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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Driver for onboard USB hubs
- *
- * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
- *
- * Mostly inspired by Linux kernel v6.1 onboard_usb_hub driver
- */
- #include <common.h>
- #include <dm.h>
- #include <dm/device_compat.h>
- #include <power/regulator.h>
- struct onboard_hub {
- struct udevice *vdd;
- };
- static int usb_onboard_hub_probe(struct udevice *dev)
- {
- struct onboard_hub *hub = dev_get_priv(dev);
- int ret;
- ret = device_get_supply_regulator(dev, "vdd-supply", &hub->vdd);
- if (ret) {
- dev_err(dev, "can't get vdd-supply: %d\n", ret);
- return ret;
- }
- ret = regulator_set_enable_if_allowed(hub->vdd, true);
- if (ret)
- dev_err(dev, "can't enable vdd-supply: %d\n", ret);
- return ret;
- }
- static int usb_onboard_hub_remove(struct udevice *dev)
- {
- struct onboard_hub *hub = dev_get_priv(dev);
- int ret;
- ret = regulator_set_enable_if_allowed(hub->vdd, false);
- if (ret)
- dev_err(dev, "can't disable vdd-supply: %d\n", ret);
- return ret;
- }
- static const struct udevice_id usb_onboard_hub_ids[] = {
- /* Use generic usbVID,PID dt-bindings (usb-device.yaml) */
- { .compatible = "usb424,2514" }, /* USB2514B USB 2.0 */
- { }
- };
- U_BOOT_DRIVER(usb_onboard_hub) = {
- .name = "usb_onboard_hub",
- .id = UCLASS_USB_HUB,
- .probe = usb_onboard_hub_probe,
- .remove = usb_onboard_hub_remove,
- .of_match = usb_onboard_hub_ids,
- .priv_auto = sizeof(struct onboard_hub),
- };
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