[U-Boot] [PATCH v7 5/9] arm: serial: Add ability to use pre-initialized UARTs

[Simon Glass]

Hi Linus,

On 16 October 2015 at 15:23, Linus Walleij <linus.walleij at linaro.org> wrote:
> On Wed, Oct 14, 2015 at 6:55 PM, Sergey Temerkhanov
> <s.temerkhanov at gmail.com> wrote:
>
>> On some systems, UART initialization is performed before running U-Boot.
>> This commit allows to skip UART re-initializaion on those systems
>>
>> Signed-off-by: Sergey Temerkhanov <s.temerkhanov at gmail.com>
>> Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla at cavium.com>
>>
>> Reviewed-by: Simon Glass <sjg at chromium.org>
> (...)
>
>> diff --git a/doc/device-tree-bindings/serial/pl01x.txt b/doc/device-tree-bindings/serial/pl01x.txt
>> index 61c27d1..0591497 100644
>> --- a/doc/device-tree-bindings/serial/pl01x.txt
>> +++ b/doc/device-tree-bindings/serial/pl01x.txt
>> @@ -5,3 +5,6 @@ Required properties:
>>  - reg: exactly one register range with length 0x1000
>>  - clock: input clock frequency for the UART (used to calculate the baud
>>    rate divisor)
>> +
>> +Optional properties:
>> +- u-boot,skip-init: skip UART initialization at start.
>
> Again: get this merged in the Linux kernel FIRST. Is it?

We had a little bit of a chat about this at ELCE. It would be great to
get these changes merged with the kernel but the amount of
push-back/energy it requires is still excessive IMO. Any thoughts?

Regards,
Simon