1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *	phy-mvebu-sata.c: SATA Phy driver for the Marvell mvebu SoCs.
11 #include <linux/phy/phy.h>
29 static int phy_mvebu_sata_power_on(struct phy *phy)  in phy_mvebu_sata_power_on()  argument
31 	struct priv *priv = phy_get_drvdata(phy);  in phy_mvebu_sata_power_on()
34 	clk_prepare_enable(priv->clk);  in phy_mvebu_sata_power_on()
37 	reg = readl(priv->base + SATA_PHY_MODE_2);  in phy_mvebu_sata_power_on()
40 	writel(reg , priv->base + SATA_PHY_MODE_2);  in phy_mvebu_sata_power_on()
42 	/* Enable PHY */  in phy_mvebu_sata_power_on()
43 	reg = readl(priv->base + SATA_IF_CTRL);  in phy_mvebu_sata_power_on()
45 	writel(reg, priv->base + SATA_IF_CTRL);  in phy_mvebu_sata_power_on()
47 	clk_disable_unprepare(priv->clk);  in phy_mvebu_sata_power_on()
52 static int phy_mvebu_sata_power_off(struct phy *phy)  in phy_mvebu_sata_power_off()  argument
54 	struct priv *priv = phy_get_drvdata(phy);  in phy_mvebu_sata_power_off()
57 	clk_prepare_enable(priv->clk);  in phy_mvebu_sata_power_off()
60 	reg = readl(priv->base + SATA_PHY_MODE_2);  in phy_mvebu_sata_power_off()
63 	writel(reg, priv->base + SATA_PHY_MODE_2);  in phy_mvebu_sata_power_off()
65 	/* Disable PHY */  in phy_mvebu_sata_power_off()
66 	reg = readl(priv->base + SATA_IF_CTRL);  in phy_mvebu_sata_power_off()
68 	writel(reg, priv->base + SATA_IF_CTRL);  in phy_mvebu_sata_power_off()
70 	clk_disable_unprepare(priv->clk);  in phy_mvebu_sata_power_off()
85 	struct phy *phy;  in phy_mvebu_sata_probe()  local
87 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in phy_mvebu_sata_probe()
89 		return -ENOMEM;  in phy_mvebu_sata_probe()
91 	priv->base = devm_platform_ioremap_resource(pdev, 0);  in phy_mvebu_sata_probe()
92 	if (IS_ERR(priv->base))  in phy_mvebu_sata_probe()
93 		return PTR_ERR(priv->base);  in phy_mvebu_sata_probe()
95 	priv->clk = devm_clk_get(&pdev->dev, "sata");  in phy_mvebu_sata_probe()
96 	if (IS_ERR(priv->clk))  in phy_mvebu_sata_probe()
97 		return PTR_ERR(priv->clk);  in phy_mvebu_sata_probe()
99 	phy = devm_phy_create(&pdev->dev, NULL, &phy_mvebu_sata_ops);  in phy_mvebu_sata_probe()
100 	if (IS_ERR(phy))  in phy_mvebu_sata_probe()
101 		return PTR_ERR(phy);  in phy_mvebu_sata_probe()
103 	phy_set_drvdata(phy, priv);  in phy_mvebu_sata_probe()
105 	phy_provider = devm_of_phy_provider_register(&pdev->dev,  in phy_mvebu_sata_probe()
111 	phy_mvebu_sata_power_off(phy);  in phy_mvebu_sata_probe()
117 	{ .compatible = "marvell,mvebu-sata-phy" },
124 		.name	= "phy-mvebu-sata",