2 * (C) Copyright 2014, Xilinx, Inc
4 * USB Low level initialization(Specific to zynq)
6 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/arch/hardware.h>
13 #include <asm/arch/sys_proto.h>
15 #include <usb/ehci-ci.h>
20 struct zynq_ehci_priv
{
21 struct ehci_ctrl ehcictrl
;
22 struct usb_ehci
*ehci
;
25 static int ehci_zynq_ofdata_to_platdata(struct udevice
*dev
)
27 struct zynq_ehci_priv
*priv
= dev_get_priv(dev
);
29 priv
->ehci
= (struct usb_ehci
*)dev_get_addr_ptr(dev
);
36 static int ehci_zynq_probe(struct udevice
*dev
)
38 struct usb_platdata
*plat
= dev_get_platdata(dev
);
39 struct zynq_ehci_priv
*priv
= dev_get_priv(dev
);
40 struct ehci_hccr
*hccr
;
41 struct ehci_hcor
*hcor
;
42 struct ulpi_viewport ulpi_vp
;
43 /* Used for writing the ULPI data address */
44 struct ulpi_regs
*ulpi
= (struct ulpi_regs
*)0;
47 hccr
= (struct ehci_hccr
*)((uint32_t)&priv
->ehci
->caplength
);
48 hcor
= (struct ehci_hcor
*)((uint32_t) hccr
+
49 HC_LENGTH(ehci_readl(&hccr
->cr_capbase
)));
51 ulpi_vp
.viewport_addr
= (u32
)&priv
->ehci
->ulpi_viewpoint
;
54 ret
= ulpi_init(&ulpi_vp
);
56 puts("zynq ULPI viewport init failed\n");
61 ulpi_write(&ulpi_vp
, &ulpi
->otg_ctrl
,
62 ULPI_OTG_DP_PULLDOWN
| ULPI_OTG_DM_PULLDOWN
|
64 ulpi_write(&ulpi_vp
, &ulpi
->function_ctrl
,
65 ULPI_FC_FULL_SPEED
| ULPI_FC_OPMODE_NORMAL
|
67 ulpi_write(&ulpi_vp
, &ulpi
->iface_ctrl
, 0);
70 ulpi_write(&ulpi_vp
, &ulpi
->otg_ctrl_set
,
71 ULPI_OTG_DRVVBUS
| ULPI_OTG_DRVVBUS_EXT
);
73 return ehci_register(dev
, hccr
, hcor
, NULL
, 0, plat
->init_type
);
76 static int ehci_zynq_remove(struct udevice
*dev
)
80 ret
= ehci_deregister(dev
);
87 static const struct udevice_id ehci_zynq_ids
[] = {
88 { .compatible
= "xlnx,zynq-usb-2.20a" },
92 U_BOOT_DRIVER(ehci_zynq
) = {
95 .of_match
= ehci_zynq_ids
,
96 .ofdata_to_platdata
= ehci_zynq_ofdata_to_platdata
,
97 .probe
= ehci_zynq_probe
,
98 .remove
= ehci_zynq_remove
,
100 .platdata_auto_alloc_size
= sizeof(struct usb_platdata
),
101 .priv_auto_alloc_size
= sizeof(struct zynq_ehci_priv
),
102 .flags
= DM_FLAG_ALLOC_PRIV_DMA
,