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Subject[PATCH v2 2/3] usb: host: st-hcd: Add st-hcd devicetree bindings documentation.
Date
This patch documents the device tree documentation required for
the ST HCD controller found in STMicroelectronics SoCs.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Documentation/devicetree/bindings/usb/st-hcd.txt | 49 ++++++++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/st-hcd.txt

diff --git a/Documentation/devicetree/bindings/usb/st-hcd.txt b/Documentation/devicetree/bindings/usb/st-hcd.txt
new file mode 100644
index 0000000..b963be2
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/st-hcd.txt
@@ -0,0 +1,49 @@
+ST HCD (Host Controller Driver) for USB 2.0 and 1.1
+
+The device node has the following properties.
+
+Required properties:
+ - compatible : must be "st,usb-300x"
+ - reg : physical base addresses of the controller and length of memory mapped
+ region
+ - reg-names : names associated to the reg defines above, should be "ehci" and "ohci"
+ - interrupts : interrupt numbers to the cpu
+ - interrupt-names : should be "ehci" and "ohci"
+
+ - pinctrl-names : a pinctrl state named "default" must be defined
+- pinctrl-0 : phandle referencing pin configuration of the USB controller
+See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt
+
+ - clocks : phandle list of usb clocks.
+ - clock-names : should be "ic" for interconnect clock and "ohci" for the 48MHz clock
+See: Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+ - resets : phandle to the powerdown and reset controller for the USB IP
+ - reset-names : should be "powerdown" and "softreset".
+See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt
+See: Documentation/devicetree/bindings/reset/reset.txt
+
+Example:
+
+usb0: usb@fe100000 {
+ compatible = "st,usb-300x";
+ reg = <0xfe1ffc00 0x100>,
+ <0xfe1ffe00 0x100>;
+ reg-names = "ohci", "ehci";
+
+ interrupts = <GIC_SPI 148 IRQ_TYPE_NONE>,
+ <GIC_SPI 149 IRQ_TYPE_NONE>;
+ interrupt-names = "ehci", "ohci";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb0>;
+ clocks = <&clk_s_a1_ls CLK_ICN_IF_2>,
+ <&clockgen_b0 0>;
+ clock-names = "ic", "ohci";
+
+ resets = <&powerdown STIH416_USB0_POWERDOWN>,
+ <&softreset STIH416_USB0_SOFTRESET>;
+ reset-names = "powerdown", "softreset";
+
+ phys = <&usb2_phy>;
+ phy-names = "usb2-phy";
+};
--
1.9.1


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