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 #include "cpuidle.h"
  21
  22 static void __init imx6sl_fec_init(void)
  23 {
  24         struct regmap *gpr;
  25
  26         /* set FEC clock from internal PLL clock source */
  27         gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
  28         if (!IS_ERR(gpr)) {
  29                 regmap_update_bits(gpr, IOMUXC_GPR1,
  30                         IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
  31                 regmap_update_bits(gpr, IOMUXC_GPR1,
  32                         IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
  33         } else {
  34                 pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
  35         }
  36 }
  37
  38 static void __init imx6sl_init_late(void)
  39 {
  40         /* imx6sl reuses imx6q cpufreq driver */
  41         if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
  42                 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
  43
  44         imx6sl_cpuidle_init();
  45 }
  46
  47 static void __init imx6sl_init_machine(void)
  48 {
  49         struct device *parent;
  50
  51         mxc_arch_reset_init_dt();
  52
  53         parent = imx_soc_device_init();
  54         if (parent == NULL)
  55                 pr_warn("failed to initialize soc device\n");
  56
  57         of_platform_populate(NULL, of_default_bus_match_table, NULL, parent);
  58
  59         imx6sl_fec_init();
  60         imx_anatop_init();
  61         imx6sl_pm_init();
  62 }
  63
  64 static void __init imx6sl_init_irq(void)
  65 {
  66         imx_init_revision_from_anatop();
  67         imx_init_l2cache();
  68         imx_src_init();
  69         imx_gpc_init();
  70         irqchip_init();
  71 }
  72
  73 static const char *imx6sl_dt_compat[] __initconst = {
  74         "fsl,imx6sl",
  75         NULL,
  76 };
  77
  78 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
  79         .map_io         = debug_ll_io_init,
  80         .init_irq       = imx6sl_init_irq,
  81         .init_machine   = imx6sl_init_machine,
  82         .init_late      = imx6sl_init_late,
  83         .dt_compat      = imx6sl_dt_compat,
  84         .restart        = mxc_restart,
  85 MACHINE_END