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 "mx53.h"
  25
  26 static void __init imx53_qsb_init(void)
  27 {
  28         struct clk *clk;
  29
  30         clk = clk_get_sys(NULL, "ssi_ext1");
  31         if (IS_ERR(clk)) {
  32                 pr_err("failed to get clk ssi_ext1\n");
  33                 return;
  34         }
  35
  36         clk_register_clkdev(clk, NULL, "0-000a");
  37 }
  38
  39 static void __init imx53_dt_init(void)
  40 {
  41         if (of_machine_is_compatible("fsl,imx53-qsb"))
  42                 imx53_qsb_init();
  43
  44         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  45 }
  46
  47 static void __init imx53_timer_init(void)
  48 {
  49         mx53_clocks_init_dt();
  50 }
  51
  52 static struct sys_timer imx53_timer = {
  53         .init = imx53_timer_init,
  54 };
  55
  56 static const char *imx53_dt_board_compat[] __initdata = {
  57         "fsl,imx53",
  58         NULL
  59 };
  60
  61 DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)")
  62         .map_io         = mx53_map_io,
  63         .init_early     = imx53_init_early,
  64         .init_irq       = mx53_init_irq,
  65         .handle_irq     = imx53_handle_irq,
  66         .timer          = &imx53_timer,
  67         .init_machine   = imx53_dt_init,
  68         .init_late      = imx53_init_late,
  69         .dt_compat      = imx53_dt_board_compat,
  70         .restart        = mxc_restart,
  71 MACHINE_END