This source file includes following definitions.
- spear13xx_l2x0_init
- spear13xx_map_io
- spear13xx_clk_init
- spear13xx_timer_init
1
2
3
4
5
6
7
8
9
10
11
12
13
14 #define pr_fmt(fmt) "SPEAr13xx: " fmt
15
16 #include <linux/amba/pl022.h>
17 #include <linux/clk.h>
18 #include <linux/clocksource.h>
19 #include <linux/err.h>
20 #include <linux/of.h>
21 #include <asm/hardware/cache-l2x0.h>
22 #include <asm/mach/map.h>
23 #include <mach/spear.h>
24 #include "generic.h"
25
26 void __init spear13xx_l2x0_init(void)
27 {
28
29
30
31
32
33
34
35
36
37
38 if (!IS_ENABLED(CONFIG_CACHE_L2X0))
39 return;
40
41 writel_relaxed(0x06, VA_L2CC_BASE + L310_PREFETCH_CTRL);
42
43
44
45
46
47 writel_relaxed(0x221, VA_L2CC_BASE + L310_TAG_LATENCY_CTRL);
48 writel_relaxed(0x441, VA_L2CC_BASE + L310_DATA_LATENCY_CTRL);
49 l2x0_init(VA_L2CC_BASE, 0x30a00001, 0xfe0fffff);
50 }
51
52
53
54
55
56
57
58
59
60 static struct map_desc spear13xx_io_desc[] __initdata = {
61 {
62 .virtual = (unsigned long)VA_PERIP_GRP2_BASE,
63 .pfn = __phys_to_pfn(PERIP_GRP2_BASE),
64 .length = SZ_16M,
65 .type = MT_DEVICE
66 }, {
67 .virtual = (unsigned long)VA_PERIP_GRP1_BASE,
68 .pfn = __phys_to_pfn(PERIP_GRP1_BASE),
69 .length = SZ_16M,
70 .type = MT_DEVICE
71 }, {
72 .virtual = (unsigned long)VA_A9SM_AND_MPMC_BASE,
73 .pfn = __phys_to_pfn(A9SM_AND_MPMC_BASE),
74 .length = SZ_16M,
75 .type = MT_DEVICE
76 }, {
77 .virtual = (unsigned long)VA_L2CC_BASE,
78 .pfn = __phys_to_pfn(L2CC_BASE),
79 .length = SZ_4K,
80 .type = MT_DEVICE
81 },
82 };
83
84
85 void __init spear13xx_map_io(void)
86 {
87 iotable_init(spear13xx_io_desc, ARRAY_SIZE(spear13xx_io_desc));
88 }
89
90 static void __init spear13xx_clk_init(void)
91 {
92 if (of_machine_is_compatible("st,spear1310"))
93 spear1310_clk_init(VA_MISC_BASE, VA_SPEAR1310_RAS_BASE);
94 else if (of_machine_is_compatible("st,spear1340"))
95 spear1340_clk_init(VA_MISC_BASE);
96 else
97 pr_err("%s: Unknown machine\n", __func__);
98 }
99
100 void __init spear13xx_timer_init(void)
101 {
102 char pclk_name[] = "osc_24m_clk";
103 struct clk *gpt_clk, *pclk;
104
105 spear13xx_clk_init();
106
107
108 gpt_clk = clk_get_sys("gpt0", NULL);
109 if (IS_ERR(gpt_clk)) {
110 pr_err("%s:couldn't get clk for gpt\n", __func__);
111 BUG();
112 }
113
114
115 pclk = clk_get(NULL, pclk_name);
116 if (IS_ERR(pclk)) {
117 pr_err("%s:couldn't get %s as parent for gpt\n", __func__,
118 pclk_name);
119 BUG();
120 }
121
122 clk_set_parent(gpt_clk, pclk);
123 clk_put(gpt_clk);
124 clk_put(pclk);
125
126 spear_setup_of_timer();
127 timer_probe();
128 }