[Letux-kernel] LX16 & LX20

[H. Nikolaus Schaller]

Hi,

> Am 08.03.2025 um 16:08 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
> 
> It was no problem to flash the ESP32 modules in circuit through the
> letux-esp-flasher tool. But on one board there are only tx_errors.
> The reason is a short of SD-D0 to GND... But it works on the two
> other boards. Power supply and USB (client or power in) seem to
> be ok. USB OTG/DRP are broken and behave strangely like on the
> v0.3 boards. What I haven't tried is the SPI display.

SPI display (with mplayeron X11) is working as good as last version.
I.e. approx. 4 FPS with visible scanning the lines from to to bottom...

It is impressive that it works, but not impressive with the low
frame rate :(

So we'd better not show that to the public yet.

BTW: I have found several forum discussions for the

 spi_master spi0: noqueue transfer failed

errors. People have reported that on AM625, i.MX, RasPi and other
processors. So it seems to be something quite fundamental...

Reports even go back > 10 years;

https://patchwork.kernel.org/project/spi-devel-general/patch/1390053922.16621.4.camel@phoenix/

BR,
Nikolaus