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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/arm/mach-imx/mach-vf610.c
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// SPDX-License-Identifier: GPL-2.0-or-later

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/*

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 * Copyright 2012-2013 Freescale Semiconductor, Inc.

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 */

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#include <linux/of_address.h>

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#include <linux/of_platform.h>

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#include <linux/io.h>

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#include <linux/irqchip.h>

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#include <asm/mach/arch.h>

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#include <asm/hardware/cache-l2x0.h>

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#include "common.h"

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#include "hardware.h"

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#define MSCM_CPxCOUNT		0x00c

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#define MSCM_CPxCFG1		0x014

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static void __init vf610_detect_cpu(void)

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{

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	struct device_node *np;

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	u32 cpxcount, cpxcfg1;

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	unsigned int cpu_type;

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	void __iomem *mscm;

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	np = of_find_compatible_node(NULL, NULL, "fsl,vf610-mscm-cpucfg");

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	if (WARN_ON(!np))

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		return;

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	mscm = of_iomap(np, 0);

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	of_node_put(np);

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	if (WARN_ON(!mscm))

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		return;

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	cpxcount = readl_relaxed(mscm + MSCM_CPxCOUNT);

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	cpxcfg1  = readl_relaxed(mscm + MSCM_CPxCFG1);

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	iounmap(mscm);

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	cpu_type = cpxcount ? MXC_CPU_VF600 : MXC_CPU_VF500;

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	if (cpxcfg1)

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		cpu_type |= MXC_CPU_VFx10;

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	mxc_set_cpu_type(cpu_type);

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}

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static void __init vf610_init_machine(void)

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{

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	vf610_detect_cpu();

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	of_platform_default_populate(NULL, NULL, NULL);

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}

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static const char * const vf610_dt_compat[] __initconst = {

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	"fsl,vf500",

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	"fsl,vf510",

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	"fsl,vf600",

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	"fsl,vf610",

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	"fsl,vf610m4",

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	NULL,

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};

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DT_MACHINE_START(VYBRID_VF610, "Freescale Vybrid VF5xx/VF6xx (Device Tree)")

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	.l2c_aux_val	= 0,

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	.l2c_aux_mask	= ~0,

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	.init_machine   = vf610_init_machine,

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	.dt_compat	= vf610_dt_compat,

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MACHINE_END

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