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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Based on the DA8xx "glue layer" code.
- * Copyright (c) 2008-2019, MontaVista Software, Inc. <source@mvista.com>
- *
- * DT support added by: Adam Ford <aford173@gmail.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <log.h>
- #include <dm/device-internal.h>
- #include <dm/lists.h>
- #include <asm/arch/hardware.h>
- #include <asm/arch/da8xx-usb.h>
- #include <asm/io.h>
- #include <generic-phy.h>
- static int da8xx_usb_phy_power_on(struct phy *phy)
- {
- unsigned long timeout;
- clrsetbits_le32(&davinci_syscfg_regs->cfgchip2,
- CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN |
- CFGCHIP2_OTGMODE | CFGCHIP2_REFFREQ,
- CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN |
- CFGCHIP2_PHY_PLLON | CFGCHIP2_REFFREQ_24MHZ);
- /* wait until the usb phy pll locks */
- timeout = get_timer(0);
- while (get_timer(timeout) < 10) {
- if (readl(&davinci_syscfg_regs->cfgchip2) & CFGCHIP2_PHYCLKGD)
- return 0;
- }
- debug("Phy was not turned on\n");
- return -ENODEV;
- }
- static int da8xx_usb_phy_power_off(struct phy *phy)
- {
- clrsetbits_le32(&davinci_syscfg_regs->cfgchip2,
- CFGCHIP2_PHY_PLLON,
- CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN);
- return 0;
- }
- static const struct udevice_id da8xx_phy_ids[] = {
- { .compatible = "ti,da830-usb-phy" },
- { }
- };
- static struct phy_ops da8xx_phy_ops = {
- .power_on = da8xx_usb_phy_power_on,
- .power_off = da8xx_usb_phy_power_off,
- };
- U_BOOT_DRIVER(da8xx_phy) = {
- .name = "da8xx-usb-phy",
- .id = UCLASS_PHY,
- .of_match = da8xx_phy_ids,
- .ops = &da8xx_phy_ops,
- };
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