CAINIAO CNIoT-CORE: switch USB 2.0 access from the Type-C port to the four contacts on the side of the host

Author: retro98boy

patch/kernel/archive/meson64-6.12/dt/meson-g12b-a311d-cainiao-cniot-core.dts

@@ -176,6 +176,23 @@
 		vin-supply = <&dc_in>;
 	};
 
+	/*
+	 * The Type-C port on the host is switched with the four USB contacts on the side of the host via GPIOA_14.
+	 * Since the Type-C port on the host is either used for power supply or blocked by the dock,
+	 * switching USB 2.0 access to the four contacts on the side of the host is a better choice.
+	 * To use the Type-C port for data transmission,
+	 * you only need to set GPIOA_14 in the node below to a high level.
+	 */
+	usb_switch: regulator-usb-switch {
+		compatible = "regulator-fixed";
+		enable-active-low;
+		gpio = <&gpio GPIOA_14 GPIO_ACTIVE_LOW>;
+		regulator-name = "usb_switch";
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&dc_in>;
+	};
+
 	vdd_amp: regulator-vdd-amp {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -558,7 +575,7 @@
 };
 
 &usb2_phy1 {
-	phy-supply = <&amp_power>;
+	phy-supply = <&usb_switch>;
 };
 
 &usb3_pcie_phy {

patch/kernel/archive/meson64-6.15/dt/meson-g12b-a311d-cainiao-cniot-core.dts

@@ -176,6 +176,23 @@
 		vin-supply = <&dc_in>;
 	};
 
+	/*
+	 * The Type-C port on the host is switched with the four USB contacts on the side of the host via GPIOA_14.
+	 * Since the Type-C port on the host is either used for power supply or blocked by the dock,
+	 * switching USB 2.0 access to the four contacts on the side of the host is a better choice.
+	 * To use the Type-C port for data transmission,
+	 * you only need to set GPIOA_14 in the node below to a high level.
+	 */
+	usb_switch: regulator-usb-switch {
+		compatible = "regulator-fixed";
+		enable-active-low;
+		gpio = <&gpio GPIOA_14 GPIO_ACTIVE_LOW>;
+		regulator-name = "usb_switch";
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&dc_in>;
+	};
+
 	vdd_amp: regulator-vdd-amp {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -558,7 +575,7 @@
 };
 
 &usb2_phy1 {
-	phy-supply = <&amp_power>;
+	phy-supply = <&usb_switch>;
 };
 
 &usb3_pcie_phy {

patch/u-boot/v2025.04/board_cainiao-cniot-core/add-board-cainiao-cniot-core.patch

@@ -128,10 +128,10 @@ index 00000000..345d9b86
 +CONFIG_ZSTD=y
 diff --git a/dts/upstream/src/arm64/amlogic/meson-g12b-a311d-cainiao-cniot-core.dts b/dts/upstream/src/arm64/amlogic/meson-g12b-a311d-cainiao-cniot-core.dts
 new file mode 100644
-index 00000000..40b81e87
+index 00000000..53318e9d
 --- /dev/null
 +++ b/dts/upstream/src/arm64/amlogic/meson-g12b-a311d-cainiao-cniot-core.dts
-@@ -0,0 +1,571 @@
+@@ -0,0 +1,588 @@
 +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
 +/*
 + * Copyright (c) 2019 BayLibre, SAS
@@ -310,6 +310,23 @@ index 00000000..40b81e87
 +		vin-supply = <&dc_in>;
 +	};
 +
++	/*
++	 * The Type-C port on the host is switched with the four USB contacts on the side of the host via GPIOA_14.
++	 * Since the Type-C port on the host is either used for power supply or blocked by the dock,
++	 * switching USB 2.0 access to the four contacts on the side of the host is a better choice.
++	 * To use the Type-C port for data transmission,
++	 * you only need to set GPIOA_14 in the node below to a high level.
++	 */
++	usb_switch: regulator-usb-switch {
++		compatible = "regulator-fixed";
++		enable-active-low;
++		gpio = <&gpio GPIOA_14 GPIO_ACTIVE_LOW>;
++		regulator-name = "usb_switch";
++		regulator-always-on;
++		regulator-boot-on;
++		vin-supply = <&dc_in>;
++	};
++
 +	vdd_amp: regulator-vdd-amp {
 +		compatible = "regulator-fixed";
 +		enable-active-high;
@@ -692,7 +709,7 @@ index 00000000..40b81e87
 +};
 +
 +&usb2_phy1 {
-+	phy-supply = <&amp_power>;
++	phy-supply = <&usb_switch>;
 +};
 +
 +&usb3_pcie_phy {