1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-pxa/generic.c
5 * Author: Nicolas Pitre
6 * Created: Jun 15, 2001
7 * Copyright: MontaVista Software Inc.
9 * Code common to all PXA machines.
11 * Since this file should be linked before any other machine specific file,
12 * the __initcall() here will be executed first. This serves as default
13 * initialization stuff for PXA machines which can be overridden later if
16 #include <linux/gpio.h>
17 #include <linux/module.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
21 #include <mach/hardware.h>
22 #include <asm/mach/map.h>
23 #include <asm/mach-types.h>
25 #include <mach/irqs.h>
26 #include <mach/reset.h>
27 #include <mach/smemc.h>
28 #include <mach/pxa3xx-regs.h>
31 #include <clocksource/pxa.h>
33 void clear_reset_status(unsigned int mask)
36 pxa2xx_clear_reset_status(mask);
38 /* RESET_STATUS_* has a 1:1 mapping with ARSR */
44 * For non device-tree builds, keep legacy timer init
46 void __init pxa_timer_init(void)
54 pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000));
58 * Get the clock frequency as reflected by CCCR and the turbo flag.
59 * We assume these values have been applied via a fcs.
60 * If info is not 0 we also display the current settings.
62 unsigned int get_clk_frequency_khz(int info)
65 return pxa25x_get_clk_frequency_khz(info);
66 else if (cpu_is_pxa27x())
67 return pxa27x_get_clk_frequency_khz(info);
70 EXPORT_SYMBOL(get_clk_frequency_khz);
73 * Intel PXA2xx internal register mapping.
75 * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
76 * and cache flush area.
78 static struct map_desc common_io_desc[] __initdata = {
80 .virtual = (unsigned long)PERIPH_VIRT,
81 .pfn = __phys_to_pfn(PERIPH_PHYS),
82 .length = PERIPH_SIZE,
87 void __init pxa_map_io(void)
90 iotable_init(ARRAY_AND_SIZE(common_io_desc));