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Re: [Qemu-discuss] ttyS1 on qemu-system-x86_64 is not working

From: Li RongQing
Subject: Re: [Qemu-discuss] ttyS1 on qemu-system-x86_64 is not working
Date: Mon, 15 Feb 2016 13:00:18 +0800

On Mon, Feb 15, 2016 at 11:19 AM, Li RongQing <address@hidden> wrote:
> 3. debug in kernel shows that /dev/ttyS1 type is unknown, since kernel
> can not find its type by reading the register UART_IER

address@hidden:~# cat /proc/tty/driver/serial
serinfo:1.0 driver revision:
0: uart:16550A port:000003F8 irq:4 tx:19770 rx:130 RTS|CTS|DTR|DSR|CD
1: uart:unknown port:000002F8 irq:3
2: uart:unknown port:000003E8 irq:4
3: uart:unknown port:000002E8 irq:3


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