Hi Otto, On Mon, Dec 14, 2020 at 8:34 PM Otto Meier <gf...@gmx.net> wrote: > > Hi Martin, > > Am 13.12.20 um 19:46 schrieb Martin Blumenstingl: > > Hi Otto, > > > > On Mon, Dec 7, 2020 at 1:43 PM Otto Meier <gf...@gmx.net> wrote: > > [...] > >>>> So with the latest u-boot and the kernel from > >>>> https://github.com/chewitt/linux/tree/amlogic-5.10.y > >>>> commit 725fc8df7898102f9031ba2075f763884ffa3ee8 everything is working > >>>> again. > >>>> USB does hotplugging as expected. > >>> So, this fixes USB under Linux ?? It's not clear > > if you have time it would be great if you could figure out which of > > the patches from Christian's tree fixes USB hotplugging for you. > > Or is it fixed in Linux 5.10-rcX even without any patches? > > > The new mainline kernel 5.10.0 from Linus, without any other patches > does detect USB hotpluging, > when using u-boot DMI: Hardkernel Co., Ltd. ODROID-C2/ODROID-C2, BIOS > 2021.01-rc3-00039-gec79f5ce22-dirty 12/08/2020 > and the following u-boot patch: [...] > When i use the last unpatched emmc bootable u-boot 2020.04 the kernel > boots, but usb hotplugging > does not work. Thank you for testing this!
> Hope this describes my findings. If i can help further, please give me a > note. to be honest: I am a bit lost here. I don't understand how the BOOT_* pins interfere with USB. I also don't have any Odroid-C2 board myself so I cannot do any experiments myself. Neil, please let me know if you have any idea here. Best regards, Martin
