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

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright 2013 Freescale Semiconductor, Inc.
   4 */
   5
   6#include <linux/irqchip.h>
   7#include <linux/of_platform.h>
   8#include <linux/mfd/syscon.h>
   9#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
  10#include <linux/regmap.h>
  11#include <asm/mach/arch.h>
  12#include <asm/mach/map.h>
  13
  14#include "common.h"
  15#include "cpuidle.h"
  16#include "hardware.h"
  17
  18static void __init imx6sl_fec_init(void)
  19{
  20        struct regmap *gpr;
  21
  22        /* set FEC clock from internal PLL clock source */
  23        gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
  24        if (!IS_ERR(gpr)) {
  25                regmap_update_bits(gpr, IOMUXC_GPR1,
  26                        IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
  27                regmap_update_bits(gpr, IOMUXC_GPR1,
  28                        IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
  29        } else {
  30                pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
  31        }
  32}
  33
  34static void __init imx6sl_init_late(void)
  35{
  36        /* imx6sl reuses imx6q cpufreq driver */
  37        if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
  38                platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
  39
  40        if (IS_ENABLED(CONFIG_SOC_IMX6SL) && cpu_is_imx6sl())
  41                imx6sl_cpuidle_init();
  42        else if (IS_ENABLED(CONFIG_SOC_IMX6SLL))
  43                imx6sx_cpuidle_init();
  44}
  45
  46static void __init imx6sl_init_machine(void)
  47{
  48        of_platform_default_populate(NULL, NULL, NULL);
  49
  50        if (cpu_is_imx6sl())
  51                imx6sl_fec_init();
  52        imx_anatop_init();
  53        imx6sl_pm_init();
  54}
  55
  56static void __init imx6sl_init_irq(void)
  57{
  58        imx_gpc_check_dt();
  59        imx_init_revision_from_anatop();
  60        imx_init_l2cache();
  61        imx_src_init();
  62        irqchip_init();
  63        if (cpu_is_imx6sl())
  64                imx6_pm_ccm_init("fsl,imx6sl-ccm");
  65        else
  66                imx6_pm_ccm_init("fsl,imx6sll-ccm");
  67}
  68
  69static const char * const imx6sl_dt_compat[] __initconst = {
  70        "fsl,imx6sl",
  71        "fsl,imx6sll",
  72        NULL,
  73};
  74
  75DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
  76        .l2c_aux_val    = 0,
  77        .l2c_aux_mask   = ~0,
  78        .init_irq       = imx6sl_init_irq,
  79        .init_machine   = imx6sl_init_machine,
  80        .init_late      = imx6sl_init_late,
  81        .dt_compat      = imx6sl_dt_compat,
  82MACHINE_END
  83