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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2020-05-18 05:11:01 +0300 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-05-18 10:34:41 +0300 |
| commit | 143463fd33fe0abc13fbb93236b060ee9b73d5cb (patch) | |
| tree | ffaea31d9e31a55b2fe295347a31c1d51434bd3c /arch/mips | |
| parent | 2971317ab04a38e34be5f4d62a65000b63857686 (diff) | |
| download | linux-143463fd33fe0abc13fbb93236b060ee9b73d5cb.tar.xz | |
MIPS: Loongson: Enable devicetree based probing for 8250 ports in defconfig
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>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/configs/loongson3_defconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/configs/loongson3_defconfig b/arch/mips/configs/loongson3_defconfig index 4df24343e8ba..3d4c7e9996c5 100644 --- a/arch/mips/configs/loongson3_defconfig +++ b/arch/mips/configs/loongson3_defconfig @@ -217,6 +217,7 @@ CONFIG_SERIAL_8250_EXTENDED=y CONFIG_SERIAL_8250_MANY_PORTS=y CONFIG_SERIAL_8250_SHARE_IRQ=y CONFIG_SERIAL_8250_RSA=y +CONFIG_SERIAL_OF_PLATFORM=y CONFIG_HW_RANDOM=y CONFIG_RAW_DRIVER=m CONFIG_I2C_CHARDEV=y |