uboot-phytec
Public
Source
committed fc58263d2e4x
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// SPDX-License-Identifier: GPL-2.0+2
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/*3
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* Based on the DA8xx "glue layer" code.4
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* Copyright (c) 2008-2019, MontaVista Software, Inc. <source@mvista.com>5
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*6
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* DT support added by: Adam Ford <aford173@gmail.com>7
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*/8
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static int da8xx_usb_phy_power_on(struct phy *phy)19
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{20
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unsigned long timeout;21
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clrsetbits_le32(&davinci_syscfg_regs->cfgchip2,23
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CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN |24
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CFGCHIP2_OTGMODE | CFGCHIP2_REFFREQ,25
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CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN |26
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CFGCHIP2_PHY_PLLON | CFGCHIP2_REFFREQ_24MHZ);27
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/* wait until the usb phy pll locks */29
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timeout = get_timer(0);30
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while (get_timer(timeout) < 10) {31
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if (readl(&davinci_syscfg_regs->cfgchip2) & CFGCHIP2_PHYCLKGD)32
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return 0;33
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}34
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debug("Phy was not turned on\n");36
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return -ENODEV;38
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}39
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static int da8xx_usb_phy_power_off(struct phy *phy)41
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{42
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clrsetbits_le32(&davinci_syscfg_regs->cfgchip2,43
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CFGCHIP2_PHY_PLLON,44
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CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN);45
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return 0;47
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}48
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static const struct udevice_id da8xx_phy_ids[] = {50
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{ .compatible = "ti,da830-usb-phy" },51
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{ }52
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};53
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static struct phy_ops da8xx_phy_ops = {55
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.power_on = da8xx_usb_phy_power_on,56
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.power_off = da8xx_usb_phy_power_off,57
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};58
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U_BOOT_DRIVER(da8xx_phy) = {60
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.name = "da8xx-usb-phy",61
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.id = UCLASS_PHY,62
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.of_match = da8xx_phy_ids,63
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.ops = &da8xx_phy_ops,64
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};