Hi, On Thursday, 05.04.2018 at 12:20, Andre Przywara wrote: > > [1] > > https://github.com/apritzel/linux/blob/f1827ce503ca19e6873847128f86849788cfc7db/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts > > > > For reference, I've uploaded a full dmesg of this kernel booting, here: > > https://gist.github.com/mato/96bfaf3a99a824024c0f27e76d99bc63 > > So something is explicitly turning this off: > [ 1.820315] usb0-vbus: disabling > > Can you try to add "regulator-always-on;" to the reg_usb0_vbus node in > the beginning of the .dts? That should leave it on for now, as a hack, > just for confirmation.
That works, I get 5V on the USB-A, and the port appears to work with a flash drive. > But I just see that there seems to be a glaring mismatch between the PHY > driver and the DT binding doc (and most .dts, actually): > So can you please replace the last line in the olinuxino.dts: > > - usb0_vbus-supply = <®_usb0_vbus>; > + usb0_vbus_power-supply = <®_usb0_vbus>; > > Then you should not need the regulator-always-on hack above. This does not work, I still see the same "disabling" message in dmesg and additionally lose most of the USB buses -- normally the kernel sees 5 buses (2x 1.1 and 3x 2.0), with this change it only sees one of each. Additionally, this change in combination with the regulator-always-on-hack removes the "disabling" message, gives 5V power on both ports, but the kernel does not see either of them. > > root@olinuxino:/sys/class/gpio# echo 201 > export > > -bash: echo: write error: Device or resource busy > > Yeah, this is now somewhat expected with the reg_usb0_vbus regulator, > which snatches the GPIO. If the above doesn't work, try to disable or > remove this node and try again. Should I try this approach separately? Have not done so yet. Cheers, -mato -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
