diff options
Diffstat (limited to 'drivers/usb/phy/phy-generic.c')
| -rw-r--r-- | drivers/usb/phy/phy-generic.c | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index 89d6e7a5fdb7..74ba88297991 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * NOP USB transceiver for all USB transceiver which are either built-in * into USB IP or which are mostly autonomous. @@ -5,20 +6,6 @@ * Copyright (C) 2009 Texas Instruments Inc * Author: Ajay Kumar Gupta <ajay.gupta@ti.com> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Current status: * This provides a "nop" transceiver for PHYs which are * autonomous such as isp1504, isp1707, etc. @@ -224,7 +211,7 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop, int err = 0; u32 clk_rate = 0; - bool needs_vcc = false; + bool needs_vcc = false, needs_clk = false; if (dev->of_node) { struct device_node *node = dev->of_node; @@ -233,6 +220,7 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop, clk_rate = 0; needs_vcc = of_property_read_bool(node, "vcc-supply"); + needs_clk = of_property_read_bool(node, "clocks"); nop->gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_ASIS); err = PTR_ERR_OR_ZERO(nop->gpiod_reset); @@ -275,6 +263,8 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop, if (IS_ERR(nop->clk)) { dev_dbg(dev, "Can't get phy clock: %ld\n", PTR_ERR(nop->clk)); + if (needs_clk) + return PTR_ERR(nop->clk); } if (!IS_ERR(nop->clk) && clk_rate) { |