| Message ID | 20100422154447.GA30785@oksana.dev.rtsoft.ru (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Commit | 0aedc0085146131da5b04476aab21834b1403b31 |
| Delegated to: | Kumar Gala |
| Headers | show |
On Apr 22, 2010, at 10:44 AM, Anton Vorontsov wrote: > 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> > --- > arch/powerpc/boot/dts/p1020rdb.dts | 6 ++++++ > 1 files changed, 6 insertions(+), 0 deletions(-) applied to next - k
diff --git a/arch/powerpc/boot/dts/p1020rdb.dts b/arch/powerpc/boot/dts/p1020rdb.dts index df52690..865795e 100644 --- a/arch/powerpc/boot/dts/p1020rdb.dts +++ b/arch/powerpc/boot/dts/p1020rdb.dts @@ -356,6 +356,11 @@ phy_type = "ulpi"; }; + /* USB2 is shared with localbus, so it must be disabled + by default. We can't put 'status = "disabled";' here + since U-Boot doesn't clear the status property when + it enables USB2. OTOH, U-Boot does create a new node + when there isn't any. So, just comment it out. usb@23000 { #address-cells = <1>; #size-cells = <0>; @@ -365,6 +370,7 @@ interrupts = <46 0x2>; phy_type = "ulpi"; }; + */ sdhci@2e000 { compatible = "fsl,p1020-esdhc", "fsl,esdhc";
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> --- arch/powerpc/boot/dts/p1020rdb.dts | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-)