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| author | Anton Vorontsov <avorontsov@mvista.com> | 2010-04-22 19:44:47 +0400 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-05-17 10:55:29 -0500 |
| commit | 0aedc0085146131da5b04476aab21834b1403b31 (patch) | |
| tree | 79fa7dabc1332455a21c91f429c4e7a5d0393ec5 /arch/powerpc/boot/dts/mpc8379_rdb.dts | |
| parent | 7541ef78c3b83e906b580f005207000545cf770a (diff) | |
powerpc/85xx: Fix P1020RDB boot hang due USB2
Since USB2 is shared with local bus, either local bus or USB2
should be disabled. By default U-Boot enables local bus, so we
have to disable USB2, otherwise kernel hangs:
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller
fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1
fsl-ehci fsl-ehci.0: irq 28, io base 0xffe22000
fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller
fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2
<hangs here>
Note that U-Boot doesn't clear 'status' property when it enables
USB2, so we have to comment out the whole node.
To enable USB2, one can issue
'setenv hwconfig usb2:dr_mode=<host|peripheral>' command at the
U-Boot prompt.
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/boot/dts/mpc8379_rdb.dts')
0 files changed, 0 insertions, 0 deletions