0001 # SPDX-License-Identifier: GPL-2.0
0002
0003 config USB_DWC2
0004 tristate "DesignWare USB2 DRD Core Support"
0005 depends on HAS_DMA
0006 depends on USB || USB_GADGET
0007 depends on HAS_IOMEM
0008 select USB_ROLE_SWITCH
0009 help
0010 Say Y here if your system has a Dual Role Hi-Speed USB
0011 controller based on the DesignWare HSOTG IP Core.
0012
0013 For host mode, if you choose to build the driver as dynamically
0014 linked modules, the core module will be called dwc2.ko, the PCI
0015 bus interface module (if you have a PCI bus system) will be
0016 called dwc2_pci.ko, and the platform interface module (for
0017 controllers directly connected to the CPU) will be called
0018 dwc2_platform.ko. For all modes(host, gadget and dual-role), there
0019 will be an additional module named dwc2.ko.
0020
0021 if USB_DWC2
0022
0023 choice
0024 bool "DWC2 Mode Selection"
0025 default USB_DWC2_DUAL_ROLE if (USB && USB_GADGET)
0026 default USB_DWC2_HOST if (USB && !USB_GADGET)
0027 default USB_DWC2_PERIPHERAL if (!USB && USB_GADGET)
0028
0029 config USB_DWC2_HOST
0030 bool "Host only mode"
0031 depends on USB=y || (USB_DWC2=m && USB)
0032 help
0033 The Designware USB2.0 high-speed host controller
0034 integrated into many SoCs. Select this option if you want the
0035 driver to operate in Host-only mode.
0036
0037 comment "Gadget/Dual-role mode requires USB Gadget support to be enabled"
0038
0039 config USB_DWC2_PERIPHERAL
0040 bool "Gadget only mode"
0041 depends on USB_GADGET=y || USB_GADGET=USB_DWC2
0042 help
0043 The Designware USB2.0 high-speed gadget controller
0044 integrated into many SoCs. Select this option if you want the
0045 driver to operate in Peripheral-only mode. This option requires
0046 USB_GADGET to be enabled.
0047
0048 config USB_DWC2_DUAL_ROLE
0049 bool "Dual Role mode"
0050 depends on (USB=y && USB_GADGET=y) || (USB_DWC2=m && USB && USB_GADGET)
0051 help
0052 Select this option if you want the driver to work in a dual-role
0053 mode. In this mode both host and gadget features are enabled, and
0054 the role will be determined by the cable that gets plugged-in. This
0055 option requires USB_GADGET to be enabled.
0056 endchoice
0057
0058 config USB_DWC2_PCI
0059 tristate "DWC2 PCI"
0060 depends on USB_PCI
0061 depends on USB_GADGET || !USB_GADGET
0062 select NOP_USB_XCEIV
0063 help
0064 The Designware USB2.0 PCI interface module for controllers
0065 connected to a PCI bus.
0066
0067 config USB_DWC2_DEBUG
0068 bool "Enable Debugging Messages"
0069 help
0070 Say Y here to enable debugging messages in the DWC2 Driver.
0071
0072 config USB_DWC2_VERBOSE
0073 bool "Enable Verbose Debugging Messages"
0074 depends on USB_DWC2_DEBUG
0075 help
0076 Say Y here to enable verbose debugging messages in the DWC2 Driver.
0077 WARNING: Enabling this will quickly fill your message log.
0078 If in doubt, say N.
0079
0080 config USB_DWC2_TRACK_MISSED_SOFS
0081 bool "Enable Missed SOF Tracking"
0082 help
0083 Say Y here to enable logging of missed SOF events to the dmesg log.
0084 WARNING: This feature is still experimental.
0085 If in doubt, say N.
0086
0087 config USB_DWC2_DEBUG_PERIODIC
0088 bool "Enable Debugging Messages For Periodic Transfers"
0089 depends on USB_DWC2_DEBUG || USB_DWC2_VERBOSE
0090 default y
0091 help
0092 Say N here to disable (verbose) debugging messages to be
0093 logged for periodic transfers. This allows better debugging of
0094 non-periodic transfers, but of course the debug logs will be
0095 incomplete. Note that this also disables some debug messages
0096 for which the transfer type cannot be deduced.
0097 endif
