Unit addresses are expected to be lower case. Pointed also by W=1 builds: Warning (simple_bus_reg): /soc/serial@5801A000: simple-bus unit address format error, expected "5801a000" Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> --- arch/arm64/boot/dts/bitmain/bm1880.dtsi | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/bitmain/bm1880.dtsi b/arch/arm64/boot/dts/bitmain/bm1880.dtsi index 53a9b76057aa..22a200fb07d2 100644 --- a/arch/arm64/boot/dts/bitmain/bm1880.dtsi +++ b/arch/arm64/boot/dts/bitmain/bm1880.dtsi @@ -184,7 +184,7 @@ uart0: serial@58018000 { status = "disabled"; }; - uart1: serial@5801A000 { + uart1: serial@5801a000 { compatible = "snps,dw-apb-uart"; reg = <0x0 0x5801a000 0x0 0x2000>; clocks = <&clk BM1880_CLK_UART_500M>, @@ -197,7 +197,7 @@ uart1: serial@5801A000 { status = "disabled"; }; - uart2: serial@5801C000 { + uart2: serial@5801c000 { compatible = "snps,dw-apb-uart"; reg = <0x0 0x5801c000 0x0 0x2000>; clocks = <&clk BM1880_CLK_UART_500M>, @@ -210,7 +210,7 @@ uart2: serial@5801C000 { status = "disabled"; }; - uart3: serial@5801E000 { + uart3: serial@5801e000 { compatible = "snps,dw-apb-uart"; reg = <0x0 0x5801e000 0x0 0x2000>; clocks = <&clk BM1880_CLK_UART_500M>, -- 2.34.1