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SubjectRe: [PATCH v2] MIPS: Loongson: Enable devicetree based probing for 8250 ports in defconfig
On Mon, May 18, 2020 at 10:11:01AM +0800, Tiezhu Yang wrote:
> After commit 87fcfa7b7fe6 ("MIPS: Loongson64: Add generic dts"),
> there already exists the node and property of Loongson CPU UART0
> in loongson3-package.dtsi:
>
> cpu_uart0: serial@1fe001e0 {
> compatible = "ns16550a";
> reg = <0 0x1fe001e0 0x8>;
> clock-frequency = <33000000>;
> interrupt-parent = <&liointc>;
> interrupts = <10 IRQ_TYPE_LEVEL_HIGH>;
> no-loopback-test;
> };
>
> In order to support for serial console on the Loongson platform,
> add CONFIG_SERIAL_OF_PLATFORM=y to loongson3_defconfig.
>
> With this patch, we can see the following boot messages:
>
> [ 1.877745] printk: console [ttyS0] disabled
> [ 1.881979] 1fe001e0.serial: ttyS0 at MMIO 0x1fe001e0 (irq = 16, base_baud = 2062500) is a 16550A
> [ 1.890838] printk: console [ttyS0] enabled
>
> And also, we can login normally from the serial console.
>
> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
> ---
>
> v2:
> - Modify the patch subject
>
> arch/mips/configs/loongson3_defconfig | 1 +
> 1 file changed, 1 insertion(+)

applied to mips-next.

Thomas.

--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]

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