arch/arm/mach-omap2/omap3/emac.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *
   4  * DaVinci EMAC initialization.
   5  *
   6  * (C) Copyright 2011, Ilya Yanok, Emcraft Systems
   7  */
   8
   9 #include <common.h>
  10 #include <asm/io.h>
  11 #include <asm/arch/am35x_def.h>
  12
  13 /*
  14  * Initializes on-chip ethernet controllers.
  15  * to override, implement board_eth_init()
  16  */
  17 int cpu_eth_init(bd_t *bis)
  18 {
  19         u32 reset;
  20
  21         /* ensure that the module is out of reset */
  22         reset = readl(&am35x_scm_general_regs->ip_sw_reset);
  23         reset &= ~CPGMACSS_SW_RST;
  24         writel(reset, &am35x_scm_general_regs->ip_sw_reset);
  25
  26         return 0;
  27 }