diff options
Diffstat (limited to 'drivers/phy/samsung/phy-s5pv210-usb2.c')
| -rw-r--r-- | drivers/phy/samsung/phy-s5pv210-usb2.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/phy/samsung/phy-s5pv210-usb2.c b/drivers/phy/samsung/phy-s5pv210-usb2.c index f6f72339bbc3..32be62e49804 100644 --- a/drivers/phy/samsung/phy-s5pv210-usb2.c +++ b/drivers/phy/samsung/phy-s5pv210-usb2.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Samsung SoC USB 1.1/2.0 PHY driver - S5PV210 support * * Copyright (C) 2013 Samsung Electronics Co., Ltd. * Authors: Kamil Debski <k.debski@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> @@ -142,6 +139,10 @@ static void s5pv210_phy_pwr(struct samsung_usb2_phy_instance *inst, bool on) udelay(10); rst &= ~rstbits; writel(rst, drv->reg_phy + S5PV210_UPHYRST); + /* The following delay is necessary for the reset sequence to be + * completed + */ + udelay(80); } else { pwr = readl(drv->reg_phy + S5PV210_UPHYPWR); pwr |= phypwr; |