Am 2014-04-30 23:09, schrieb Stephen Warren: > From: Stephen Warren <swar...@nvidia.com> > > The TRM for Tegra30 and later all state that USBMODE_CM_HC must be set > before writing to hostpc1_devlc to select which PHY to use for a USB > controller. However, neither init_{utmi,ulpi}_usb_controller() do this > today, so the register writes they perform for PHY selection do not > work. > > For the UTMI case, this was hacked around in commit 7e44d9320ed4 "ARM: > Tegra: USB: EHCI: Add support for Tegra30/Tegra114" by adding code to > ehci_hcd_init() which sets USBMODE_CM_HC and duplicates the PHY > selection register write. This code doesn't cover the ULPI case, so I > wouldn't be surprised if ULPI doesn't work with the current code, unless > the ordering requirement only ends up being an issue in HW for UTMI not > ULPI.
On Toradex Colibri T30, all USB, including USB2, are using the UTMI phy. I successfully tested this patchset on the Colibri T30 module (not yet in mainline U-Boot). Tested-by <ste...@agner.ch> -- Stefan _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot