drivers/phy/nop-phy.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
   4  * Written by Jean-Jacques Hiblot  <jjhiblot@ti.com>
   5  */
   6
   7 #include <clk.h>
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <dm/device.h>
  11 #include <dm/device_compat.h>
  12 #include <generic-phy.h>
  13
  14 struct nop_phy_priv {
  15         struct clk_bulk bulk;
  16 };
  17
  18 static int nop_phy_init(struct phy *phy)
  19 {
  20         struct nop_phy_priv *priv = dev_get_priv(phy->dev);
  21
  22         if (CONFIG_IS_ENABLED(CLK))
  23                 return clk_enable_bulk(&priv->bulk);
  24
  25         return 0;
  26 }
  27
  28 static int nop_phy_probe(struct udevice *dev)
  29 {
  30         struct nop_phy_priv *priv = dev_get_priv(dev);
  31         int ret;
  32
  33         if (CONFIG_IS_ENABLED(CLK)) {
  34                 ret = clk_get_bulk(dev, &priv->bulk);
  35                 if (ret < 0) {
  36                         dev_err(dev, "Failed to get clk: %d\n", ret);
  37                         return ret;
  38                 }
  39         }
  40
  41         return 0;
  42 }
  43
  44 static const struct udevice_id nop_phy_ids[] = {
  45         { .compatible = "nop-phy" },
  46         { .compatible = "usb-nop-xceiv" },
  47         { }
  48 };
  49
  50 static struct phy_ops nop_phy_ops = {
  51         .init = nop_phy_init,
  52 };
  53
  54 U_BOOT_DRIVER(nop_phy) = {
  55         .name   = "nop_phy",
  56         .id     = UCLASS_PHY,
  57         .of_match = nop_phy_ids,
  58         .ops = &nop_phy_ops,
  59         .probe = nop_phy_probe,
  60         .priv_auto      = sizeof(struct nop_phy_priv),
  61 };