Am Montag, den 20.08.2012, 12:09 -0600 schrieb Stephen Warren:
On 08/19/2012 10:08 AM, Lucas Stach wrote:
With this series we are able to initialize USB controllers using an external ULPI phy AKA USB2 on Tegra 2 devices.
This was tested to work on a Toradex Colibri T20 board, where USB2 is used to access the ASIX ethernet chipset. Testing was done with "tegra20: usb: rework set_host_mode" applied. I did not spot any regressions on the UTMI ports.
Patchset is based on top of u-boot-tegra/next
Hmmm. I tried testing this on my local branch on Harmony, which has all the patches necessary for multiple USB ports to work, and indeed they do on Seaboard. However, this series (plus some Harmony-specific config and .dts changes) didn't cause the ULPI port to work:-( Any idea why?
Could you try the attached hack and report back? If it doesn't help please build with DEBUG defined in arch/arm/cpu/armv7/tegra20/usb.c drivers/usb/host/ehci-hcd.c and provide me the output of the usb start command.
Thanks, Lucas
diff --git a/arch/arm/cpu/armv7/tegra20/usb.c b/arch/arm/cpu/armv7/tegra20/usb.c index 2ae1244..4c85685 100644 --- a/arch/arm/cpu/armv7/tegra20/usb.c +++ b/arch/arm/cpu/armv7/tegra20/usb.c @@ -367,7 +367,7 @@ static int init_ulpi_usb_controller(struct fdt_usb *config, }
ulpi_write(&ulpi_vp, &ulpi_reg->iface_ctrl_set, ULPI_IFACE_PASSTHRU); - ulpi_write(&ulpi_vp, &ulpi_reg->otg_ctrl_set, ULPI_OTG_EXTVBUSIND); + ulpi_write(&ulpi_vp, &ulpi_reg->otg_ctrl_set, ULPI_OTG_DRVVBUS|ULPI_OTG_DRVVBUS_EXT|ULPI_OTG_EXTVBUSIND);
/* enable wakeup events */ setbits_le32(&usbctlr->port_sc1, WKCN | WKDS | WKOC);