2 * (C) Copyright 2009, 2011 Freescale Semiconductor, Inc.
4 * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
6 * Author: Tor Krill tor@excito.com
8 * SPDX-License-Identifier: GPL-2.0+
15 #include <usb/ehci-fsl.h>
20 /* Check USB PHY clock valid */
21 static int usb_phy_clk_valid(struct usb_ehci *ehci)
23 if (!((in_be32(&ehci->control) & PHY_CLK_VALID) ||
24 in_be32(&ehci->prictrl))) {
25 printf("USB PHY clock invalid!\n");
33 * Create the appropriate control structures to manage
34 * a new EHCI host controller.
36 * Excerpts from linux ehci fsl driver.
38 int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
40 struct usb_ehci *ehci;
41 const char *phy_type = NULL;
43 #ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
49 ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR;
50 *hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
51 *hcor = (struct ehci_hcor *)((uint32_t) *hccr +
52 HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
54 /* Set to Host mode */
55 setbits_le32(&ehci->usbmode, CM_HOST);
57 out_be32(&ehci->snoop1, SNOOP_SIZE_2GB);
58 out_be32(&ehci->snoop2, 0x80000000 | SNOOP_SIZE_2GB);
61 if (hwconfig_sub("usb1", "phy_type"))
62 phy_type = hwconfig_subarg("usb1", "phy_type", &len);
64 phy_type = getenv("usb_phy_type");
67 #ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
68 /* if none specified assume internal UTMI */
69 strcpy(usb_phy, "utmi");
72 printf("WARNING: USB phy type not defined !!\n");
77 if (!strcmp(phy_type, "utmi")) {
78 #if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY)
79 setbits_be32(&ehci->control, PHY_CLK_SEL_UTMI);
80 setbits_be32(&ehci->control, UTMI_PHY_EN);
81 udelay(1000); /* delay required for PHY Clk to appear */
83 out_le32(&(*hcor)->or_portsc[0], PORT_PTS_UTMI);
84 setbits_be32(&ehci->control, USB_EN);
86 setbits_be32(&ehci->control, PHY_CLK_SEL_ULPI);
87 clrsetbits_be32(&ehci->control, UTMI_PHY_EN, USB_EN);
88 udelay(1000); /* delay required for PHY Clk to appear */
89 if (!usb_phy_clk_valid(ehci))
91 out_le32(&(*hcor)->or_portsc[0], PORT_PTS_ULPI);
94 out_be32(&ehci->prictrl, 0x0000000c);
95 out_be32(&ehci->age_cnt_limit, 0x00000040);
96 out_be32(&ehci->sictrl, 0x00000001);
98 in_le32(&ehci->usbmode);
104 * Destroy the appropriate control structures corresponding
105 * the the EHCI host controller.
107 int ehci_hcd_stop(int index)