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authorMaxime Ripard <maxime.ripard@free-electrons.com>2013-01-14 19:53:54 +0100
committerMaxime Ripard <maxime.ripard@free-electrons.com>2013-01-16 19:13:18 +0100
commit1bea07f16da0d77689cda7abe73939dd1dfdea22 (patch)
tree73f358778abe372ca0ea57540c82040a3829b279 /arch/arm
parent43880f709dc59840849e31b01735ac587195ef8a (diff)
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: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/boot/dts/sunxi.dtsi6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/sunxi.dtsi b/arch/arm/boot/dts/sunxi.dtsi
index 8bbc2bfef22..8b36abea9f2 100644
--- a/arch/arm/boot/dts/sunxi.dtsi
+++ b/arch/arm/boot/dts/sunxi.dtsi
@@ -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";
};