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authorTiezhu Yang <yangtiezhu@loongson.cn>2020-05-18 10:11:01 +0800
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2020-05-18 09:34:41 +0200
commit143463fd33fe0abc13fbb93236b060ee9b73d5cb (patch)
treeffaea31d9e31a55b2fe295347a31c1d51434bd3c /arch/mips/configs
parent2971317ab04a38e34be5f4d62a65000b63857686 (diff)
downloadlinux-143463fd33fe0abc13fbb93236b060ee9b73d5cb.tar.bz2
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/configs')
-rw-r--r--arch/mips/configs/loongson3_defconfig1
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