Re: [PATCH v2 2/2] serial: earlycon: allow to specify uartclk in earlycon kernel-parameter

[Masahiro Yamada]

Hi Peter,

2015-10-22 0:35 GMT+09:00 Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>:
> Hi Masahiro,
>
> On 10/21/2015 11:31 AM, Masahiro Yamada wrote:
>> If it is always correct to preserve the initialization done by boot-loader,
>> the following code in 8250_early.c does not make sense.
>
> It's not always correct to preserve the initialization by the bootloader.
> For example, on my legacy x86 workstation, the bootloader does not
> initialize the h/w so when I want 8250 earlycon, I must specify the
> baud rate.

So, the input clock on the machine matches the following macro.

#define BASE_BAUD (1843200/16)


For ARM boards, we should depend on a boot loader.
Is this what you mean?

-- 
Best Regards
Masahiro Yamada
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/