The DWC3-exynos eXtensible host controller present on Exynos5420 SoC is quirky. The PHY serving this controller operates at High-Speed by default, so it detects even Super-speed devices as high-speed ones. This PHY needs to be tuned for its Tx LOS levels and Boost levels. In this patch-set, we are registering a quirk for this DWC3-Exynos controller with XHCI, so that once after xhci_reset(), the controller can call to tune the associated PHY and achieve the SuperSpeed. These patches are based on new USB 3.0 phy driver for Exynos SoC series. [1] [1] Add Exynos5 USB 3.0 phy driver based on generic PHY framework http://lwn.net/Articles/575586/ Vivek Gautam (4): phy: Add provision for tuning phy. xhci: Add quirk for DWC3-Exynos controller xhci: Tune PHY for the DWC3-Exynos host controller phy-exynos-usb3: Fine tune LOS levels for exynos5420 drivers/phy/phy-core.c | 20 +++++++ drivers/phy/phy-exynos5-usb3.c | 107 ++++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc3/host.c | 7 +++ drivers/usb/host/xhci-plat.c | 62 ++++++++++++++++++++++- drivers/usb/host/xhci.h | 1 + include/linux/phy/phy.h | 7 +++ include/linux/usb/hcd.h | 1 + 7 files changed, 203 insertions(+), 2 deletions(-) -- 1.7.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
