1 // SPDX-License-Identifier: GPL-2.0
3  * cdns3-starfive.c - StarFive specific Glue layer for Cadence USB Controller
13 #include <linux/mfd/syscon.h>
49 	regmap_update_bits(data->stg_syscon, data->stg_usb_mode,  in cdns_mode_init()
54 	mode = usb_get_dr_mode(&pdev->dev);  in cdns_mode_init()
58 		regmap_update_bits(data->stg_syscon,  in cdns_mode_init()
59 				   data->stg_usb_mode,  in cdns_mode_init()
62 		regmap_update_bits(data->stg_syscon,  in cdns_mode_init()
63 				   data->stg_usb_mode,  in cdns_mode_init()
69 		regmap_update_bits(data->stg_syscon, data->stg_usb_mode,  in cdns_mode_init()
71 		regmap_update_bits(data->stg_syscon, data->stg_usb_mode,  in cdns_mode_init()
83 	ret = clk_bulk_prepare_enable(data->num_clks, data->clks);  in cdns_clk_rst_init()
85 		return dev_err_probe(data->dev, ret,  in cdns_clk_rst_init()
88 	ret = reset_control_deassert(data->resets);  in cdns_clk_rst_init()
90 		dev_err(data->dev, "failed to reset clocks\n");  in cdns_clk_rst_init()
97 	clk_bulk_disable_unprepare(data->num_clks, data->clks);  in cdns_clk_rst_init()
103 	reset_control_assert(data->resets);  in cdns_clk_rst_deinit()
104 	clk_bulk_disable_unprepare(data->num_clks, data->clks);  in cdns_clk_rst_deinit()
109 	struct device *dev = &pdev->dev;  in cdns_starfive_probe()
116 		return -ENOMEM;  in cdns_starfive_probe()
118 	data->dev = dev;  in cdns_starfive_probe()
120 	data->stg_syscon =  in cdns_starfive_probe()
121 		syscon_regmap_lookup_by_phandle_args(pdev->dev.of_node,  in cdns_starfive_probe()
122 						     "starfive,stg-syscon", 1, &args);  in cdns_starfive_probe()
124 	if (IS_ERR(data->stg_syscon))  in cdns_starfive_probe()
125 		return dev_err_probe(dev, PTR_ERR(data->stg_syscon),  in cdns_starfive_probe()
126 				     "Failed to parse starfive,stg-syscon\n");  in cdns_starfive_probe()
128 	data->stg_usb_mode = args;  in cdns_starfive_probe()
130 	data->num_clks = devm_clk_bulk_get_all(data->dev, &data->clks);  in cdns_starfive_probe()
131 	if (data->num_clks < 0)  in cdns_starfive_probe()
132 		return dev_err_probe(data->dev, -ENODEV,  in cdns_starfive_probe()
135 	data->resets = devm_reset_control_array_get_exclusive(data->dev);  in cdns_starfive_probe()
136 	if (IS_ERR(data->resets))  in cdns_starfive_probe()
137 		return dev_err_probe(data->dev, PTR_ERR(data->resets),  in cdns_starfive_probe()
145 	ret = of_platform_populate(dev->of_node, NULL, NULL, dev);  in cdns_starfive_probe()
171 	struct device *dev = &pdev->dev;  in cdns_starfive_remove()
188 	return clk_bulk_prepare_enable(data->num_clks, data->clks);  in cdns_starfive_runtime_resume()
195 	clk_bulk_disable_unprepare(data->num_clks, data->clks);  in cdns_starfive_runtime_suspend()
226 	{ .compatible = "starfive,jh7110-usb", },
235 		.name	= "cdns3-starfive",
242 MODULE_ALIAS("platform:cdns3-starfive");