arch/arm/mach-imx/mach-imx6sl.c

   1 /*
   2  * Copyright 2013 Freescale Semiconductor, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  */
   9
  10 #include <linux/irqchip.h>
  11 #include <linux/of.h>
  12 #include <linux/of_platform.h>
  13 #include <linux/mfd/syscon.h>
  14 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
  15 #include <linux/regmap.h>
  16 #include <asm/mach/arch.h>
  17 #include <asm/mach/map.h>
  18
  19 #include "common.h"
  20
  21 static void __init imx6sl_fec_init(void)
  22 {
  23         struct regmap *gpr;
  24
  25         /* set FEC clock from internal PLL clock source */
  26         gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
  27         if (!IS_ERR(gpr)) {
  28                 regmap_update_bits(gpr, IOMUXC_GPR1,
  29                         IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
  30                 regmap_update_bits(gpr, IOMUXC_GPR1,
  31                         IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
  32         } else {
  33                 pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
  34         }
  35 }
  36
  37 static void __init imx6sl_init_machine(void)
  38 {
  39         struct device *parent;
  40
  41         mxc_arch_reset_init_dt();
  42
  43         parent = imx_soc_device_init();
  44         if (parent == NULL)
  45                 pr_warn("failed to initialize soc device\n");
  46
  47         of_platform_populate(NULL, of_default_bus_match_table, NULL, parent);
  48
  49         imx6sl_fec_init();
  50 }
  51
  52 static void __init imx6sl_init_irq(void)
  53 {
  54         imx_init_revision_from_anatop();
  55         imx_init_l2cache();
  56         imx_src_init();
  57         imx_gpc_init();
  58         irqchip_init();
  59 }
  60
  61 static const char *imx6sl_dt_compat[] __initdata = {
  62         "fsl,imx6sl",
  63         NULL,
  64 };
  65
  66 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
  67         .map_io         = debug_ll_io_init,
  68         .init_irq       = imx6sl_init_irq,
  69         .init_machine   = imx6sl_init_machine,
  70         .dt_compat      = imx6sl_dt_compat,
  71         .restart        = mxc_restart,
  72 MACHINE_END