Hi! I have tried to run linux on TP-LINK WR1043ND v1.8. I use branch master from git://git.linux-mips.org/pub/scm/ralf/linux I see a problem with UART speed setup. There is no UART output after serial port initialization. Here is the last correct linux output: Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled console [ttyS0] disabled 18020000.uart: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 12500000) is a 8250 I can disable UART speed setup in 8250 driver: --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -2208,6 +2208,8 @@ static void serial8250_set_divisor(struct uart_port *port, unsigned int baud, { struct uart_8250_port *up = up_to_u8250p(port); + return; + /* Workaround to enable 115200 baud on OMAP1510 internal ports */ if (is_omap1510_8250(up)) { if (baud == 115200) { With this very very dirty hack linux works fine. I suppose there is a problem in arch/mips/ath79/clock.c I have tryed to cherry-pick your 'MIPS: ath79: Fix the ar913x reference clock rate' and 'MIPS: ath79: Fix the ar724x clock calculation' commits from your github ath79 branch at https://github.com/AlbanBedel/linux/tree/ath79 but these patches don't help me. Could you please try to reproduce the problem? -- Best regards, Antony Pavlov