Allwinner H3 have a its USB PHY0 routed to two USB controllers: one is a MUSB controller, which can work in peripheral mode, but works badly in host mode (several hardware will fail on the MUSB controller, even connect one MUSB controller in peripheral mode to another one in host mode cannot work); the other is a pair of EHCI/OHCI controller, which can work only in host mode, but have better compatibillity. The route is controlled in a register, which we have set it to HCI only when we do not know about it well. Add support to route to the best controller according to current USB mode (host/peripheral). Note: Currently even if hardware only support hostmode, we should still enable the MUSB controller, as it controls the USB mode. (Some this kind of hardware can also work in peripheral mode by settings in the sysfs node of MUSB, then connect it to another host via a USB Type-A to Type-A cable.) Patch 1 changes the device tree binding to include the "pmu0" for HCI pair. Patch 2 adds support for auto routing of PHY0. It's currently only enabled on H3, but it's easy to extend it to other SoCs which feature this route control. Patch 3 adds necessary device tree nodes to the H3 DTSI file. Note: The phy is not bind for OHCI/EHCI0, as OHCI/EHCI drivers will keep the VBUS on. Only MUSB driver can properly handle a dual-role PHY. Patch 4 enables USB OTG functionality on Orange Pi One board, which is the only H3 board I have that have proper OTG function. It's easy to enable OTG on other boards with their schematics. Patch 5 enables USB OTG functionality on Orange Pi Zero board, as the board cannot output power on Vbus, I only enabled peripheral mode by default. The USB PHY on V3s/A64 SoCs also feature this capability, and it will be soon enabled on these SoCs after this patchset is merged. Icenowy Zheng (5): dt: bindings: add pmu0 regs for USB PHYs on Allwinner H3/V3s/A64 phy: sun4i-usb: support automatically switch PHY0 route to MUSB/HCI ARM: dts: sun8i: h3: add usb_otg and OHCI/EHCI for usbc0 on H3 ARM: dts: sun8i: h3: enable USB OTG on Orange Pi One ARM: dts: sun8i: h2+: enable USB OTG for Orange Pi Zero board .../devicetree/bindings/phy/sun4i-usb-phy.txt | 1 + arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts | 14 ++++++ arch/arm/boot/dts/sun8i-h3-orangepi-one.dts | 22 +++++++++- arch/arm/boot/dts/sun8i-h3.dtsi | 32 ++++++++++++++ drivers/phy/phy-sun4i-usb.c | 50 ++++++++++++++-------- 5 files changed, 101 insertions(+), 18 deletions(-) -- 2.11.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-arm-kernel