Currently the DWC3 driver supports only single port controller which requires at most two PHYs ie HS and SS PHYs. There are SoCs that has DWC3 controller with multiple ports that can operate in host mode. Some of the port supports both SS+HS and other port supports only HS mode. This change refactors the PHY logic to support multiport controller. The patches have gone through basic sanity only. For any multiport controller we would define a new node "multiport" inside dwc3 and then add subsequent "mport" nodes inside it for individual ports that it supports. Now each individual "mport" defines the PHYs that it supports. Looking for comments/feedback on the device tree bindings. Once the bindings are locked, we can further factor the code. e.g. Consider a Dual port controller where each port supports HS+SS multiport { mp_1: mport@1 { usb-phys = <usb2_phy0>, <usb3_phy0>; }; mp_2: mport@2 { usb-phys = <usb2_phy1>, <usb3_phy1>; }; }; Harsh Agarwal (2): dt-bindings: usb: dwc3: Add support for multiport related properties usb: dwc3: Refactor PHY logic to support Multiport Controller .../devicetree/bindings/usb/snps,dwc3.yaml | 55 +++++ drivers/usb/dwc3/core.c | 259 ++++++++++++++++----- drivers/usb/dwc3/core.h | 8 +- drivers/usb/dwc3/drd.c | 8 +- drivers/usb/dwc3/gadget.c | 4 +- 5 files changed, 264 insertions(+), 70 deletions(-) -- 2.7.4