On 10/23/2015 01:28 PM, Douglas Anderson wrote: > The "host1" port (AKA the dwc2 port that isn't the OTG port) on rk3288 > has a hardware errata that causes everything to get confused when we get > a remote wakeup. It appears that the "port reset" bit that's in the USB > phy (located in the rk3288 GRF) fixes things up and appears safe to do. > > This series of patches exports the "port reset" from the PHY and then > hooks it up to dwc2 through a quirk. > > I've tested this series atop a bit of a conglomeration of Heiko's github > "somewhat stable" branch (v4.3-rc3-876-g6509232) but with Greg KH's > usb-next merged in. > > These patches currently conflict with patches that I posted previously > to enable USB wakeup from S3, specifically: > * https://patchwork.kernel.org/patch/6727081/ > * https://patchwork.kernel.org/patch/6727121/ > ...those patches no longer apply anyway, so presumably they need to be > reposted and I can do so later atop these patches. > > > Douglas Anderson (4): > phy: rockchip-usb: Support the PHY's "port reset" > usb: dwc2: optionally assert phy "port reset" when waking up > ARM: dts: rockchip: Enable the USB phys as reset providers on rk3288 > ARM: dts: rockchip: Point rk3288 dwc2 usb at phy port reset > > .../devicetree/bindings/phy/rockchip-usb-phy.txt | 6 ++ > Documentation/devicetree/bindings/usb/dwc2.txt | 7 ++ > arch/arm/boot/dts/rk3288.dtsi | 8 +++ > drivers/phy/phy-rockchip-usb.c | 74 ++++++++++++++++++++++ > drivers/usb/dwc2/core.h | 5 ++ > drivers/usb/dwc2/core_intr.c | 7 ++ > drivers/usb/dwc2/platform.c | 13 ++++ > 7 files changed, 120 insertions(+) A DT reset controller seems like a bit of an overkill here. I think this would be much more simple if we just add a phy reset hook to the phy subsystem. Rob > -- 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
