The DDR PMU on i.MX 8MP has its own compatible described in bindings and used in the driver (with its own quirks). Remove additional fsl,imx8m-ddr-pmu compatible to fix dtbs_check warnings like: arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dt.yaml: ddr-pmu@3d800000: compatible: ['fsl,imx8mq-ddr-pmu', 'fsl,imx8m-ddr-pmu'] is not valid under any of the given schemas (Possible causes of the failure): arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dt.yaml: ddr-pmu@3d800000: compatible: ['fsl,imx8mq-ddr-pmu', 'fsl,imx8m-ddr-pmu'] is too long From schema: Docmentation/devicetree/bindings/perf/fsl-imx-ddr.yaml Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> --- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi index 9de2aa1c573c..e34eff19fcae 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi @@ -746,7 +746,7 @@ }; ddr-pmu@3d800000 { - compatible = "fsl,imx8mp-ddr-pmu", "fsl,imx8m-ddr-pmu"; + compatible = "fsl,imx8mp-ddr-pmu"; reg = <0x3d800000 0x400000>; interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>; }; -- 2.17.1