This patch makes tegra usb drivers a bit more flexible by passing xcvr setup values from device tree.
By default on tegra xcvr setup of usb phy is performed with values taken form controller fuses. So by default nvidia,xcvr-setup-use-fuses dts flag is set and hw is set accordingly.
In most cases default setup of USB works perfectly fine, but for some devices (like ASUS TF201) standard xcvr fuse values do not fit which causes some usb lines (in TF201 case dock USB port) to break. To fix this xcvr-setup value can be passed from device tree.
--- Change from v1 - removed xcvr-setup if nvidia,xcvr-setup-use-fuses is enabled ---
Svyatoslav Ryhel (1): usb: host: tegra: implement dts based xcvr setup
drivers/usb/host/ehci-tegra.c | 48 +++++++++++++++++++++++++++++++---- 1 file changed, 43 insertions(+), 5 deletions(-)