1 // SPDX-License-Identifier: GPL-2.0+
4 * Atmel Semiconductor <www.atmel.com>
5 * Written-by: Bo Shen <voice.shen@atmel.com>
13 #include <asm/arch/clk.h>
19 int ehci_hcd_init(int index, enum usb_init_type init,
20 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
23 if (at91_upll_clk_enable())
26 /* Enable USB Host clock */
27 at91_periph_clk_enable(ATMEL_ID_UHPHS);
29 *hccr = (struct ehci_hccr *)ATMEL_BASE_EHCI;
30 *hcor = (struct ehci_hcor *)((uint32_t)*hccr +
31 HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
36 int ehci_hcd_stop(int index)
38 /* Disable USB Host Clock */
39 at91_periph_clk_disable(ATMEL_ID_UHPHS);
41 /* Disable UTMI PLL */
42 if (at91_upll_clk_disable())
50 struct ehci_atmel_priv {
51 struct ehci_ctrl ehci;
54 static int ehci_atmel_enable_clk(struct udevice *dev)
59 ret = clk_get_by_index(dev, 0, &clk);
63 ret = clk_enable(&clk);
67 ret = clk_get_by_index(dev, 1, &clk);
71 ret = clk_enable(&clk);
80 static int ehci_atmel_probe(struct udevice *dev)
82 struct ehci_hccr *hccr;
83 struct ehci_hcor *hcor;
87 ret = ehci_atmel_enable_clk(dev);
89 debug("Failed to enable USB Host clock\n");
94 * Get the base address for EHCI controller from the device node
96 hcd_base = devfdt_get_addr(dev);
97 if (hcd_base == FDT_ADDR_T_NONE) {
98 debug("Can't get the EHCI register base address\n");
102 hccr = (struct ehci_hccr *)hcd_base;
103 hcor = (struct ehci_hcor *)
104 ((u32)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
106 debug("echi-atmel: init hccr %x and hcor %x hc_length %d\n",
107 (u32)hccr, (u32)hcor,
108 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
110 return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
113 static const struct udevice_id ehci_usb_ids[] = {
114 { .compatible = "atmel,at91sam9g45-ehci", },
118 U_BOOT_DRIVER(ehci_atmel) = {
119 .name = "ehci_atmel",
121 .of_match = ehci_usb_ids,
122 .probe = ehci_atmel_probe,
123 .remove = ehci_deregister,
124 .ops = &ehci_usb_ops,
125 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
126 .priv_auto_alloc_size = sizeof(struct ehci_atmel_priv),
127 .flags = DM_FLAG_ALLOC_PRIV_DMA,