1 // SPDX-License-Identifier: GPL-2.0
3  * cdns3-ti.c - TI specific Glue layer for Cadence USB Controller
5  * Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com
14 #include <linux/dma-mapping.h>
20 /* USB Wrapper register offsets */
80 	return readl(data->usbss + offset);  in cdns_ti_readl()
85 	writel(value, data->usbss + offset);  in cdns_ti_writel()
90 	struct device *dev = &pdev->dev;  in cdns_ti_probe()
91 	struct device_node *node = pdev->dev.of_node;  in cdns_ti_probe()
100 		return -ENOMEM;  in cdns_ti_probe()
104 	data->dev = dev;  in cdns_ti_probe()
106 	data->usbss = devm_platform_ioremap_resource(pdev, 0);  in cdns_ti_probe()
107 	if (IS_ERR(data->usbss)) {  in cdns_ti_probe()
109 		return PTR_ERR(data->usbss);  in cdns_ti_probe()
112 	data->usb2_refclk = devm_clk_get(dev, "ref");  in cdns_ti_probe()
113 	if (IS_ERR(data->usb2_refclk)) {  in cdns_ti_probe()
115 		return PTR_ERR(data->usb2_refclk);  in cdns_ti_probe()
118 	data->lpm_clk = devm_clk_get(dev, "lpm");  in cdns_ti_probe()
119 	if (IS_ERR(data->lpm_clk)) {  in cdns_ti_probe()
121 		return PTR_ERR(data->lpm_clk);  in cdns_ti_probe()
124 	rate = clk_get_rate(data->usb2_refclk);  in cdns_ti_probe()
133 		return -EINVAL;  in cdns_ti_probe()
156 	data->vbus_divider = device_property_read_bool(dev, "ti,vbus-divider");  in cdns_ti_probe()
157 	if (data->vbus_divider)  in cdns_ti_probe()
165 	data->usb2_only = device_property_read_bool(dev, "ti,usb2-only");  in cdns_ti_probe()
166 	if (data->usb2_only)  in cdns_ti_probe()
175 	/* de-assert RESET */  in cdns_ti_probe()
188 	pm_runtime_put_sync(data->dev);  in cdns_ti_probe()
189 	pm_runtime_disable(data->dev);  in cdns_ti_probe()
205 	struct device *dev = &pdev->dev;  in cdns_ti_remove()
215 	{ .compatible = "ti,j721e-usb", },
216 	{ .compatible = "ti,am64-usb", },
225 		.name	= "cdns3-ti",
232 MODULE_ALIAS("platform:cdns3-ti");