phy/ti/phy-dm816x-usb.c

15 #include <linux/phy/phy.h>
22  * phy as being SR70LX Synopsys USB 2.0 OTG nanoPHY. It also seems at
32  * Finally, the phy on dm814x and am335x is different from dm816x.
35 #define DM816X_USB_CTRL_PHYSLEEP1	BIT(1)	/* Enable the first phy */
36 #define DM816X_USB_CTRL_PHYSLEEP0	BIT(0)	/* Enable the second phy */
47 	struct usb_phy phy;
71 static int dm816x_usb_phy_init(struct phy *x)
73 	struct dm816x_usb_phy *phy = phy_get_drvdata(x);
76 	if (clk_get_rate(phy->refclk) != 24000000)
77 		dev_warn(phy->dev, "nonstandard phy refclk\n");
80 	regmap_update_bits(phy->syscon, phy->usb_ctrl,
85 	regmap_read(phy->syscon, phy->usb_ctrl, &val);
87 		dev_info(phy->dev,
96 	regmap_read(phy->syscon, phy->usbphy_ctrl, &val);
100 	regmap_write(phy->syscon, phy->usbphy_ctrl, val);
112 	struct dm816x_usb_phy *phy = dev_get_drvdata(dev);
116 	mask = BIT(phy->instance);
117 	val = ~BIT(phy->instance);
118 	error = regmap_update_bits(phy->syscon, phy->usb_ctrl,
121 		dev_err(phy->dev, "phy%i failed to power off\n",
122 			phy->instance);
123 	clk_disable(phy->refclk);
130 	struct dm816x_usb_phy *phy = dev_get_drvdata(dev);
134 	error = clk_enable(phy->refclk);
144 	mask = BIT(phy->instance);
145 	val = BIT(phy->instance);
146 	error = regmap_update_bits(phy->syscon, phy->usb_ctrl,
149 		dev_err(phy->dev, "phy%i failed to power on\n",
150 			phy->instance);
151 		clk_disable(phy->refclk);
165 		.compatible = "ti,dm8168-usb-phy",
173 	struct dm816x_usb_phy *phy;
175 	struct phy *generic_phy;
180 	phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
181 	if (!phy)
188 	phy->syscon = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
190 	if (IS_ERR(phy->syscon))
191 		return PTR_ERR(phy->syscon);
198 	phy->usb_ctrl = 0x20;
199 	phy->usbphy_ctrl = (res->start & 0xff) + 4;
200 	if (phy->usbphy_ctrl == 0x2c)
201 		phy->instance = 1;
207 	phy->dev = &pdev->dev;
208 	phy->phy.dev = phy->dev;
209 	phy->phy.label = "dm8168_usb_phy";
210 	phy->phy.otg = otg;
211 	phy->phy.type = USB_PHY_TYPE_USB2;
214 	otg->usb_phy = &phy->phy;
216 	platform_set_drvdata(pdev, phy);
218 	phy->refclk = devm_clk_get(phy->dev, "refclk");
219 	if (IS_ERR(phy->refclk))
220 		return PTR_ERR(phy->refclk);
221 	error = clk_prepare(phy->refclk);
225 	pm_runtime_enable(phy->dev);
226 	generic_phy = devm_phy_create(phy->dev, NULL, &ops);
232 	phy_set_drvdata(generic_phy, phy);
234 	phy_provider = devm_of_phy_provider_register(phy->dev,
241 	usb_add_phy_dev(&phy->phy);
246 	pm_runtime_disable(phy->dev);
247 	clk_unprepare(phy->refclk);
253 	struct dm816x_usb_phy *phy = platform_get_drvdata(pdev);
255 	usb_remove_phy(&phy->phy);
256 	pm_runtime_disable(phy->dev);
257 	clk_unprepare(phy->refclk);
264 		.name	= "dm816x-usb-phy",
274 MODULE_DESCRIPTION("dm816x usb phy driver");