Merge tag 'usb-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb (e4ee8b85) · Commits · 戴 / test

Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd

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+25 −0

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		What: /sys/bus/pci/drivers/xhci_hcd/.../dbc
		Date: June 2017
		Contact: Lu Baolu <baolu.lu@linux.intel.com>
		Description:
		xHCI compatible USB host controllers (i.e. super-speed
		USB3 controllers) are often implemented with the Debug
		Capability (DbC). It can present a debug device which
		is fully compliant with the USB framework and provides
		the equivalent of a very high performance full-duplex
		serial link for debug purpose.

		The DbC debug device shares a root port with xHCI host.
		When the DbC is enabled, the root port will be assigned
		to the Debug Capability. Otherwise, it will be assigned
		to xHCI.

		Writing "enable" to this attribute will enable the DbC
		functionality and the shared root port will be assigned
		to the DbC device. Writing "disable" to this attribute
		will disable the DbC functionality and the shared root
		port will roll back to the xHCI.

		Reading this attribute gives the state of the DbC. It
		can be one of the following states: disabled, enabled,
		initialized, connected, configured and stalled.

+2 −0

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		@@ -47,6 +47,8 @@ Optional properties:
		from P0 to P1/P2/P3 without delay.
		- snps,dis-tx-ipgap-linecheck-quirk: when set, disable u2mac linestate check
		during HS transmit.
		- snps,dis_metastability_quirk: when set, disable metastability workaround.
		CAUTION: use only if you are absolutely sure of it.
		- snps,is-utmi-l1-suspend: true when DWC3 asserts output signal
		utmi_l1_suspend_n, false when asserts utmi_sleep_n
		- snps,hird-threshold: HIRD threshold

+12 −6

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		@@ -35,10 +35,14 @@ Required properties:
		- phys : a list of phandle + phy specifier pairs

		Optional properties:
		- mediatek,wakeup-src : 1: ip sleep wakeup mode; 2: line state wakeup
		mode;
		- mediatek,syscon-wakeup : phandle to syscon used to access USB wakeup
		control register, it depends on "mediatek,wakeup-src".
		- wakeup-source : enable USB remote wakeup;
		- mediatek,syscon-wakeup : phandle to syscon used to access the register
		of the USB wakeup glue layer between xHCI and SPM; it depends on
		"wakeup-source", and has two arguments:
		- the first one : register base address of the glue layer in syscon;
		- the second one : hardware version of the glue layer
		- 1 : used by mt8173 etc
		- 2 : used by mt2712 etc
		- mediatek,u3p-dis-msk : mask to disable u3ports, bit0 for u3port0,
		bit1 for u3port1, ... etc;
		- vbus-supply : reference to the VBUS regulator;
		@@ -46,6 +50,7 @@ Optional properties:
		- pinctrl-names : a pinctrl state named "default" must be defined
		- pinctrl-0 : pin control group
		See: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
		- imod-interval-ns: default interrupt moderation interval is 5000ns

		Example:
		usb30: usb@11270000 {
		@@ -64,8 +69,9 @@ usb30: usb@11270000 {
		vusb33-supply = <&mt6397_vusb_reg>;
		vbus-supply = <&usb_p1_vbus>;
		usb3-lpm-capable;
		mediatek,syscon-wakeup = <&pericfg>;
		mediatek,wakeup-src = <1>;
		mediatek,syscon-wakeup = <&pericfg 0x400 1>;
		wakeup-source;
		imod-interval-ns = <10000>;
		};

		2nd: dual-role mode with xHCI driver

+10 −5

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		@@ -42,9 +42,14 @@ Optional properties:
		- enable-manual-drd : supports manual dual-role switch via debugfs; usually
		used when receptacle is TYPE-A and also wants to support dual-role
		mode.
		- mediatek,enable-wakeup : supports ip sleep wakeup used by host mode
		- mediatek,syscon-wakeup : phandle to syscon used to access USB wakeup
		control register, it depends on "mediatek,enable-wakeup".
		- wakeup-source: enable USB remote wakeup of host mode.
		- mediatek,syscon-wakeup : phandle to syscon used to access the register
		of the USB wakeup glue layer between SSUSB and SPM; it depends on
		"wakeup-source", and has two arguments:
		- the first one : register base address of the glue layer in syscon;
		- the second one : hardware version of the glue layer
		- 1 : used by mt8173 etc
		- 2 : used by mt2712 etc
		- mediatek,u3p-dis-msk : mask to disable u3ports, bit0 for u3port0,
		bit1 for u3port1, ... etc;

		@@ -71,8 +76,8 @@ ssusb: usb@11271000 {
		vbus-supply = <&usb_p0_vbus>;
		extcon = <&extcon_usb>;
		dr_mode = "otg";
		mediatek,enable-wakeup;
		mediatek,syscon-wakeup = <&pericfg>;
		wakeup-source;
		mediatek,syscon-wakeup = <&pericfg 0x400 1>;
		#address-cells = <2>;
		#size-cells = <2>;
		ranges;

+2 −0

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		@@ -13,8 +13,10 @@ Required properties:
		- "renesas,usbhs-r8a7795" for r8a7795 (R-Car H3) compatible device
		- "renesas,usbhs-r8a7796" for r8a7796 (R-Car M3-W) compatible device
		- "renesas,usbhs-r8a77995" for r8a77995 (R-Car D3) compatible device
		- "renesas,usbhs-r7s72100" for r7s72100 (RZ/A1) compatible device
		- "renesas,rcar-gen2-usbhs" for R-Car Gen2 or RZ/G1 compatible devices
		- "renesas,rcar-gen3-usbhs" for R-Car Gen3 compatible device
		- "renesas,rza1-usbhs" for RZ/A1 compatible device

		When compatible with the generic version, nodes must list the
		SoC-specific version corresponding to the platform first followed