1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * arch/arm/mach-ks8695/cpu.c
5 * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
6 * Copyright (C) 2006 Simtec Electronics
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/init.h>
16 #include <mach/hardware.h>
17 #include <asm/mach/arch.h>
18 #include <asm/mach/map.h>
21 #include <mach/regs-misc.h>
24 static struct map_desc ks8695_io_desc[] __initdata = {
26 .virtual = (unsigned long)KS8695_IO_VA,
27 .pfn = __phys_to_pfn(KS8695_IO_PA),
28 .length = KS8695_IO_SIZE,
33 static void __init ks8695_processor_info(void)
35 unsigned long id, rev;
37 id = __raw_readl(KS8695_MISC_VA + KS8695_DID);
38 rev = __raw_readl(KS8695_MISC_VA + KS8695_RID);
40 printk("KS8695 ID=%04lx SubID=%02lx Revision=%02lx\n", (id & DID_ID), (rev & RID_SUBID), (rev & RID_REVISION));
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 };
46 static void __init ks8695_clock_info(void)
48 unsigned int scdc = __raw_readl(KS8695_SYS_VA + KS8695_CLKCON) & CLKCON_SCDC;
50 printk("Clocks: System %u MHz, CPU %u MHz\n",
51 sysclk[scdc] / 1000000, cpuclk[scdc] / 1000000);
54 void __init ks8695_map_io(void)
56 iotable_init(ks8695_io_desc, ARRAY_SIZE(ks8695_io_desc));
58 ks8695_processor_info();