commit in DTC that relaxes these checks and >>> will eventually resolve these warnings: >>> >>> 84b056a89d ("checks: relax graph checks for overlays") >>> >>> https://git.kernel.org/pub/scm/utils/dtc/dtc.git/commit/?id=84b056a89d3c5b6cf6c5eeeafd4c4b14d6333aa9 >>> --- >>> arch/arm64/boot/dts/freescale/Makefile | 4 + >>> .../boot/dts/freescale/imx8mm-kontron-dl.dtso | 210 ++++++++++++++++++ >>> 2 files changed, 214 insertions(+) >>> create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso >>> >>> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile >>> index f04c22b7de72e..d8af069139920 100644 >>> --- a/arch/arm64/boot/dts/freescale/Makefile >>> +++ b/arch/arm64/boot/dts/freescale/Makefile >>> @@ -244,6 +244,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx93-tqma9352-mba93xxla.dtb >>> dtb-$(CONFIG_ARCH_MXC) += imx93-var-som-symphony.dtb >>> dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-evk.dtb >>> >>> +imx8mm-kontron-dl-dtbs := imx8mm-kontron-bl.dtb imx8mm-kontron-dl.dtbo >>> + >>> +dtb-$(CONFIG_ARCH_MXC) += imx8mm-kontron-dl.dtb >>> + >>> imx8mm-venice-gw72xx-0x-imx219-dtbs := imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-imx219.dtbo >>> imx8mm-venice-gw72xx-0x-rpidsi-dtbs := imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rpidsi.dtbo >>> imx8mm-venice-gw72xx-0x-rs232-rts-dtbs := imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs232-rts.dtbo >>> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso b/arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso >>> new file mode 100644 >>> index 0000000000000..b2d593d700e2d >>> --- /dev/null >>> +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso >>> @@ -0,0 +1,210 @@ >>> +// SPDX-License-Identifier: GPL-2.0 >>> +/* >>> + * Copyright (C) 2023 Kontron Electronics GmbH >> >> 2024? >> >>> + */ >>> + >>> +/dts-v1/; >>> +/plugin/; >>> + >>> +#include >>> +#include "imx8mm-pinfunc.h" >>> + >>> +&{/} { >>> + compatible = "kontron,imx8mm-bl", "kontron,imx8mm-sl", "fsl,imx8mm"; >> >> Not sure we need compatible in overlay. > > I've seen discussions around this elsewhere. We don't need it, but it > seems a nice way to express which base DT this overlay is intended to be > applied to. > > Anyway, I can remove the compatible for now. Your other comments will be > fixed in v2 as well. For whatever reasons, the build for the combined DT + overlay works only if the compatible is in place. Therefore I will keep it. DTC_FLAGS=-@ make ARCH=arm64 CHECK_DTBS=y CROSS_COMPILE=aarch64-linux-gnu- -j16 freescale/imx8mm-kontron-dl.dtb DTOVLCH arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtb Failed to apply 'arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtbo': FDT_ERR_NOTFOUND