[PATCH 1/2] rockchip: rk3588: add support for UART2 M1 and M2 in SPL

[Kever Yang]

Hi Quentin,

On 2024/4/23 17:31, Quentin Schulz wrote:
> Hi Kever,
>
> On 4/23/24 03:09, Kever Yang wrote:
>> Hi Quentin,
>>
>> On 2024/4/23 00:41, Quentin Schulz wrote:
>>> From: Quentin Schulz <quentin.schulz at theobroma-systems.com>
>>>
>>> UART2 controller is the controller in the reference design for debug
>>> console. The default mux is M0 in that reference design. Until now, all
>>> boards seemed to be using UART2M0 but RK3588 Tiger for example will be
>>> using UART2M2 instead.
>> This feature already been supported, please use 
>> CONFIG_DEBUG_UART_BASE and
>> CONFIG_ROCKCHIP_UART_MUX_SEL_M to select your output channel.
>>
>
> CONFIG_ROCKCHIP_UART_MUX_SEL_M is only available in Rockchip's 
> downstream U-Boot.

Sorry, my mistake, I'm searching the wrong code.

I though we should already have solution for this, it should be 
DEBUG_UART_CHANNEL then.


Thanks,

- Kever

>
> git log -p -S ROCKCHIP_UART_MUX_SEL_M
>
> returns nothing upstream, neither does git grep.
>
> I used the same mechanism as for PX30.
>
> This patch will be removed though as it's not needed until we have an 
> open-source DRAM init. Until then we have to rely on the DDR bin to 
> setup the UART.
>
> Cheers,
> Quentin