Commit 554405d4 authored by Peter Griffin's avatar Peter Griffin Committed by Greg Kroah-Hartman

usb: host: ohci-st: Add ohci-st devicetree bindings documentation

This patch documents the device tree bindings required for
the ohci on-chip controller found in ST consumer electronics SoC's.
Signed-off-by: default avatarPeter Griffin <peter.griffin@linaro.org>
Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fee1dc02
ST USB OHCI controller
Required properties:
- compatible : must be "st,st-ohci-300x"
- reg : physical base addresses of the controller and length of memory mapped
region
- interrupts : one OHCI controller interrupt should be described here
- clocks : phandle list of usb clocks
- clock-names : should be "ic" for interconnect clock and "clk48"
See: Documentation/devicetree/bindings/clock/clock-bindings.txt
- phys : phandle for the PHY device
- phy-names : should be "usb"
- resets : phandle to the powerdown and reset controller for the USB IP
- reset-names : should be "power" and "softreset".
See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt
See: Documentation/devicetree/bindings/reset/reset.txt
Example:
ohci0: usb@0xfe1ffc00 {
compatible = "st,st-ohci-300x";
reg = <0xfe1ffc00 0x100>;
interrupts = <GIC_SPI 149 IRQ_TYPE_NONE>;
clocks = <&clk_s_a1_ls 0>,
<&clockgen_b0 0>;
clock-names = "ic", "clk48";
phys = <&usb2_phy>;
phy-names = "usb";
status = "okay";
resets = <&powerdown STIH416_USB0_POWERDOWN>,
<&softreset STIH416_USB0_SOFTRESET>;
reset-names = "power", "softreset";
};
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