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
  18 static 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
  34 static 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
  46 static 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
  56 static 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
  69 static const char * const imx6sl_dt_compat[] __initconst = {
  70         "fsl,imx6sl",
  71         "fsl,imx6sll",
  72         NULL,
  73 };
  74
  75 DT_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,
  82 MACHINE_END