On 24.03.24 16:00, Aurelien Jarno wrote:
On 2024-03-21 19:11, Heinrich Schuchardt wrote:
The differences between the Milk-V Mars board and the VisionFive 2 board
are small enough that we can support both using the same U-Boot build.
* The model and compatible property are taken from proposed Linux patches.
* The EEPROM is atmel,24c02 according to the vendor U-Boot.
* The second Ethernet port is not available.
From the device tree that have been submitted to the kernel [1] it seems
another difference is that there is a CD gpio for mmc1.
Thank you for reviewing.
On all of Milk-V Mars, VisionFive 2 1.2B, and 1.3A I see GPIO 41 level
changing when removing or inserting an SD card using U-Boot command
'gpio status -a'. So this seems not to be Milk-V specific.
Could you, please, check.
From the schematics, it also seems that the usb0 port is not in
peripheral mode, but in host mode. That said on the submitted kernel
device tree it seems simply disabled.
All three blue-colored USB 3.0 ports are able to read an SD-card in U-Boot.
The black port provides 5V but I could not make it work.
On the schema I found:
USB20: Do not support OTG mode and AVSS_USB0-AVSS_USB2 attached to ground.
Could you, please, specify which node in the device-tree you want to
disable. I cannot see anything disabled for usb@10100000 and usb@0 in
the kernel device-tree.
Best regards
Heinrich
Aurelien
[1]
https://lore.kernel.org/linux-kernel/20240131132600.4067-2-jszh...@kernel.org/T/
