1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Joshua Henderson <joshua.henderson@microchip.com>
 4 * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
 5 */
 6#include <linux/clocksource.h>
 7#include <linux/init.h>
 8#include <linux/irqdomain.h>
 9#include <linux/of.h>
10#include <linux/of_clk.h>
11#include <linux/of_irq.h>
12
13#include <asm/time.h>
14
15#include "pic32mzda.h"
16
17static const struct of_device_id pic32_infra_match[] = {
18	{ .compatible = "microchip,pic32mzda-infra", },
19	{ },
20};
21
22#define DEFAULT_CORE_TIMER_INTERRUPT 0
23
24static unsigned int pic32_xlate_core_timer_irq(void)
25{
26	struct device_node *node;
27	unsigned int irq;
28
29	node = of_find_matching_node(NULL, pic32_infra_match);
30
31	if (WARN_ON(!node))
32		goto default_map;
33
34	irq = irq_of_parse_and_map(node, 0);
35
36	of_node_put(node);
37
38	if (!irq)
39		goto default_map;
40
41	return irq;
42
43default_map:
44
45	return irq_create_mapping(NULL, DEFAULT_CORE_TIMER_INTERRUPT);
46}
47
48unsigned int get_c0_compare_int(void)
49{
50	return pic32_xlate_core_timer_irq();
51}
52
53void __init plat_time_init(void)
54{
55	unsigned long rate = pic32_get_pbclk(7);
56
57	of_clk_init(NULL);
58
59	pr_info("CPU Clock: %ldMHz\n", rate / 1000000);
60	mips_hpt_frequency = rate / 2;
61
62	timer_probe();
63}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Joshua Henderson <joshua.henderson@microchip.com>
 4 * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
 5 */
 6#include <linux/clocksource.h>
 7#include <linux/init.h>
 8#include <linux/irqdomain.h>
 9#include <linux/of.h>
10#include <linux/of_clk.h>
11#include <linux/of_irq.h>
12
13#include <asm/time.h>
14
15#include "pic32mzda.h"
16
17static const struct of_device_id pic32_infra_match[] = {
18	{ .compatible = "microchip,pic32mzda-infra", },
19	{ },
20};
21
22#define DEFAULT_CORE_TIMER_INTERRUPT 0
23
24static unsigned int pic32_xlate_core_timer_irq(void)
25{
26	struct device_node *node;
27	unsigned int irq;
28
29	node = of_find_matching_node(NULL, pic32_infra_match);
30
31	if (WARN_ON(!node))
32		goto default_map;
33
34	irq = irq_of_parse_and_map(node, 0);
35
36	of_node_put(node);
37
38	if (!irq)
39		goto default_map;
40
41	return irq;
42
43default_map:
44
45	return irq_create_mapping(NULL, DEFAULT_CORE_TIMER_INTERRUPT);
46}
47
48unsigned int get_c0_compare_int(void)
49{
50	return pic32_xlate_core_timer_irq();
51}
52
53void __init plat_time_init(void)
54{
55	unsigned long rate = pic32_get_pbclk(7);
56
57	of_clk_init(NULL);
58
59	pr_info("CPU Clock: %ldMHz\n", rate / 1000000);
60	mips_hpt_frequency = rate / 2;
61
62	timer_probe();
63}