[mirror_ubuntu-hirsute-kernel.git] / arch / arm / mach-ks8695 / cpu.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * arch/arm/mach-ks8695/cpu.c
 *
 * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
 * Copyright (C) 2006 Simtec Electronics
 *
 * KS8695 CPU support
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/io.h>

#include <mach/hardware.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include "regs-sys.h"
#include <mach/regs-misc.h>


static struct map_desc ks8695_io_desc[] __initdata = {
	{
		.virtual	= (unsigned long)KS8695_IO_VA,
		.pfn		= __phys_to_pfn(KS8695_IO_PA),
		.length		= KS8695_IO_SIZE,
		.type		= MT_DEVICE,
	}
};

static void __init ks8695_processor_info(void)
{
	unsigned long id, rev;

	id = __raw_readl(KS8695_MISC_VA + KS8695_DID);
	rev = __raw_readl(KS8695_MISC_VA + KS8695_RID);

	printk("KS8695 ID=%04lx  SubID=%02lx  Revision=%02lx\n", (id & DID_ID), (rev & RID_SUBID), (rev & RID_REVISION));
}

static unsigned int sysclk[8] = { 125000000, 100000000, 62500000, 50000000, 41700000, 33300000, 31300000, 25000000 };
static unsigned int cpuclk[8] = { 166000000, 166000000, 83000000, 83000000, 55300000, 55300000, 41500000, 41500000 };

static void __init ks8695_clock_info(void)
{
	unsigned int scdc = __raw_readl(KS8695_SYS_VA + KS8695_CLKCON) & CLKCON_SCDC;

	printk("Clocks: System %u MHz, CPU %u MHz\n",
			sysclk[scdc] / 1000000, cpuclk[scdc] / 1000000);
}

void __init ks8695_map_io(void)
{
	iotable_init(ks8695_io_desc, ARRAY_SIZE(ks8695_io_desc));

	ks8695_processor_info();
	ks8695_clock_info();
}
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
c53c9cf6 AV	2	/*
	3	* arch/arm/mach-ks8695/cpu.c
	4	*
	5	* Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
	6	* Copyright (C) 2006 Simtec Electronics
	7	*
	8	* KS8695 CPU support
c53c9cf6 AV	9	*/
	10
	11	#include <linux/kernel.h>
	12	#include <linux/module.h>
	13	#include <linux/init.h>
fced80c7	14	#include <linux/io.h>
c53c9cf6	15
a09e64fb	16	#include <mach/hardware.h>
c53c9cf6 AV	17	#include <asm/mach/arch.h>
	18	#include <asm/mach/map.h>
	19
d8b2823e	20	#include "regs-sys.h"
a09e64fb	21	#include <mach/regs-misc.h>
c53c9cf6 AV	22
c53c9cf6 AV	23
6ad7313b	24	static struct map_desc ks8695_io_desc[] __initdata = {
c53c9cf6	25	{
c72ecbec	26	.virtual = (unsigned long)KS8695_IO_VA,
c53c9cf6 AV	27	.pfn = __phys_to_pfn(KS8695_IO_PA),
	28	.length = KS8695_IO_SIZE,
	29	.type = MT_DEVICE,
	30	}
	31	};
	32
	33	static void __init ks8695_processor_info(void)
	34	{
	35	unsigned long id, rev;
	36
	37	id = __raw_readl(KS8695_MISC_VA + KS8695_DID);
	38	rev = __raw_readl(KS8695_MISC_VA + KS8695_RID);
	39
	40	printk("KS8695 ID=%04lx SubID=%02lx Revision=%02lx\n", (id & DID_ID), (rev & RID_SUBID), (rev & RID_REVISION));
	41	}
	42
	43	static unsigned int sysclk[8] = { 125000000, 100000000, 62500000, 50000000, 41700000, 33300000, 31300000, 25000000 };
	44	static unsigned int cpuclk[8] = { 166000000, 166000000, 83000000, 83000000, 55300000, 55300000, 41500000, 41500000 };
	45
	46	static void __init ks8695_clock_info(void)
	47	{
	48	unsigned int scdc = __raw_readl(KS8695_SYS_VA + KS8695_CLKCON) & CLKCON_SCDC;
	49
	50	printk("Clocks: System %u MHz, CPU %u MHz\n",
	51	sysclk[scdc] / 1000000, cpuclk[scdc] / 1000000);
	52	}
	53
	54	void __init ks8695_map_io(void)
	55	{
	56	iotable_init(ks8695_io_desc, ARRAY_SIZE(ks8695_io_desc));
	57
	58	ks8695_processor_info();
	59	ks8695_clock_info();
	60	}