A test with the command below gives for example these warnings: arch/arm/boot/dts/rk3288-evb-act8846.dt.yaml: sram@ff720000: '#address-cells' is a required property arch/arm/boot/dts/rk3288-evb-act8846.dt.yaml: sram@ff720000: '#size-cells' is a required property arch/arm/boot/dts/rk3288-evb-act8846.dt.yaml: sram@ff720000: 'ranges' is a required property Fix this error by adding '#address-cells', '#size-cells' and 'ranges' to the 'rockchip,rk3288-pmu-sram' compatible node in rk3288.dtsi. make ARCH=arm dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/sram/sram.yaml Signed-off-by: Johan Jonker <jbx6244@xxxxxxxxx> --- Not tested with hardware. Changed v2: Fix dtsi. --- arch/arm/boot/dts/rk3288.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi index 9c8741bb1..f102fec69 100644 --- a/arch/arm/boot/dts/rk3288.dtsi +++ b/arch/arm/boot/dts/rk3288.dtsi @@ -730,6 +730,9 @@ pmu_sram: sram@ff720000 { compatible = "rockchip,rk3288-pmu-sram", "mmio-sram"; reg = <0x0 0xff720000 0x0 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x0 0xff720000 0x1000>; }; pmu: power-management@ff730000 { -- 2.11.0