1 /* 2 * (C) Copyright 2009, 2011 Freescale Semiconductor, Inc. 3 * 4 * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB 5 * 6 * Author: Tor Krill tor@excito.com 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <common.h> 12 #include <pci.h> 13 #include <usb.h> 14 #include <asm/io.h> 15 #include <usb/ehci-fsl.h> 16 #include <hwconfig.h> 17 18 #include "ehci.h" 19 20 /* Check USB PHY clock valid */ 21 static int usb_phy_clk_valid(struct usb_ehci *ehci) 22 { 23 if (!((in_be32(&ehci->control) & PHY_CLK_VALID) || 24 in_be32(&ehci->prictrl))) { 25 printf("USB PHY clock invalid!\n"); 26 return 0; 27 } else { 28 return 1; 29 } 30 } 31 32 /* 33 * Create the appropriate control structures to manage 34 * a new EHCI host controller. 35 * 36 * Excerpts from linux ehci fsl driver. 37 */ 38 int ehci_hcd_init(int index, enum usb_init_type init, 39 struct ehci_hccr **hccr, struct ehci_hcor **hcor) 40 { 41 struct usb_ehci *ehci = NULL; 42 const char *phy_type = NULL; 43 size_t len; 44 char current_usb_controller[5]; 45 #ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY 46 char usb_phy[5]; 47 48 usb_phy[0] = '\0'; 49 #endif 50 memset(current_usb_controller, '\0', 5); 51 snprintf(current_usb_controller, 4, "usb%d", index+1); 52 53 switch (index) { 54 case 0: 55 ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB1_ADDR; 56 break; 57 case 1: 58 ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB2_ADDR; 59 break; 60 default: 61 printf("ERROR: wrong controller index!!\n"); 62 break; 63 }; 64 65 *hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength); 66 *hcor = (struct ehci_hcor *)((uint32_t) *hccr + 67 HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); 68 69 /* Set to Host mode */ 70 setbits_le32(&ehci->usbmode, CM_HOST); 71 72 out_be32(&ehci->snoop1, SNOOP_SIZE_2GB); 73 out_be32(&ehci->snoop2, 0x80000000 | SNOOP_SIZE_2GB); 74 75 /* Init phy */ 76 if (hwconfig_sub(current_usb_controller, "phy_type")) 77 phy_type = hwconfig_subarg(current_usb_controller, 78 "phy_type", &len); 79 else 80 phy_type = getenv("usb_phy_type"); 81 82 if (!phy_type) { 83 #ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY 84 /* if none specified assume internal UTMI */ 85 strcpy(usb_phy, "utmi"); 86 phy_type = usb_phy; 87 #else 88 printf("WARNING: USB phy type not defined !!\n"); 89 return -1; 90 #endif 91 } 92 93 if (!strncmp(phy_type, "utmi", 4)) { 94 #if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY) 95 setbits_be32(&ehci->control, PHY_CLK_SEL_UTMI); 96 setbits_be32(&ehci->control, UTMI_PHY_EN); 97 udelay(1000); /* delay required for PHY Clk to appear */ 98 #endif 99 out_le32(&(*hcor)->or_portsc[0], PORT_PTS_UTMI); 100 setbits_be32(&ehci->control, USB_EN); 101 } else { 102 setbits_be32(&ehci->control, PHY_CLK_SEL_ULPI); 103 clrsetbits_be32(&ehci->control, UTMI_PHY_EN, USB_EN); 104 udelay(1000); /* delay required for PHY Clk to appear */ 105 if (!usb_phy_clk_valid(ehci)) 106 return -EINVAL; 107 out_le32(&(*hcor)->or_portsc[0], PORT_PTS_ULPI); 108 } 109 110 out_be32(&ehci->prictrl, 0x0000000c); 111 out_be32(&ehci->age_cnt_limit, 0x00000040); 112 out_be32(&ehci->sictrl, 0x00000001); 113 114 in_le32(&ehci->usbmode); 115 116 return 0; 117 } 118 119 /* 120 * Destroy the appropriate control structures corresponding 121 * the the EHCI host controller. 122 */ 123 int ehci_hcd_stop(int index) 124 { 125 return 0; 126 } 127