[RFC PATCH] imx8mp: fix boot hang when booting NXP kernel 5.15.32

[Rasmus Villemoes]

On 24/08/2022 12.17, Peng Fan wrote:
> 
> 
> On 8/23/2022 9:36 PM, Rasmus Villemoes wrote:
>> We have observed a somewhat weird bug: When booting the downstream NXP
>> kernel lf-5.15.32-2.0.0 [fa6c3168595c], sometimes the board would hang
>> during imx_lcdifv3_probe(). Adding some printk debugging revealed that
>> the hang always happened at the
>>
>>    writel(CTRL_SW_RESET, lcdifv3->base + LCDIFV3_CTRL_CLR);
> 
> Would you check the mediamix blk ctrl register before access this register?

Sorry, I don't understand.

Do you want me to try to print the contents of that register before this
line? If so, can you tell me the exact (physical) address you're
thinking of? And what are you looking for, exactly?

Rasmus