Re: [PATCH v4 0/6] rpi5: initial support

Jens Maus
2024-01-17T15:31:03Z

Hi,

> Am 17.01.2024 um 16:23 schrieb Ivan T. Ivanov <iivanov@suse.de>:
>
>> That’s in fact exactly what I was also trying in addition to get u-boot running with your patches in my own buildroot-based environment. So I was also exactly using this Tumbleweed rpi4 image and simply replaced the u-boot.bin file with my own build version which I built with your patches applied and using the rpi_arm64_defconfig as the build config. However, there is still no output on any of the HDMI ports. Haven’t tried to see if there is any serial output on the special UART debug port of the rpi5. Should there be any output at all?
>
> Unfortunately on RPi5 they moved UART debug port to
> separate connector [1], [2].

I know. In fact, I already have such a rpi debug probe [1] at my desk. Nevertheless, haven’t tried to fire up the rpi5 with your u-boot.bin to see if anything sensible comes up at that special UART debug port which could explain the stalling and no HDMI output I saw here last time I checked.

> Let me update my Tumbleweed image and check again.

Thx. Can you perhaps also elaborate on your build environment for that particular u-boot.bin build? Or perhaps put a binary of it somewhere so that I could check if it works with your u-boot.bin build.

> Just to reiterate that if not properly syncing
> content to uSD card could have strange side effects.

I am aware of these kind of issues. But in fact, I am quite sure I synced all content properly to the microSD card.

Best Regards,

Jens

[1] https://www.raspberrypi.com/documentation/microcontrollers/debug-probe.html
--
Jens Maus, Dresden/Germany