1 // SPDX-License-Identifier: GPL-2.0+
4 * Atmel Semiconductor <www.atmel.com>
5 * Written-by: Bo Shen <voice.shen@atmel.com>
14 #include <asm/arch/clk.h>
18 #if !CONFIG_IS_ENABLED(DM_USB)
20 int ehci_hcd_init(int index, enum usb_init_type init,
21 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
24 if (at91_upll_clk_enable())
27 /* Enable USB Host clock */
28 at91_periph_clk_enable(ATMEL_ID_UHPHS);
30 *hccr = (struct ehci_hccr *)ATMEL_BASE_EHCI;
31 *hcor = (struct ehci_hcor *)((uint32_t)*hccr +
32 HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
37 int ehci_hcd_stop(int index)
39 /* Disable USB Host Clock */
40 at91_periph_clk_disable(ATMEL_ID_UHPHS);
42 /* Disable UTMI PLL */
43 if (at91_upll_clk_disable())
51 struct ehci_atmel_priv {
52 struct ehci_ctrl ehci;
55 static int ehci_atmel_enable_clk(struct udevice *dev)
60 ret = clk_get_by_index(dev, 0, &clk);
64 ret = clk_enable(&clk);
68 ret = clk_get_by_index(dev, 1, &clk);
72 ret = clk_enable(&clk);
81 static int ehci_atmel_probe(struct udevice *dev)
83 struct ehci_hccr *hccr;
84 struct ehci_hcor *hcor;
88 ret = ehci_atmel_enable_clk(dev);
90 debug("Failed to enable USB Host clock\n");
95 * Get the base address for EHCI controller from the device node
97 hcd_base = devfdt_get_addr(dev);
98 if (hcd_base == FDT_ADDR_T_NONE) {
99 debug("Can't get the EHCI register base address\n");
103 hccr = (struct ehci_hccr *)hcd_base;
104 hcor = (struct ehci_hcor *)
105 ((u32)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
107 debug("echi-atmel: init hccr %x and hcor %x hc_length %d\n",
108 (u32)hccr, (u32)hcor,
109 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
111 return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
114 static const struct udevice_id ehci_usb_ids[] = {
115 { .compatible = "atmel,at91sam9g45-ehci", },
119 U_BOOT_DRIVER(ehci_atmel) = {
120 .name = "ehci_atmel",
122 .of_match = ehci_usb_ids,
123 .probe = ehci_atmel_probe,
124 .remove = ehci_deregister,
125 .ops = &ehci_usb_ops,
126 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
127 .priv_auto_alloc_size = sizeof(struct ehci_atmel_priv),
128 .flags = DM_FLAG_ALLOC_PRIV_DMA,