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Linux/arch/arm/mach-imx/mach-imx6sl.c

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  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 
 22 static void __init imx6sl_fec_init(void)
 23 {
 24         struct regmap *gpr;
 25 
 26         /* set FEC clock from internal PLL clock source */
 27         gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
 28         if (!IS_ERR(gpr)) {
 29                 regmap_update_bits(gpr, IOMUXC_GPR1,
 30                         IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
 31                 regmap_update_bits(gpr, IOMUXC_GPR1,
 32                         IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
 33         } else {
 34                 pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
 35         }
 36 }
 37 
 38 static void __init imx6sl_init_late(void)
 39 {
 40         /* imx6sl reuses imx6q cpufreq driver */
 41         if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
 42                 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
 43 
 44         imx6sl_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_populate(NULL, of_default_bus_match_table, NULL, parent);
 56 
 57         imx6sl_fec_init();
 58         imx_anatop_init();
 59         imx6sl_pm_init();
 60 }
 61 
 62 static void __init imx6sl_init_irq(void)
 63 {
 64         imx_gpc_check_dt();
 65         imx_init_revision_from_anatop();
 66         imx_init_l2cache();
 67         imx_src_init();
 68         irqchip_init();
 69         imx6_pm_ccm_init("fsl,imx6sl-ccm");
 70 }
 71 
 72 static const char * const imx6sl_dt_compat[] __initconst = {
 73         "fsl,imx6sl",
 74         NULL,
 75 };
 76 
 77 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
 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
 83 

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