The UART used in these SoCs is actually a variant of the dw apb uart. Now there is a compatible string in that driver to handle the quirks switch the compatible for pm_uart over to mstar,msc313-uart. Signed-off-by: Daniel Palmer <daniel@xxxxxxxx> --- arch/arm/boot/dts/mstar-v7.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/mstar-v7.dtsi b/arch/arm/boot/dts/mstar-v7.dtsi index c26ba9b7b6dd..8464a8f1b136 100644 --- a/arch/arm/boot/dts/mstar-v7.dtsi +++ b/arch/arm/boot/dts/mstar-v7.dtsi @@ -175,7 +175,7 @@ gpio: gpio@207800 { }; pm_uart: uart@221000 { - compatible = "ns16550a"; + compatible = "mstar,msc313-uart", "snps,dw-apb-uart"; reg = <0x221000 0x100>; reg-shift = <3>; interrupts-extended = <&intc_irq GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>; -- 2.35.1