1 // SPDX-License-Identifier: GPL-2.0-only
20 #include <linux/phy/phy.h>
42 	struct phy		*phy;  member
56 static int mv_hsic_phy_init(struct phy *phy)  in mv_hsic_phy_init()  argument
58 	struct mv_hsic_phy *mv_phy = phy_get_drvdata(phy);  in mv_hsic_phy_init()
59 	struct platform_device *pdev = mv_phy->pdev;  in mv_hsic_phy_init()
60 	void __iomem *base = mv_phy->base;  in mv_hsic_phy_init()
63 	clk_prepare_enable(mv_phy->clk);  in mv_hsic_phy_init()
76 	/* Make sure PHY PLL is locked */  in mv_hsic_phy_init()
80 		dev_err(&pdev->dev, "HSIC PHY PLL not locked after 100mS.");  in mv_hsic_phy_init()
81 		clk_disable_unprepare(mv_phy->clk);  in mv_hsic_phy_init()
87 static int mv_hsic_phy_power_on(struct phy *phy)  in mv_hsic_phy_power_on()  argument
89 	struct mv_hsic_phy *mv_phy = phy_get_drvdata(phy);  in mv_hsic_phy_power_on()
90 	struct platform_device *pdev = mv_phy->pdev;  in mv_hsic_phy_power_on()
91 	void __iomem *base = mv_phy->base;  in mv_hsic_phy_power_on()
98 	reg |= PHY_28NM_HSIC_S2H_HSIC_EN;	/* Enable HSIC PHY */  in mv_hsic_phy_power_on()
110 	/* Make sure PHY Calibration is ready */  in mv_hsic_phy_power_on()
114 		dev_warn(&pdev->dev, "HSIC PHY READY not set after 100mS.");  in mv_hsic_phy_power_on()
118 	/* Waiting for HSIC connect int*/  in mv_hsic_phy_power_on()
122 		dev_warn(&pdev->dev, "HSIC wait for connect interrupt timeout.");  in mv_hsic_phy_power_on()
127 static int mv_hsic_phy_power_off(struct phy *phy)  in mv_hsic_phy_power_off()  argument
129 	struct mv_hsic_phy *mv_phy = phy_get_drvdata(phy);  in mv_hsic_phy_power_off()
130 	void __iomem *base = mv_phy->base;  in mv_hsic_phy_power_off()
138 static int mv_hsic_phy_exit(struct phy *phy)  in mv_hsic_phy_exit()  argument
140 	struct mv_hsic_phy *mv_phy = phy_get_drvdata(phy);  in mv_hsic_phy_exit()
141 	void __iomem *base = mv_phy->base;  in mv_hsic_phy_exit()
148 	clk_disable_unprepare(mv_phy->clk);  in mv_hsic_phy_exit()
166 	mv_phy = devm_kzalloc(&pdev->dev, sizeof(*mv_phy), GFP_KERNEL);  in mv_hsic_phy_probe()
168 		return -ENOMEM;  in mv_hsic_phy_probe()
170 	mv_phy->pdev = pdev;  in mv_hsic_phy_probe()
172 	mv_phy->clk = devm_clk_get(&pdev->dev, NULL);  in mv_hsic_phy_probe()
173 	if (IS_ERR(mv_phy->clk)) {  in mv_hsic_phy_probe()
174 		dev_err(&pdev->dev, "failed to get clock.\n");  in mv_hsic_phy_probe()
175 		return PTR_ERR(mv_phy->clk);  in mv_hsic_phy_probe()
178 	mv_phy->base = devm_platform_ioremap_resource(pdev, 0);  in mv_hsic_phy_probe()
179 	if (IS_ERR(mv_phy->base))  in mv_hsic_phy_probe()
180 		return PTR_ERR(mv_phy->base);  in mv_hsic_phy_probe()
182 	mv_phy->phy = devm_phy_create(&pdev->dev, pdev->dev.of_node, &hsic_ops);  in mv_hsic_phy_probe()
183 	if (IS_ERR(mv_phy->phy))  in mv_hsic_phy_probe()
184 		return PTR_ERR(mv_phy->phy);  in mv_hsic_phy_probe()
186 	phy_set_drvdata(mv_phy->phy, mv_phy);  in mv_hsic_phy_probe()
188 	phy_provider = devm_of_phy_provider_register(&pdev->dev, of_phy_simple_xlate);  in mv_hsic_phy_probe()
193 	{ .compatible = "marvell,pxa1928-hsic-phy", },
201 		.name   = "mv-hsic-phy",
208 MODULE_DESCRIPTION("Marvell HSIC phy driver");