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.h>
   8#include <linux/of_platform.h>
   9#include <linux/mfd/syscon.h>
  10#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
  11#include <linux/regmap.h>
  12#include <asm/mach/arch.h>
  13#include <asm/mach/map.h>
  14
  15#include "common.h"
  16#include "cpuidle.h"
  17#include "hardware.h"
  18
  19static void __init imx6sl_fec_init(void)
  20{
  21        struct regmap *gpr;
  22
  23        /* set FEC clock from internal PLL clock source */
  24        gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
  25        if (!IS_ERR(gpr)) {
  26                regmap_update_bits(gpr, IOMUXC_GPR1,
  27                        IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
  28                regmap_update_bits(gpr, IOMUXC_GPR1,
  29                        IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
  30        } else {
  31                pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
  32        }
  33}
  34
  35static void __init imx6sl_init_late(void)
  36{
  37        /* imx6sl reuses imx6q cpufreq driver */
  38        if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
  39                platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
  40
  41        if (IS_ENABLED(CONFIG_SOC_IMX6SL) && cpu_is_imx6sl())
  42                imx6sl_cpuidle_init();
  43        else if (IS_ENABLED(CONFIG_SOC_IMX6SLL))
  44                imx6sx_cpuidle_init();
  45}
  46
  47static void __init imx6sl_init_machine(void)
  48{
  49        struct device *parent;
  50
  51        parent = imx_soc_device_init();
  52        if (parent == NULL)
  53                pr_warn("failed to initialize soc device\n");
  54
  55        of_platform_default_populate(NULL, NULL, parent);
  56
  57        if (cpu_is_imx6sl())
  58                imx6sl_fec_init();
  59        imx_anatop_init();
  60        imx6sl_pm_init();
  61}
  62
  63static void __init imx6sl_init_irq(void)
  64{
  65        imx_gpc_check_dt();
  66        imx_init_revision_from_anatop();
  67        imx_init_l2cache();
  68        imx_src_init();
  69        irqchip_init();
  70        if (cpu_is_imx6sl())
  71                imx6_pm_ccm_init("fsl,imx6sl-ccm");
  72        else
  73                imx6_pm_ccm_init("fsl,imx6sll-ccm");
  74}
  75
  76static const char * const imx6sl_dt_compat[] __initconst = {
  77        "fsl,imx6sl",
  78        "fsl,imx6sll",
  79        NULL,
  80};
  81
  82DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
  83        .l2c_aux_val    = 0,
  84        .l2c_aux_mask   = ~0,
  85        .init_irq       = imx6sl_init_irq,
  86        .init_machine   = imx6sl_init_machine,
  87        .init_late      = imx6sl_init_late,
  88        .dt_compat      = imx6sl_dt_compat,
  89MACHINE_END
  90