arch/arm/mach-imx/mach-imx53.c

   1 /*
   2  * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
   3  * Copyright 2011 Linaro Ltd.
   4  *
   5  * The code contained herein is licensed under the GNU General Public
   6  * License. You may obtain a copy of the GNU General Public License
   7  * Version 2 or later at the following locations:
   8  *
   9  * http://www.opensource.org/licenses/gpl-license.html
  10  * http://www.gnu.org/copyleft/gpl.html
  11  */
  12
  13 #include <linux/clk.h>
  14 #include <linux/clkdev.h>
  15 #include <linux/err.h>
  16 #include <linux/io.h>
  17 #include <linux/irq.h>
  18 #include <linux/of_irq.h>
  19 #include <linux/of_platform.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/time.h>
  22
  23 #include "common.h"
  24 #include "hardware.h"
  25 #include "mx53.h"
  26
  27 static void __init imx53_qsb_init(void)
  28 {
  29         struct clk *clk;
  30
  31         clk = clk_get_sys(NULL, "ssi_ext1");
  32         if (IS_ERR(clk)) {
  33                 pr_err("failed to get clk ssi_ext1\n");
  34                 return;
  35         }
  36
  37         clk_register_clkdev(clk, NULL, "0-000a");
  38 }
  39
  40 static void __init imx53_dt_init(void)
  41 {
  42         mxc_arch_reset_init_dt();
  43
  44         if (of_machine_is_compatible("fsl,imx53-qsb"))
  45                 imx53_qsb_init();
  46
  47         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  48 }
  49
  50 static const char *imx53_dt_board_compat[] __initdata = {
  51         "fsl,imx53",
  52         NULL
  53 };
  54
  55 static void __init imx53_timer_init(void)
  56 {
  57         mx53_clocks_init_dt();
  58 }
  59
  60 DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)")
  61         .map_io         = mx53_map_io,
  62         .init_early     = imx53_init_early,
  63         .init_irq       = mx53_init_irq,
  64         .handle_irq     = imx53_handle_irq,
  65         .init_time      = imx53_timer_init,
  66         .init_machine   = imx53_dt_init,
  67         .init_late      = imx53_init_late,
  68         .dt_compat      = imx53_dt_board_compat,
  69         .restart        = mxc_restart,
  70 MACHINE_END