UART_OMAP_SYSC
omap_serial_outp(p, UART_OMAP_SYSC, 0x01);
while (!(omap_serial_in(p, UART_OMAP_SYSC) & 0x01));
sysc = uart_read(priv, UART_OMAP_SYSC);
uart_write(priv, UART_OMAP_SYSC, sysc);