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545d64a46c
Add documentation for device-tree binding of arm PXA 27x udc (usb device) driver. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Cc: devicetree@vger.kernel.org Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
53 lines
1.5 KiB
Text
53 lines
1.5 KiB
Text
PXA USB controllers
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OHCI
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Required properties:
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- compatible: Should be "marvell,pxa-ohci" for USB controllers
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used in host mode.
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Optional properties:
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- "marvell,enable-port1", "marvell,enable-port2", "marvell,enable-port3"
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If present, enables the appropriate USB port of the controller.
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- "marvell,port-mode" selects the mode of the ports:
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1 = PMM_NPS_MODE
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2 = PMM_GLOBAL_MODE
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3 = PMM_PERPORT_MODE
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- "marvell,power-sense-low" - power sense pin is low-active.
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- "marvell,power-control-low" - power control pin is low-active.
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- "marvell,no-oc-protection" - disable over-current protection.
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- "marvell,oc-mode-perport" - enable per-port over-current protection.
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- "marvell,power_on_delay" Power On to Power Good time - in ms.
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Example:
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usb0: ohci@4c000000 {
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compatible = "marvell,pxa-ohci", "usb-ohci";
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reg = <0x4c000000 0x100000>;
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interrupts = <18>;
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marvell,enable-port1;
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marvell,port-mode = <2>; /* PMM_GLOBAL_MODE */
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};
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UDC
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Required properties:
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- compatible: Should be "marvell,pxa270-udc" for USB controllers
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used in device mode.
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- reg: usb device MMIO address space
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- interrupts: single interrupt generated by the UDC IP
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- clocks: input clock of the UDC IP (see clock-bindings.txt)
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Optional properties:
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- gpios:
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- gpio activated to control the USB D+ pullup (see gpio.txt)
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Example:
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pxa27x_udc: udc@40600000 {
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compatible = "marvell,pxa270-udc";
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reg = <0x40600000 0x10000>;
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interrupts = <11>;
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clocks = <&pxa2xx_clks 11>;
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gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
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};
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