3308 115200波特率问题

Chip Platform Rockchip
1

我修改了此处波特率为115200
fiq_debugger: fiq-debugger {
compatible = “rockchip,fiq-debugger”;
rockchip,serial-id = <2>;
rockchip,wake-irq = <0>;
rockchip,irq-mode-enable = <0>;
rockchip,baudrate = <115200>; /* Only 115200 and 1500000 /
interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
status = “disabled”;
};
内核启动执行到：
[ 0.219551] pinctrl core: initialized pinctrl subsystem
[ 0.226020] NET: Registered protocol family 16
[ 0.236651] cpuidle: using governor menu
[ 0.240724] Registered FIQ tty driver
[ 0.244828] vdso: 2 pages (1 code @ ffffff8008626000, 1 data @ ffffff80088a4000)
[ 0.252416] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.259573] DMA: preallocated 256 KiB pool for atomic allocations
[ 0.268921] console [pstore-1] enabled
[ 0.272759] pstore: Registered ramoops as persistent store backend
[ 0.279084] ramoops: attached 0xf0000@0x110000, ecc: 0/0
[ 0.302470] fiq debugger fiq mode enabled
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再次出现乱发，请问还有哪里需要修改?

2
  1. 确保UART2的GPIO口没有被复用成其他功能
  2. 除了修改kernel的dts，还得修改uboot的u-boot/configs/rk3308_defconfig里的CONFIG_BAUDRATE