arch/arm/mach-kirkwood/board-km_kirkwood.c

   1 /*
   2  * Copyright 2012 2012 KEYMILE AG, CH-3097 Bern
   3  * Valentin Longchamp <valentin.longchamp@keymile.com>
   4  *
   5  * arch/arm/mach-kirkwood/board-km_kirkwood.c
   6  *
   7  * Keymile km_kirkwood Reference Desing Init for drivers not converted to
   8  * flattened device tree yet.
   9  *
  10  * This file is licensed under the terms of the GNU General Public
  11  * License version 2.  This program is licensed "as is" without any
  12  * warranty of any kind, whether express or implied.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/mv643xx_eth.h>
  18 #include <linux/clk.h>
  19 #include <linux/clk-private.h>
  20 #include "common.h"
  21
  22 static struct mv643xx_eth_platform_data km_kirkwood_ge00_data = {
  23         .phy_addr       = MV643XX_ETH_PHY_ADDR(0),
  24 };
  25
  26 void __init km_kirkwood_init(void)
  27 {
  28         struct clk *sata_clk;
  29         /*
  30          * Our variant of kirkwood (integrated in the Bobcat) hangs on accessing
  31          * SATA bits (14-15) of the Clock Gating Control Register. Since these
  32          * devices are also not present in this variant, their clocks get
  33          * disabled because unused when clk_disable_unused() gets called.
  34          * That's why we change the flags to these clocks to CLK_IGNORE_UNUSED
  35          */
  36         sata_clk = clk_get_sys("sata_mv.0", "0");
  37         if (!IS_ERR(sata_clk))
  38                 sata_clk->flags |= CLK_IGNORE_UNUSED;
  39         sata_clk = clk_get_sys("sata_mv.0", "1");
  40         if (!IS_ERR(sata_clk))
  41                 sata_clk->flags |= CLK_IGNORE_UNUSED;
  42
  43         kirkwood_ge00_init(&km_kirkwood_ge00_data);
  44 }