1 // SPDX-License-Identifier: GPL-2.0
3  * dwc3-xilinx.c - Xilinx DWC3 controller specific glue driver
12 #include <linux/clk.h>
15 #include <linux/dma-mapping.h>
21 #include <linux/firmware/xlnx-zynqmp.h>
34 /* Versal USB Reset ID */
60 	reg = readl(priv_data->regs + XLNX_USB_PHY_RST_EN);  in dwc3_xlnx_mask_phy_rst()
67 	writel(reg, priv_data->regs + XLNX_USB_PHY_RST_EN);  in dwc3_xlnx_mask_phy_rst()
72 	struct device		*dev = priv_data->dev;  in dwc3_xlnx_init_versal()
77 	/* Assert and De-assert reset */  in dwc3_xlnx_init_versal()
88 		dev_err_probe(dev, ret, "failed to De-assert Reset\n");  in dwc3_xlnx_init_versal()
99 	struct device		*dev = priv_data->dev;  in dwc3_xlnx_init_zynqmp()
105 	usb3_phy = devm_phy_get(dev, "usb3-phy");  in dwc3_xlnx_init_zynqmp()
106 	if (PTR_ERR(usb3_phy) == -EPROBE_DEFER) {  in dwc3_xlnx_init_zynqmp()
107 		ret = -EPROBE_DEFER;  in dwc3_xlnx_init_zynqmp()
168 	writel(FPD_POWER_PRSNT_OPTION, priv_data->regs + XLNX_USB_FPD_POWER_PRSNT);  in dwc3_xlnx_init_zynqmp()
171 	writel(PIPE_CLK_SELECT, priv_data->regs + XLNX_USB_FPD_PIPE_CLK);  in dwc3_xlnx_init_zynqmp()
196 	if (of_dma_is_coherent(dev->of_node) || device_iommu_mapped(dev)) {  in dwc3_xlnx_init_zynqmp()
197 		reg = readl(priv_data->regs + XLNX_USB_TRAFFIC_ROUTE_CONFIG);  in dwc3_xlnx_init_zynqmp()
199 		writel(reg, priv_data->regs + XLNX_USB_TRAFFIC_ROUTE_CONFIG);  in dwc3_xlnx_init_zynqmp()
208 		.compatible = "xlnx,zynqmp-dwc3",
212 		.compatible = "xlnx,versal-dwc3",
222 	struct device			*dev = &pdev->dev;  in dwc3_xlnx_probe()
223 	struct device_node		*np = dev->of_node;  in dwc3_xlnx_probe()
230 		return -ENOMEM;  in dwc3_xlnx_probe()
239 	match = of_match_node(dwc3_xlnx_of_match, pdev->dev.of_node);  in dwc3_xlnx_probe()
241 	priv_data->pltfm_init = match->data;  in dwc3_xlnx_probe()
242 	priv_data->regs = regs;  in dwc3_xlnx_probe()
243 	priv_data->dev = dev;  in dwc3_xlnx_probe()
247 	ret = devm_clk_bulk_get_all(priv_data->dev, &priv_data->clks);  in dwc3_xlnx_probe()
251 	priv_data->num_clocks = ret;  in dwc3_xlnx_probe()
253 	ret = clk_bulk_prepare_enable(priv_data->num_clocks, priv_data->clks);  in dwc3_xlnx_probe()
257 	ret = priv_data->pltfm_init(priv_data);  in dwc3_xlnx_probe()
273 	clk_bulk_disable_unprepare(priv_data->num_clocks, priv_data->clks);  in dwc3_xlnx_probe()
281 	struct device		*dev = &pdev->dev;  in dwc3_xlnx_remove()
285 	clk_bulk_disable_unprepare(priv_data->num_clocks, priv_data->clks);  in dwc3_xlnx_remove()
286 	priv_data->num_clocks = 0;  in dwc3_xlnx_remove()
299 	clk_bulk_disable(priv_data->num_clocks, priv_data->clks);  in dwc3_xlnx_suspend_common()
308 	return clk_bulk_enable(priv_data->num_clocks, priv_data->clks);  in dwc3_xlnx_resume_common()
326 		.name		= "dwc3-xilinx",