3 files changed, 57 insertions, 0 deletions
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig
index c346d03..eb5aa38 100644
--- a/drivers/power/regulator/Kconfig
+++ b/drivers/power/regulator/Kconfig
@@ -57,6 +57,13 @@ config SPL_REGULATOR_AXP
 	  Enable support in SPL for the regulators (DCDCs, LDOs) in the
 	  X-Powers AXP152, AXP2xx, and AXP8xx PMICs.
 
+config REGULATOR_AXP_USB_POWER
+	bool "Enable driver for X-Powers AXP PMIC USB power supply"
+	depends on DM_REGULATOR && PMIC_AXP
+	help
+	  Enable support for reading the USB power supply status from
+	  X-Powers AXP2xx and AXP8xx PMICs.
+
 config DM_REGULATOR_BD71837
 	bool "Enable Driver Model for ROHM BD71837/BD71847 regulators"
 	depends on DM_REGULATOR && DM_PMIC_BD71837
diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile
index 2d97e10..d9e0cd5 100644
--- a/drivers/power/regulator/Makefile
+++ b/drivers/power/regulator/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_$(SPL_)DM_REGULATOR) += regulator-uclass.o
 obj-$(CONFIG_REGULATOR_ACT8846) += act8846.o
 obj-$(CONFIG_REGULATOR_AS3722)	+= as3722_regulator.o
 obj-$(CONFIG_$(SPL_)REGULATOR_AXP) += axp_regulator.o
+obj-$(CONFIG_$(SPL_)REGULATOR_AXP_USB_POWER) += axp_usb_power.o
 obj-$(CONFIG_$(SPL_)DM_REGULATOR_DA9063) += da9063.o
 obj-$(CONFIG_DM_REGULATOR_MAX77686) += max77686.o
 obj-$(CONFIG_DM_REGULATOR_NPCM8XX) += npcm8xx_regulator.o
diff --git a/drivers/power/regulator/axp_usb_power.c b/drivers/power/regulator/axp_usb_power.c
new file mode 100644
index 0000000..f32fb6a
--- /dev/null
+++ b/drivers/power/regulator/axp_usb_power.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <dm/device.h>
+#include <errno.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+
+#define AXP_POWER_STATUS		0x00
+#define AXP_POWER_STATUS_VBUS_PRESENT		BIT(5)
+
+static int axp_usb_power_get_enable(struct udevice *dev)
+{
+	int ret;
+
+	ret = pmic_reg_read(dev->parent, AXP_POWER_STATUS);
+	if (ret < 0)
+		return ret;
+
+	return !!(ret & AXP_POWER_STATUS_VBUS_PRESENT);
+}
+
+static const struct dm_regulator_ops axp_usb_power_ops = {
+	.get_enable		= axp_usb_power_get_enable,
+};
+
+static int axp_usb_power_probe(struct udevice *dev)
+{
+	struct dm_regulator_uclass_plat *uc_plat = dev_get_uclass_plat(dev);
+
+	uc_plat->type = REGULATOR_TYPE_FIXED;
+
+	return 0;
+}
+
+static const struct udevice_id axp_usb_power_ids[] = {
+	{ .compatible = "x-powers,axp202-usb-power-supply" },
+	{ .compatible = "x-powers,axp221-usb-power-supply" },
+	{ .compatible = "x-powers,axp223-usb-power-supply" },
+	{ .compatible = "x-powers,axp813-usb-power-supply" },
+	{ }
+};
+
+U_BOOT_DRIVER(axp_usb_power) = {
+	.name		= "axp_usb_power",
+	.id		= UCLASS_REGULATOR,
+	.of_match	= axp_usb_power_ids,
+	.probe		= axp_usb_power_probe,
+	.ops		= &axp_usb_power_ops,
+};