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
  19 static 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
  35 static 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
  47 static 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
  63 static 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
  76 static const char * const imx6sl_dt_compat[] __initconst = {
  77         "fsl,imx6sl",
  78         "fsl,imx6sll",
  79         NULL,
  80 };
  81
  82 DT_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,
  89 MACHINE_END