This supports USB2 PHY channel #0 on ULCB Kingfisher board
The dedicated USB0_PWEN pin is used to control CN13 VBUS source from U43
power supply.
MAX3355 can also provide VBUS, hence it should be disabled via OTG_OFFVBUSn
node coming from gpio expander TCA9539.
Set MAX3355 enabled using OTG_EXTLPn node to be able to read OTG ID of CN13.
Signed-off-by: Vladimir Barinov <vladimir.bari...@cogentembedded.com>
---
Changes in version 2:
- added gpio hogs for MAX3355 VBUS and SHDN
arch/arm64/boot/dts/renesas/ulcb-kf.dtsi | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
index 657ad10..48a2e8f 100644
--- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
@@ -67,6 +67,20 @@
output-high;
line-name = "HUB rst";
};
+
+ otg_offvbusn {
+ gpio-hog;
+ gpios = <8 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "OTG OFFVBUSn";
+ };
+
+ otg_extlpn {
+ gpio-hog;
+ gpios = <9 GPIO_ACTIVE_HIGH>;
+ output-high;
+ line-name = "OTG EXTLPn";
+ };
};
gpio_exp_75: gpio@75 {
@@ -154,6 +168,11 @@
groups = "scif1_data_b", "scif1_ctrl";
function = "scif1";
};
+
+ usb0_pins: usb0 {
+ groups = "usb0";
+ function = "usb0";
+ };
};
&scif1 {
@@ -164,6 +183,13 @@
status = "okay";
};
+&usb2_phy0 {
+ pinctrl-0 = <&usb0_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+};
+
&xhci0 {
status = "okay";
};
--
1.9.1
