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Commit 1bea07f1 authored by Maxime Ripard's avatar Maxime Ripard
Browse files

ARM: sunxi: Use the Synosys APB UART instead of ns8250 



The UART controller used in the A10/A13 is the Synopsys DesignWare 8250.
The wrong use of a regular 8250 driver may lead to a oops during kernel
boot with "irq 17: nobody cared", because the apb UART as an extra
interrupt that gets raised when writing to the LCR when busy.

Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
parent 43880f70

arch/arm/boot/dts/sunxi.dtsi

+4 −2
Original line number Diff line number Diff line
@@ -60,19 +60,21 @@ 
		};



		uart0: uart@01c28000 {

			compatible = "ns8250";

			compatible = "snps,dw-apb-uart";

			reg = <0x01c28000 0x400>;

			interrupts = <1>;

			reg-shift = <2>;

			reg-io-width = <4>;

			clock-frequency = <24000000>;

			status = "disabled";

		};



		uart1: uart@01c28400 {

			compatible = "ns8250";

			compatible = "snps,dw-apb-uart";

			reg = <0x01c28400 0x400>;

			interrupts = <2>;

			reg-shift = <2>;

			reg-io-width = <4>;

			clock-frequency = <24000000>;

			status = "disabled";

		};