linux/arch/arm/mach-imx/mach-vf610.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright 2012-2013 Freescale Semiconductor, Inc.
   4 */
   5
   6#include <linux/of_address.h>
   7#include <linux/of_platform.h>
   8#include <linux/io.h>
   9
  10#include <linux/irqchip.h>
  11#include <asm/mach/arch.h>
  12#include <asm/hardware/cache-l2x0.h>
  13
  14#include "common.h"
  15#include "hardware.h"
  16
  17#define MSCM_CPxCOUNT           0x00c
  18#define MSCM_CPxCFG1            0x014
  19
  20static void __init vf610_detect_cpu(void)
  21{
  22        struct device_node *np;
  23        u32 cpxcount, cpxcfg1;
  24        unsigned int cpu_type;
  25        void __iomem *mscm;
  26
  27        np = of_find_compatible_node(NULL, NULL, "fsl,vf610-mscm-cpucfg");
  28        if (WARN_ON(!np))
  29                return;
  30
  31        mscm = of_iomap(np, 0);
  32        of_node_put(np);
  33
  34        if (WARN_ON(!mscm))
  35                return;
  36
  37        cpxcount = readl_relaxed(mscm + MSCM_CPxCOUNT);
  38        cpxcfg1  = readl_relaxed(mscm + MSCM_CPxCFG1);
  39
  40        iounmap(mscm);
  41
  42        cpu_type = cpxcount ? MXC_CPU_VF600 : MXC_CPU_VF500;
  43
  44        if (cpxcfg1)
  45                cpu_type |= MXC_CPU_VFx10;
  46
  47        mxc_set_cpu_type(cpu_type);
  48}
  49
  50static void __init vf610_init_machine(void)
  51{
  52        vf610_detect_cpu();
  53
  54        of_platform_default_populate(NULL, NULL, NULL);
  55}
  56
  57static const char * const vf610_dt_compat[] __initconst = {
  58        "fsl,vf500",
  59        "fsl,vf510",
  60        "fsl,vf600",
  61        "fsl,vf610",
  62        "fsl,vf610m4",
  63        NULL,
  64};
  65
  66DT_MACHINE_START(VYBRID_VF610, "Freescale Vybrid VF5xx/VF6xx (Device Tree)")
  67        .l2c_aux_val    = 0,
  68        .l2c_aux_mask   = ~0,
  69        .init_machine   = vf610_init_machine,
  70        .dt_compat      = vf610_dt_compat,
  71MACHINE_END
  72