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[PATCH] serial: 8250_early: Add earlycon support for Synopsys DesignWare ABP UART

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Kefeng Wang

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May 11, 2016, 2:10:09 AM5/11/16
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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 <wangkef...@huawei.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

--
2.6.0.GIT

Kefeng Wang

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May 18, 2016, 9:50:06 PM5/18/16
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+Cc Jon and arm-kernel mailist

Any comments, thanks.

Kefeng

Jon Mason

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May 19, 2016, 5:40:07 PM5/19/16
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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....@broadcom.com>

Thanks,
Jon

Kefeng Wang

unread,
Jun 11, 2016, 10:30:04 PM6/11/16
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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....@broadcom.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 <wangkef...@huawei.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
>>>
>>>
>>
>
> .
>
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