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| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2013-01-14 19:53:54 +0100 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2013-01-16 19:13:18 +0100 |
| commit | 1bea07f16da0d77689cda7abe73939dd1dfdea22 (patch) | |
| tree | 73f358778abe372ca0ea57540c82040a3829b279 | |
| parent | 43880f709dc59840849e31b01735ac587195ef8a (diff) | |
| download | op-kernel-dev-1bea07f16da0d77689cda7abe73939dd1dfdea22.zip op-kernel-dev-1bea07f16da0d77689cda7abe73939dd1dfdea22.tar.gz | |
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>
| -rw-r--r-- | arch/arm/boot/dts/sunxi.dtsi | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/sunxi.dtsi b/arch/arm/boot/dts/sunxi.dtsi index 8bbc2bf..8b36abe 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"; }; |
