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Documentation / devicetree / bindings / usb / dwc3.txt




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Based on kernel version 4.13.3. Page generated on 2017-09-23 13:55 EST.

1	synopsys DWC3 CORE
2	
3	DWC3- USB3 CONTROLLER. Complies to the generic USB binding properties
4	      as described in 'usb/generic.txt'
5	
6	Required properties:
7	 - compatible: must be "snps,dwc3"
8	 - reg : Address and length of the register set for the device
9	 - interrupts: Interrupts used by the dwc3 controller.
10	
11	Optional properties:
12	 - usb-phy : array of phandle for the PHY device.  The first element
13	   in the array is expected to be a handle to the USB2/HS PHY and
14	   the second element is expected to be a handle to the USB3/SS PHY
15	 - phys: from the *Generic PHY* bindings
16	 - phy-names: from the *Generic PHY* bindings; supported names are "usb2-phy"
17		or "usb3-phy".
18	 - snps,usb3_lpm_capable: determines if platform is USB3 LPM capable
19	 - snps,disable_scramble_quirk: true when SW should disable data scrambling.
20		Only really useful for FPGA builds.
21	 - snps,has-lpm-erratum: true when DWC3 was configured with LPM Erratum enabled
22	 - snps,lpm-nyet-threshold: LPM NYET threshold
23	 - snps,u2exit_lfps_quirk: set if we want to enable u2exit lfps quirk
24	 - snps,u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk
25	 - snps,req_p1p2p3_quirk: when set, the core will always request for
26				P1/P2/P3 transition sequence.
27	 - snps,del_p1p2p3_quirk: when set core will delay P1/P2/P3 until a certain
28				amount of 8B10B errors occur.
29	 - snps,del_phy_power_chg_quirk: when set core will delay PHY power change
30				from P0 to P1/P2/P3.
31	 - snps,lfps_filter_quirk: when set core will filter LFPS reception.
32	 - snps,rx_detect_poll_quirk: when set core will disable a 400us delay to start
33				Polling LFPS after RX.Detect.
34	 - snps,tx_de_emphasis_quirk: when set core will set Tx de-emphasis value.
35	 - snps,tx_de_emphasis: the value driven to the PHY is controlled by the
36				LTSSM during USB3 Compliance mode.
37	 - snps,dis_u3_susphy_quirk: when set core will disable USB3 suspend phy.
38	 - snps,dis_u2_susphy_quirk: when set core will disable USB2 suspend phy.
39	 - snps,dis_enblslpm_quirk: when set clears the enblslpm in GUSB2PHYCFG,
40				disabling the suspend signal to the PHY.
41	 - snps,dis_rxdet_inp3_quirk: when set core will disable receiver detection
42				in PHY P3 power state.
43	 - snps,dis-u2-freeclk-exists-quirk: when set, clear the u2_freeclk_exists
44				in GUSB2PHYCFG, specify that USB2 PHY doesn't provide
45				a free-running PHY clock.
46	 - snps,dis-del-phy-power-chg-quirk: when set core will change PHY power
47				from P0 to P1/P2/P3 without delay.
48	 - snps,dis-tx-ipgap-linecheck-quirk: when set, disable u2mac linestate check
49				during HS transmit.
50	 - snps,is-utmi-l1-suspend: true when DWC3 asserts output signal
51				utmi_l1_suspend_n, false when asserts utmi_sleep_n
52	 - snps,hird-threshold: HIRD threshold
53	 - snps,hsphy_interface: High-Speed PHY interface selection between "utmi" for
54	   UTMI+ and "ulpi" for ULPI when the DWC_USB3_HSPHY_INTERFACE has value 3.
55	 - snps,quirk-frame-length-adjustment: Value for GFLADJ_30MHZ field of GFLADJ
56		register for post-silicon frame length adjustment when the
57		fladj_30mhz_sdbnd signal is invalid or incorrect.
58	
59	 - <DEPRECATED> tx-fifo-resize: determines if the FIFO *has* to be reallocated.
60	
61	 - in addition all properties from usb-xhci.txt from the current directory are
62	   supported as well
63	
64	
65	This is usually a subnode to DWC3 glue to which it is connected.
66	
67	dwc3@4a030000 {
68		compatible = "snps,dwc3";
69		reg = <0x4a030000 0xcfff>;
70		interrupts = <0 92 4>
71		usb-phy = <&usb2_phy>, <&usb3,phy>;
72	};
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