[PATCH v4 3/3] arm64: dts: renesas: r9a09g047e57-smarc: Enable USB2.0 support

[Tommaso Merciai]

Enable USB2.0 support on the RZ/G3E EVK board. The USB1B_1A_HOST and
USB5_4_HOST connectors support host operation only, while USB0_OTG
supports both host and peripheral operation.

renesas-smarc2.dtsi is shared by all boards based on the RZ SMARC
Carrier II Board. USB2.0 is not yet supported on the RZ/G3L SMARC
EVK, so disable the common USB2.0 nodes in its board DTS until proper
support is added.

Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@xxxxxxxxxxxxxx>
---
v3->v4:
 - Drop usb21_pins.

v2->v3:
 - No changes just rebased on top of next-20260908.

v1->v2:
 - Disabled RZ/G3L common nodes from r9a08g046l48-smarc.dts in this way
   we can drop placeholder patch.
 - Update commit body.
 - Improved usb20_pins, usb21_pins comments.

 .../boot/dts/renesas/r9a08g046l48-smarc.dts   | 20 ++++++++++++
 .../boot/dts/renesas/r9a09g047e57-smarc.dts   | 31 +++++++++++++++++++
 .../boot/dts/renesas/renesas-smarc2.dtsi      | 25 +++++++++++++++
 3 files changed, 76 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts b/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts
index 5289efd1a430..ccd6e6394532 100644
--- a/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts
@@ -71,6 +71,18 @@ codec_dai: codec {
 #endif
 };
 
+&ehci0 {
+	status = "disabled";
+};
+
+&ehci1 {
+	status = "disabled";
+};
+
+&hsusb0 {
+	status = "disabled";
+};
+
 &i2c2 {
 	pinctrl-0 = <&i2c2_pins>;
 	pinctrl-names = "default";
@@ -122,6 +134,14 @@ &keys {
 #endif
 };
 
+&ohci0 {
+	status = "disabled";
+};
+
+&ohci1 {
+	status = "disabled";
+};
+
 &pinctrl {
 	audio_clk_pins: audio-clock {
 		pinmux = <RZG3L_PORT_PINMUX(H, 4, 6)>, /* AUDIO_CLK_B */
diff --git a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
index 14f5834082fa..095acb87c20c 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
@@ -301,6 +301,17 @@ sd1-data {
 		};
 	};
 
+	usb20_pins: usb20 {
+		ovc {
+			pinmux = <RZG3E_PORT_PINMUX(0, 0, 12)>; /* USB20_OVRCURN */
+			bias-pull-up;
+		};
+
+		vbus {
+			pinmux = <RZG3E_PORT_PINMUX(0, 1, 12)>; /* USB20_VBUSEN */
+		};
+	};
+
 	usb3_pins: usb3 {
 		pinmux = <RZG3E_PORT_PINMUX(4, 1, 12)>, /* USB30_VBUSEN */
 			 <RZG3E_PORT_PINMUX(4, 0, 12)>; /* USB30_OVRCURN */
@@ -397,6 +408,26 @@ &ssi4 {
 	shared-pin;
 };
 
+&usb20phyrst {
+	status = "okay";
+};
+
+&usb21phyrst {
+	status = "okay";
+};
+
+&usb2_phy0 {
+	pinctrl-0 = <&usb20_pins>;
+	pinctrl-names = "default";
+
+	vbus-supply = <&usb2_phy0_vbus_otg>;
+	status = "okay";
+};
+
+&usb2_phy1 {
+	status = "okay";
+};
+
 &usb3_phy {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi b/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
index 826a11ab93c7..234ca287ed28 100644
--- a/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
+++ b/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
@@ -84,11 +84,36 @@ &canfd {
 	status = "okay";
 };
 
+&ehci0 {
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&ehci1 {
+	dr_mode = "host";
+	status = "okay";
+};
+
+&hsusb0 {
+	dr_mode = "otg";
+	status = "okay";
+};
+
 &i2c0 {
 	status = "okay";
 	clock-frequency = <400000>;
 };
 
+&ohci0 {
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&ohci1 {
+	dr_mode = "host";
+	status = "okay";
+};
+
 &pcie {
 	status = "okay";
 };
-- 
2.54.0