[Letux-kernel] LX20 prototype is booting

[H. Nikolaus Schaller]

Hi Paul,

> Am 29.04.2025 um 17:10 schrieb Paul Boddie <paul at boddie.org.uk>:
> 
> On Tuesday, 29 April 2025 14:52:03 CEST H. Nikolaus Schaller wrote:
>> 
>> With that fixed, I can now boot up to:
>> 
>> calibrate_delay_converge()
>> 
>> So let's see what happens there (or does not happen but should).
> 
> We experienced issues in this area at the end of January 2024, according to my 
> records. I seemed to make progress with my paulb-letux-6.7-rc8-tcu branch at

Yes, indeed it looks like a repetition of issues...

> the time, and I believe that such issues might have been related to interrupt 
> handling.

What I wonder is that the sudomaker-6.1.y kernel shows exactly the same issue
and I assumed that they have it working on the halley5 board...

Ah, that may be an interesting check: do they have some special trick in the
halley5.dts?

Indeed. They define the extclk frequency board specific and have assigned
clocks for ost32 and ost64. This is something I do not yet have in the lx20.dts
or "our" x2000.dtsi. And I use the lx20.dts also on the sudomaker kernel...

Code is compiling for next test.

BTW: I observed that they do not use DMA on the UARTs...

BR,
Nikolaus