1 // SPDX-License-Identifier:     GPL-2.0
3  * Generic DWC3 Glue layer
5  * Copyright (C) 2016 - 2018 Xilinx, Inc.
7  * Based on dwc3-omap.c.
11 #include <asm-generic/io.h>
13 #include <dm/device-internal.h>
15 #include <dwc3-uboot.h>
40 	struct dwc3 dwc3;  member
55 	struct dwc3 *dwc3 = &priv->dwc3;  in dwc3_generic_probe()  local
56 	struct dwc3_glue_data *glue = dev_get_platdata(dev->parent);  in dwc3_generic_probe()
58 	dwc3->dev = dev;  in dwc3_generic_probe()
59 	dwc3->maximum_speed = plat->maximum_speed;  in dwc3_generic_probe()
60 	dwc3->dr_mode = plat->dr_mode;  in dwc3_generic_probe()
62 	dwc3_of_parse(dwc3);  in dwc3_generic_probe()
69 	if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3")) {  in dwc3_generic_probe()
70 		reset_assert_bulk(&glue->resets);  in dwc3_generic_probe()
74 	rc = dwc3_setup_phy(dev, &priv->phys, &priv->num_phys);  in dwc3_generic_probe()
78 	if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3"))  in dwc3_generic_probe()
79 		reset_deassert_bulk(&glue->resets);  in dwc3_generic_probe()
81 	priv->base = map_physmem(plat->base, DWC3_OTG_REGS_END, MAP_NOCACHE);  in dwc3_generic_probe()
82 	dwc3->regs = priv->base + DWC3_GLOBALS_REGS_START;  in dwc3_generic_probe()
85 	rc =  dwc3_init(dwc3);  in dwc3_generic_probe()
87 		unmap_physmem(priv->base, MAP_NOCACHE);  in dwc3_generic_probe()
97 	struct dwc3 *dwc3 = &priv->dwc3;  in dwc3_generic_remove()  local
99 	dwc3_remove(dwc3);  in dwc3_generic_remove()
100 	dwc3_shutdown_phy(dev, priv->phys, priv->num_phys);  in dwc3_generic_remove()
101 	unmap_physmem(dwc3->regs, MAP_NOCACHE);  in dwc3_generic_remove()
109 	ofnode node = dev->node;  in dwc3_generic_ofdata_to_platdata()
111 	plat->base = dev_read_addr(dev);  in dwc3_generic_ofdata_to_platdata()
113 	plat->maximum_speed = usb_get_maximum_speed(node);  in dwc3_generic_ofdata_to_platdata()
114 	if (plat->maximum_speed == USB_SPEED_UNKNOWN) {  in dwc3_generic_ofdata_to_platdata()
116 		plat->maximum_speed = USB_SPEED_SUPER;  in dwc3_generic_ofdata_to_platdata()
119 	plat->dr_mode = usb_get_dr_mode(node);  in dwc3_generic_ofdata_to_platdata()
120 	if (plat->dr_mode == USB_DR_MODE_UNKNOWN) {  in dwc3_generic_ofdata_to_platdata()
122 		return -ENODEV;  in dwc3_generic_ofdata_to_platdata()
123 	} else if (plat->dr_mode != USB_DR_MODE_HOST &&  in dwc3_generic_ofdata_to_platdata()
124 		   !strcmp(dev->driver->name, "dwc3-generic-host")) {  in dwc3_generic_ofdata_to_platdata()
126 		plat->dr_mode = USB_DR_MODE_HOST;  in dwc3_generic_ofdata_to_platdata()
136 	struct dwc3 *dwc3 = &priv->dwc3;  in dm_usb_gadget_handle_interrupts()  local
138 	dwc3_gadget_uboot_handle_interrupt(dwc3);  in dm_usb_gadget_handle_interrupts()
158 	.name	= "dwc3-generic-peripheral",
176 	rc = dwc3_generic_probe(dev, &priv->gen_priv);  in dwc3_generic_host_probe()
180 	hccr = (struct xhci_hccr *)priv->gen_priv.base;  in dwc3_generic_host_probe()
181 	hcor = (struct xhci_hcor *)(priv->gen_priv.base +  in dwc3_generic_host_probe()
182 			HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));  in dwc3_generic_host_probe()
196 	return dwc3_generic_remove(dev, &priv->gen_priv);  in dwc3_generic_host_remove()
200 	.name	= "dwc3-generic-host",
244 	void *base = map_physmem(glue->regs, 0x10000, MAP_NOCACHE);  in dwc3_ti_select_dr_mode()
246 	if (device_is_compatible(dev, "ti,am437x-dwc3"))  in dwc3_ti_select_dr_mode()
249 	utmi_mode = dev_read_u32_default(dev, "utmi-mode",  in dwc3_ti_select_dr_mode()
253 		      dev->name);  in dwc3_ti_select_dr_mode()
306 	ofnode_for_each_subnode(node, parent->node) {  in dwc3_glue_bind()
320 			driver = "dwc3-generic-host";  in dwc3_glue_bind()
326 			driver = "dwc3-generic-peripheral";  in dwc3_glue_bind()
332 			driver = "dwc3-generic-host";  in dwc3_glue_bind()
337 			return -ENODEV;  in dwc3_glue_bind()
360 	ret = reset_get_bulk(dev, &glue->resets);  in dwc3_glue_reset_init()
361 	if (ret == -ENOTSUPP || ret == -ENOENT)  in dwc3_glue_reset_init()
366 	ret = reset_deassert_bulk(&glue->resets);  in dwc3_glue_reset_init()
368 		reset_release_bulk(&glue->resets);  in dwc3_glue_reset_init()
380 	ret = clk_get_bulk(dev, &glue->clks);  in dwc3_glue_clk_init()
381 	if (ret == -ENOSYS || ret == -ENOENT)  in dwc3_glue_clk_init()
387 	ret = clk_enable_bulk(&glue->clks);  in dwc3_glue_clk_init()
389 		clk_release_bulk(&glue->clks);  in dwc3_glue_clk_init()
405 	glue->regs = dev_read_addr(dev);  in dwc3_glue_probe()
419 	if (glue->resets.count < 1) {  in dwc3_glue_probe()
428 		dr_mode = usb_get_dr_mode(child->node);  in dwc3_glue_probe()
430 		if (ops && ops->select_dr_mode)  in dwc3_glue_probe()
431 			ops->select_dr_mode(dev, index, dr_mode);  in dwc3_glue_probe()
442 	reset_release_bulk(&glue->resets);  in dwc3_glue_remove()
444 	clk_release_bulk(&glue->clks);  in dwc3_glue_remove()
450 	{ .compatible = "xlnx,zynqmp-dwc3" },
451 	{ .compatible = "ti,keystone-dwc3"},
452 	{ .compatible = "ti,dwc3", .data = (ulong)&ti_ops },
453 	{ .compatible = "ti,am437x-dwc3", .data = (ulong)&ti_ops },
454 	{ .compatible = "rockchip,rk3328-dwc3" },
455 	{ .compatible = "rockchip,rk3399-dwc3" },
460 	.name	= "dwc3-generic-wrapper",