Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-02 09:01:34 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
This patch documents the device tree bindings required for the
ehci on-chip controller found in ST consumer electronics SoC's.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Griffin 2014-09-08 13:04:46 +01:00 committed by Greg Kroah-Hartman
parent d115837259
commit fee1dc0282
1 changed files with 39 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
Documentation/devicetree/bindings/usb/ehci-st.txt Normal file
View File

@ -0,0 +1,39 @@
ST USB EHCI controller
Required properties:
- compatible : must be "st,st-ehci-300x"
- reg : physical base addresses of the controller and length of memory mapped
region
- interrupts : one EHCI interrupt should be described here
- 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 "clk48"
See: Documentation/devicetree/bindings/clock/clock-bindings.txt
- phys : phandle for the PHY device
- phy-names : should be "usb"
- resets : phandle + reset specifier pairs to the powerdown and softreset lines
of 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:
ehci1: usb@0xfe203e00 {
compatible = "st,st-ehci-300x";
reg = <0xfe203e00 0x100>;
interrupts = <GIC_SPI 148 IRQ_TYPE_NONE>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usb1>;
clocks = <&clk_s_a1_ls 0>;
phys = <&usb2_phy>;
phy-names = "usb";
status = "okay";
resets = <&powerdown STIH416_USB1_POWERDOWN>,
<&softreset STIH416_USB1_SOFTRESET>;
reset-names = "power", "softreset";
};