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Community maintained packages for OpenWrt. Documentation for submitting pull requests is in CONTRIBUTING.md
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stty don't change baudrate #24420

Open SapeNeCo opened 1 week ago

SapeNeCo commented 1 week ago

Hello. I'm using OpenWRT Linux 6.1.53 with rk3568 microchip.

I'm sure dts and dtsi are spelled correctly. U-boot is also spelled correctly. All clks are indicated correctly, pins too.

I have 1 console port and 3 UARTs on the board.

For some reason, initially all UARTs are given a speed of 9600, and if you connect via tio with a speed of 9600, then everything works correctly, but when you change the speed via stty or tio, the interface completely breaks down, the speed is not correct, and if you return the setting back to 9600, now and at this speed there is only garbage in the terminal.

brada4 commented 1 week ago

Can you help with ubus call system board

SapeNeCo commented 3 days ago

Can you help with ubus call system board

What's wrong with him? I have solved my problem and I can throw a solution here.

brada4 commented 3 days ago

You need to figure out if it is wrong in openwrt or in upstream kernel and submit patches accordingly.

SapeNeCo commented 2 days ago

The problem turned out to be in the 8250 driver, namely in two files 8250_dw.c and 8250_port.c. I found a Github for an OpenWRT project whose 8250 driver had rockchip support. I changed some functions and created a patch, with which everything began to work perfectly and properly.

brada4 commented 2 days ago

you can find them in ubuntu and redhat, go for kernel.org and leave your patch in ../openwrt if you need them in openwrts lts kernels. https://github.com/torvalds/linux/tree/master/drivers/tty/serial/8250