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Commit b34e96bd authored by Boris Brezillon's avatar Boris Brezillon Committed by Nicolas Ferre
Browse files

USB: atmel: update DT bindings documentation 



Add documentation for the missing clocks, clock-names, reg and interrupts
properties.

Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
parent 441cf98a

Documentation/devicetree/bindings/usb/atmel-usb.txt

+25 −0
Original line number Diff line number Diff line
@@ -5,6 +5,13 @@ OHCI 
Required properties:

 - compatible: Should be "atmel,at91rm9200-ohci" for USB controllers

   used in host mode.

 - reg: Address and length of the register set for the device

 - interrupts: Should contain ehci interrupt

 - clocks: Should reference the peripheral, host and system clocks

 - clock-names: Should contains two strings

		"ohci_clk" for the peripheral clock

		"hclk" for the host clock

		"uhpck" for the system clock

 - num-ports: Number of ports.

 - atmel,vbus-gpio: If present, specifies a gpio that needs to be

   activated for the bus to be powered.
@@ -14,6 +21,8 @@ Required properties: 
usb0: ohci@00500000 {

	compatible = "atmel,at91rm9200-ohci", "usb-ohci";

	reg = <0x00500000 0x100000>;

	clocks = <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;

	clock-names = "ohci_clk", "hclk", "uhpck";

	interrupts = <20 4>;

	num-ports = <2>;

};
@@ -23,11 +32,19 @@ EHCI 
Required properties:

 - compatible: Should be "atmel,at91sam9g45-ehci" for USB controllers

   used in host mode.

 - reg: Address and length of the register set for the device

 - interrupts: Should contain ehci interrupt

 - clocks: Should reference the peripheral and the UTMI clocks

 - clock-names: Should contains two strings

		"ehci_clk" for the peripheral clock

		"usb_clk" for the UTMI clock



usb1: ehci@00800000 {

	compatible = "atmel,at91sam9g45-ehci", "usb-ehci";

	reg = <0x00800000 0x100000>;

	interrupts = <22 4>;

	clocks = <&utmi>, <&uhphs_clk>;

	clock-names = "usb_clk", "ehci_clk";

};



AT91 USB device controller
@@ -53,6 +70,8 @@ usb1: gadget@fffa4000 { 
	compatible = "atmel,at91rm9200-udc";

	reg = <0xfffa4000 0x4000>;

	interrupts = <10 4>;

	clocks = <&udc_clk>, <&udpck>;

	clock-names = "pclk", "hclk";

	atmel,vbus-gpio = <&pioC 5 0>;

};
@@ -65,6 +84,10 @@ Required properties: 
	       "sama5d3-udc"

 - reg: Address and length of the register set for the device

 - interrupts: Should contain usba interrupt

 - clocks: Should reference the peripheral and host clocks

 - clock-names: Should contains two strings

		"pclk" for the peripheral clock

		"hclk" for the host clock

 - ep childnode: To specify the number of endpoints and their properties.



Optional properties:
@@ -86,6 +109,8 @@ usb2: gadget@fff78000 { 
	reg = <0x00600000 0x80000

	       0xfff78000 0x400>;

	interrupts = <27 4 0>;

	clocks = <&utmi>, <&udphs_clk>;

	clock-names = "hclk", "pclk";

	atmel,vbus-gpio = <&pioB 19 0>;



	ep0 {