Odroid n2+ usb broken on reboot

[Anand Moon]

Hi Wayne,

On Sun, 11 May 2025 at 01:51, Wayne Schroeder <raz at chewies.net> wrote:
>
> Applied patches to 2025.04 release (applied clean).  Made stock
> defconfig for odroid n2, built, signed, installed.  The reboot issue
> remains and usb ports are unavailable to linux kernel after reboot.
>
> It is worth noting that linux does see some enumeration of devices
> after a while, but even if it logs to the console about device
> attachment, the devices don't actually function.  This was the same
> behavior with the release version.
>
Thanks for testing these patches.
We need to modify the boot order to probe USB before MMC

diff --git a/include/configs/meson64.h b/include/configs/meson64.h
index f3275b37a51..3ace59880bd 100644
--- a/include/configs/meson64.h
+++ b/include/configs/meson64.h
@@ -119,8 +119,8 @@
 #define BOOT_TARGET_DEVICES(func) \
        func(ROMUSB, romusb, na)  \
        func(USB_DFU, usbdfu, na)  \
-       BOOT_TARGET_MMC(func) \
        BOOT_TARGET_DEVICES_USB(func) \
+       BOOT_TARGET_MMC(func) \
        BOOT_TARGET_NVME(func) \
        BOOT_TARGET_SCSI(func) \
        BOOT_TARGET_PXE(func) \

Here is the boot sequence at my end.
------------------------
U-Boot 2025.07-rc1-00223-g704a4d1fd804 (May 12 2025 - 12:15:29 +0530)
odroid-n2/n2-plus

Model: Hardkernel ODROID-N2
SoC:   Amlogic Meson G12B (S922X) Revision 29:c (40:2)
DRAM:  1 GiB (total 3.8 GiB)
Core:  402 devices, 30 uclasses, devicetree: separate
MMC:   mmc at ffe05000: 0, mmc at ffe07000: 1
Loading Environment from nowhere... OK
In:    usbkbd,serial
Out:   vidconsole,serial
Err:   vidconsole,serial
Board variant: n2-plus
Net:   eth0: ethernet at ff3f0000

Hit any key to stop autoboot:  0
starting USB...
Register 3000140 NbrPorts 3
Starting the controller
USB XHCI 1.10
Bus usb at ff500000: 4 USB Device(s) found
       scanning usb for storage devices... 1 Storage Device(s) found

Device 0: Vendor: ASMT     Rev: 0    Prod: 2115
            Type: Hard Disk
            Capacity: 114473.4 MB = 111.7 GB (234441648 x 512)
... is now current device
Scanning usb 0:1...
Card did not respond to voltage select! : -110
Cannot persist EFI variables without system partition
Loading Boot0000 'mmc 1' failed
Loading Boot0001 'usb 0' failed
EFI boot manager: Cannot load any image
Card did not respond to voltage select! : -110
switch to partitions #0, OK
mmc1(part 0) is current device
Scanning mmc 1:1...
Found /extlinux/extlinux.conf
Retrieving file: /extlinux/extlinux.conf
1:      Manjaro ARM
Retrieving file: /Image
Retrieving file: /initramfs-linux.img
append: initrd=/initramfs-linux.img console=ttyAML0,115200n8
root=PARTUUID=0efc7c36-02 rootwait audit=0 clk_ignore_unused
plymouth.ignore-serial-consoles

> Wayne
>
> On Fri, May 9, 2025 at 10:01 AM Wayne Schroeder <raz at chewies.net> wrote:
> >
> > Yes.  Will report back how it works on the n2+.
> >
> >
> > On Fri, May 9, 2025 at 2:08 AM Anand Moon <linux.amoon at gmail.com> wrote:
> > >
> > > Hi Wayne,
> > >
> > > On Fri, 9 May 2025 at 01:25, Wayne Schroeder <raz at chewies.net> wrote:
> > > >
> > > > I actually already have a working solution that I documented in my
> > > > github repo (dubschro/odroid-n2).  All I do is set BOOTCOMMAND to
> > > > check/delete a flag file on my boot partition and if it is found, then
> > > > reset usb and sleep for 10 seconds.  I then have a systemd shutdown
> > > > script only on reboot to touch that file.
> > > >
> > > > CONFIG_BOOTCOMMAND="fatrm mmc 0:1 reboot && echo Resetting USB on
> > > > reboot... && usb reset && sleep 10; run distro_bootcmd"
> > > >
> > > > It is a hack, but... the system reliably reboots remotely now, and
> > > > that's the important part for now.
> > > >
> > > > Wayne
I did not modify this at my end. However, this is not required with
the above fix.

Thanks
-Anand
> > > >
> > > > On Thu, May 8, 2025 at 11:22 AM Ferass El Hafidi
> > > > <funderscore at postmarketos.org> wrote:
> > > > >
> > > > > On Wed May 7, 2025 at 1:03 PM UTC, Wayne Schroeder wrote:
> > > > > > It's hard for me to quantify if usb works in u-boot as I'm not loading
> > > > > > off of any usb storage devices.  It certainly never lets me use the
> > > > > > keyboard to abort auto boot, and never has.  On reboot, to reliably
> > > > >
> > > > > You can send bytes via UART to abort boot, if you happen to have a UART
> > > > > adapter around.
> > > >
> > > Can you test this series to see if this resolves the issue?
> > >
> > > https://patchwork.ozlabs.org/project/uboot/list/?series=456088
> > >
> > > Thanks
> > > -Anand
> > >
> > > > _______________________________________________
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