[PATCH 2/3] ARM: dts: sti: Add st-dwc3 devicetree bindings documentation
From: Peter Griffin <hidden>
Date: 2014-07-04 11:14:27
Also in:
linux-arm-kernel, linux-omap, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest, usb subsystem · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Greg Kroah-Hartman
This patch documents the device tree documentation required for the ST usb3 controller glue layer found in STiH407 devices. Signed-off-by: Giuseppe Cavallaro <redacted> Signed-off-by: Peter Griffin <redacted> --- Documentation/devicetree/bindings/usb/dwc3-st.txt | 58 +++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/dwc3-st.txt
diff --git a/Documentation/devicetree/bindings/usb/dwc3-st.txt b/Documentation/devicetree/bindings/usb/dwc3-st.txt
new file mode 100644
index 0000000..f14e5da
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/dwc3-st.txt@@ -0,0 +1,58 @@ +ST DWC3 glue logic + +This file documents the parameters for the dwc3-st driver. +This driver provides the glue logic to use the dwc3 on STiH407 based platforms. + +Required properties: + - compatible : must be "st,stih407-dwc3" + - reg : glue logic base address and USB syscfg ctrl register offest + - reg-names : Should be "reg-glue" and "syscfg-reg". + - st,syscon : should be phandle to system configuration node which + encompases the glue registers. + - resets : phandle pointing to the system powerdown controller +See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt +See: Documentation/devicetree/bindings/reset/reset.txt + + - #address-cells, #size-cells : should be '1' if the device has sub-nodes + with 'reg' property. + + - pinctl-names : A pinctrl state named "default" must be defined. +See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt. + + - pinctrl-0 : Pin control group +See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt. + + - ranges: allows valid 1:1 translation between child's address space and + parent's address space. + +Optional properties: + - st,dwc3-drd-device: to program the HC as "device" (static setup) + +Sub-nodes: +The dwc3 core should be added as subnode to ST DWC3 glue as shown in the +example below. The DT binding details of dwc3 can be found in: +Documentation/devicetree/bindings/usb/dwc3.txt + +Example: + +st_dwc3: dwc3@8f94000 { + status = "disabled"; + compatible = "st,stih407-dwc3"; + reg = <0x08f94000 0x1000>, <0x110 0x4>; + reg-names = "reg-glue", "syscfg-reg"; + st,syscfg = <&syscfg_core>; + resets = <&powerdown STIH407_USB3_POWERDOWN>; + #address-cells = <1>; + #size-cells = <1>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_usb3>; + ranges; + + dwc3: dwc3@9900000 { + compatible = "synopsys,dwc3"; + reg = <0x09900000 0x100000>; + interrupts = <GIC_SPI 155 IRQ_TYPE_NONE>; + + usb-phy = <&usb2_phy>, <&usb3_phy>; + }; +};
--
1.9.1
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