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 #include "hardware.h"
  22
  23 static void __init imx6sl_fec_init(void)
  24 {
  25         struct regmap *gpr;
  26
  27         /* set FEC clock from internal PLL clock source */
  28         gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
  29         if (!IS_ERR(gpr)) {
  30                 regmap_update_bits(gpr, IOMUXC_GPR1,
  31                         IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
  32                 regmap_update_bits(gpr, IOMUXC_GPR1,
  33                         IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
  34         } else {
  35                 pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
  36         }
  37 }
  38
  39 static void __init imx6sl_init_late(void)
  40 {
  41         /* imx6sl reuses imx6q cpufreq driver */
  42         if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
  43                 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
  44
  45         imx6sl_cpuidle_init();
  46 }
  47
  48 static void __init imx6sl_init_machine(void)
  49 {
  50         struct device *parent;
  51
  52         parent = imx_soc_device_init();
  53         if (parent == NULL)
  54                 pr_warn("failed to initialize soc device\n");
  55
  56         of_platform_default_populate(NULL, NULL, parent);
  57
  58         if (cpu_is_imx6sl())
  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_gpc_check_dt();
  67         imx_init_revision_from_anatop();
  68         imx_init_l2cache();
  69         imx_src_init();
  70         irqchip_init();
  71         if (cpu_is_imx6sl())
  72                 imx6_pm_ccm_init("fsl,imx6sl-ccm");
  73         else
  74                 imx6_pm_ccm_init("fsl,imx6sll-ccm");
  75 }
  76
  77 static const char * const imx6sl_dt_compat[] __initconst = {
  78         "fsl,imx6sl",
  79         "fsl,imx6sll",
  80         NULL,
  81 };
  82
  83 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
  84         .l2c_aux_val    = 0,
  85         .l2c_aux_mask   = ~0,
  86         .init_irq       = imx6sl_init_irq,
  87         .init_machine   = imx6sl_init_machine,
  88         .init_late      = imx6sl_init_late,
  89         .dt_compat      = imx6sl_dt_compat,
  90 MACHINE_END