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Subject[PATCH v3 2/4] phy: phy-stih407-usb: Add dt documentation for USB picophy found on stih407 SoC family
Date
This patch adds the dt documentation for the usb picophy found on stih407 SoC family
available from STMicroelectronics.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
.../devicetree/bindings/phy/phy-stih407-usb.txt | 30 ++++++++++++++++++++++
1 file changed, 30 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/phy-stih407-usb.txt

diff --git a/Documentation/devicetree/bindings/phy/phy-stih407-usb.txt b/Documentation/devicetree/bindings/phy/phy-stih407-usb.txt
new file mode 100644
index 0000000..1ef8228
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-stih407-usb.txt
@@ -0,0 +1,30 @@
+ST STiH407 USB PHY controller
+
+This file documents the dt bindings for the usb picoPHY driver which is the PHY for both USB2 and USB3
+host controllers (when controlling usb2/1.1 devices) available on STiH407 SoC family from STMicroelectronics.
+
+Required properties:
+- compatible : should be "st,stih407-usb2-phy"
+- reg : contain the offset and length of the system configuration registers
+ used as glue logic to control & parameter phy
+- reg-names : the names of the system configuration registers in "reg", should be "param" and "reg"
+- st,syscfg : sysconfig register to manage phy parameter at driver level
+- resets : list of phandle and reset specifier pairs. There should be two entries, one
+ for the whole phy and one for the port
+- reset-names : list of reset signal names. Should be "global" and "port"
+See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt
+See: Documentation/devicetree/bindings/reset/reset.txt
+
+Example:
+
+usb2_picophy0: usbpicophy@f8 {
+ compatible = "st,stih407-usb2-phy";
+ reg = <0xf8 0x04>, /* syscfg 5062 */
+ <0xf4 0x04>; /* syscfg 5061 */
+ reg-names = "param", "ctrl";
+ #phy-cells = <0>;
+ st,syscfg = <&syscfg_core>;
+ resets = <&softreset STIH407_PICOPHY_SOFTRESET>,
+ <&picophyreset STIH407_PICOPHY0_RESET>;
+ reset-names = "global", "port";
+};
--
1.9.1


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