LXR linux/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
  23static 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
  39static 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        if (IS_ENABLED(CONFIG_SOC_IMX6SL) && cpu_is_imx6sl())
  46                imx6sl_cpuidle_init();
  47        else if (IS_ENABLED(CONFIG_SOC_IMX6SLL))
  48                imx6sx_cpuidle_init();
  49}
  50
  51static void __init imx6sl_init_machine(void)
  52{
  53        struct device *parent;
  54
  55        parent = imx_soc_device_init();
  56        if (parent == NULL)
  57                pr_warn("failed to initialize soc device\n");
  58
  59        of_platform_default_populate(NULL, NULL, parent);
  60
  61        if (cpu_is_imx6sl())
  62                imx6sl_fec_init();
  63        imx_anatop_init();
  64        imx6sl_pm_init();
  65}
  66
  67static void __init imx6sl_init_irq(void)
  68{
  69        imx_gpc_check_dt();
  70        imx_init_revision_from_anatop();
  71        imx_init_l2cache();
  72        imx_src_init();
  73        irqchip_init();
  74        if (cpu_is_imx6sl())
  75                imx6_pm_ccm_init("fsl,imx6sl-ccm");
  76        else
  77                imx6_pm_ccm_init("fsl,imx6sll-ccm");
  78}
  79
  80static const char * const imx6sl_dt_compat[] __initconst = {
  81        "fsl,imx6sl",
  82        "fsl,imx6sll",
  83        NULL,
  84};
  85
  86DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
  87        .l2c_aux_val    = 0,
  88        .l2c_aux_mask   = ~0,
  89        .init_irq       = imx6sl_init_irq,
  90        .init_machine   = imx6sl_init_machine,
  91        .init_late      = imx6sl_init_late,
  92        .dt_compat      = imx6sl_dt_compat,
  93MACHINE_END
  94