board/xilinx/common/board.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2014 - 2019 Xilinx, Inc.
   4  * Michal Simek <michal.simek@xilinx.com>
   5  */
   6
   7 #include <common.h>
   8 #include <dm/uclass.h>
   9 #include <i2c.h>
  10
  11 int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
  12 {
  13         int ret = -EINVAL;
  14
  15 #if defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET)
  16         struct udevice *dev;
  17         ofnode eeprom;
  18
  19         eeprom = ofnode_get_chosen_node("xlnx,eeprom");
  20         if (!ofnode_valid(eeprom))
  21                 return -ENODEV;
  22
  23         debug("%s: Path to EEPROM %s\n", __func__,
  24               ofnode_get_chosen_prop("xlnx,eeprom"));
  25
  26         ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, &dev);
  27         if (ret)
  28                 return ret;
  29
  30         ret = dm_i2c_read(dev, CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET, ethaddr, 6);
  31         if (ret)
  32                 debug("%s: I2C EEPROM MAC address read failed\n", __func__);
  33         else
  34                 debug("%s: I2C EEPROM MAC %pM\n", __func__, ethaddr);
  35 #endif
  36
  37         return ret;
  38 }