1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/*
* (Hisilicon's Hi36xx/Hi37xx SoC based) flattened device tree enabled machine
*
* Copyright (c) 2012-2013 Linaro Ltd.
*
* Haojian Zhuang <haojian.zhuang@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/irqchip.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <asm/hardware/arm_timer.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/hardware/timer-sp.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
static struct of_device_id hs_timer_match[] __initdata = {
{ .compatible = "arm,sp804", },
{}
};
static struct clk_lookup sp804_lookup = {
.dev_id = "sp804",
.clk = NULL,
};
static struct of_device_id hs_l2cache_match[] __initdata = {
{ .compatible = "arm,pl310-cache", },
{}
};
extern void __init hs_init_clocks(void);
static void __init hs_timer_init(void)
{
struct device_node *node = NULL;
void __iomem *base;
int irq;
int ret;
u32 data[2];
of_clk_init(NULL);
node = of_find_matching_node(NULL, hs_timer_match);
WARN_ON(!node);
if (!node) {
pr_err("Failed to find sp804 timer\n");
return;
}
base = of_iomap(node, 0);
WARN_ON(!base);
/* timer0 is used as clock event, and timer1 is clock source. */
irq = irq_of_parse_and_map(node, 0);
WARN_ON(!irq);
sp804_lookup.clk = of_clk_get(node, 0);
clkdev_add(&sp804_lookup);
__sp804_clocksource_and_sched_clock_init(base + TIMER_2_BASE, "timer1",
sp804_lookup.clk, 1);
__sp804_clockevents_init(base, irq, sp804_lookup.clk, "timer0");
node = of_find_matching_node(NULL, hs_l2cache_match);
WARN_ON(!node);
if (!node) {
pr_err("Failed to find l2cache\n");
return;
}
ret = of_property_read_u32_array(node, "hisilicon,l2cache-aux",
&data[0], 2);
if (ret < 0) {
data[0] = 0;
data[1] = ~0UL;
}
l2x0_of_init(data[0], data[1]);
}
static void __init hs_init(void)
{
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char *hs_compat[] __initdata = {
"hisilicon,hi3620-hi4511",
NULL,
};
DT_MACHINE_START(HS_DT, "Hisilicon Hi36xx/Hi37xx (Flattened Device Tree)")
/* Maintainer: Haojian Zhuang <haojian.zhuang@linaro.org> */
.map_io = debug_ll_io_init,
.init_irq = irqchip_init,
.init_time = hs_timer_init,
.init_machine = hs_init,
.dt_compat = hs_compat,
MACHINE_END
|
