linux-kernel - Re: [PATCH] serial: 8250_early: Add earlycon support for Synopsys DesignWare ABP UART

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Date:	Sun, 12 Jun 2016 10:18:46 +0800
From:	Kefeng Wang <wangkefeng.wang@...wei.com>
To:	Jon Mason <jon.mason@...adcom.com>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.com>, <linux-serial@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <guohanjun@...wei.com>,
	Wei Xu <xuwei5@...ilicon.com>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] serial: 8250_early: Add earlycon support for Synopsys
 DesignWare ABP UART



On 2016/5/20 5:35, Jon Mason wrote:
> On Thu, May 19, 2016 at 09:45:33AM +0800, Kefeng Wang wrote:
>> +Cc Jon and arm-kernel mailist
>>
>> Any comments, thanks.
> 
> It works for me.  Please feel free to add
> 
> Tested-by: Jon Mason <jon.mason@...adcom.com>

Thanks Jon, hi Greg, ping...

BRs,
Kefeng

> 
> Thanks,
> Jon
> 
>>
>> Kefeng
>>
>> On 2016/5/11 14:06, Kefeng Wang wrote:
>>> Some board like Hisilicon D02 uses Synopsys DesignWare ABP UART, declare an
>>> OF early console for it, so early console device can be enabled with comand
>>> line "earlycon"(without option) via the "stdout-path" property in device-tree.
>>>
>>> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
>>> ---
>>>  drivers/tty/serial/8250/8250_early.c | 1 +
>>>  1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
>>> index 8d08ff5..85a12f0 100644
>>> --- a/drivers/tty/serial/8250/8250_early.c
>>> +++ b/drivers/tty/serial/8250/8250_early.c
>>> @@ -150,6 +150,7 @@ EARLYCON_DECLARE(uart, early_serial8250_setup);
>>>  OF_EARLYCON_DECLARE(ns16550, "ns16550", early_serial8250_setup);
>>>  OF_EARLYCON_DECLARE(ns16550a, "ns16550a", early_serial8250_setup);
>>>  OF_EARLYCON_DECLARE(uart, "nvidia,tegra20-uart", early_serial8250_setup);
>>> +OF_EARLYCON_DECLARE(uart, "snps,dw-apb-uart", early_serial8250_setup);
>>>  
>>>  #ifdef CONFIG_SERIAL_8250_OMAP
>>>  
>>>
>>
> 
> .
>