1 // SPDX-License-Identifier: GPL-2.0
3 * Renesas USB driver RZ/A2 initialization and power control
5 * Copyright (C) 2019 Chris Brandt
6 * Copyright (C) 2019 Renesas Electronics Corporation
9 #include <linux/delay.h>
11 #include <linux/of_device.h>
12 #include <linux/phy/phy.h>
16 static int usbhs_rza2_hardware_init(struct platform_device *pdev)
18 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
19 struct phy *phy = phy_get(&pdev->dev, "usb");
28 static int usbhs_rza2_hardware_exit(struct platform_device *pdev)
30 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
32 phy_put(&pdev->dev, priv->phy);
38 static int usbhs_rza2_power_ctrl(struct platform_device *pdev,
39 void __iomem *base, int enable)
41 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
48 retval = phy_init(priv->phy);
49 usbhs_bset(priv, SUSPMODE, SUSPM, SUSPM);
50 udelay(100); /* Wait for PLL to become stable */
52 retval = phy_power_on(priv->phy);
54 usbhs_bset(priv, SUSPMODE, SUSPM, 0);
55 phy_power_off(priv->phy);
62 const struct renesas_usbhs_platform_info usbhs_rza2_plat_info = {
63 .platform_callback = {
64 .hardware_init = usbhs_rza2_hardware_init,
65 .hardware_exit = usbhs_rza2_hardware_exit,
66 .power_ctrl = usbhs_rza2_power_ctrl,
67 .get_id = usbhs_get_id_as_gadget,
72 .has_new_pipe_configs = 1,