arm64: dts: renesas: ulcb-kf: enable USB2 PHY of channel 0

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.barinov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
index 657ad10..48a2e8f 100644 (file)
--- 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";
 };