1 #include <linux/clk.h>
2 #include <linux/compiler.h>
3 #include <linux/slab.h>
4 #include <linux/io.h>
5 #include <linux/clkdev.h>
6 #include <asm/clock.h>
7
8 static struct clk master_clk = {
9 .flags = CLK_ENABLE_ON_INIT,
10 .rate = CONFIG_SH_PCLK_FREQ,
11 };
12
13 static struct clk peripheral_clk = {
14 .parent = &master_clk,
15 .flags = CLK_ENABLE_ON_INIT,
16 };
17
18 static struct clk bus_clk = {
19 .parent = &master_clk,
20 .flags = CLK_ENABLE_ON_INIT,
21 };
22
23 static struct clk cpu_clk = {
24 .parent = &master_clk,
25 .flags = CLK_ENABLE_ON_INIT,
26 };
27
28 /*
29 * The ordering of these clocks matters, do not change it.
30 */
31 static struct clk *onchip_clocks[] = {
32 &master_clk,
33 &peripheral_clk,
34 &bus_clk,
35 &cpu_clk,
36 };
37
38 #define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }
39
40 static struct clk_lookup lookups[] = {
41 /* main clocks */
42 CLKDEV_CON_ID("master_clk", &master_clk),
43 CLKDEV_CON_ID("peripheral_clk", &peripheral_clk),
44 CLKDEV_CON_ID("bus_clk", &bus_clk),
45 CLKDEV_CON_ID("cpu_clk", &cpu_clk),
46 };
47
cpg_clk_init(void)48 int __init __deprecated cpg_clk_init(void)
49 {
50 int i, ret = 0;
51
52 for (i = 0; i < ARRAY_SIZE(onchip_clocks); i++) {
53 struct clk *clk = onchip_clocks[i];
54 arch_init_clk_ops(&clk->ops, i);
55 if (clk->ops)
56 ret |= clk_register(clk);
57 }
58
59 clkdev_add_table(lookups, ARRAY_SIZE(lookups));
60
61 clk_add_alias("tmu_fck", NULL, "peripheral_clk", NULL);
62 clk_add_alias("mtu2_fck", NULL, "peripheral_clk", NULL);
63 clk_add_alias("cmt_fck", NULL, "peripheral_clk", NULL);
64 clk_add_alias("sci_ick", NULL, "peripheral_clk", NULL);
65
66 return ret;
67 }
68
69 /*
70 * Placeholder for compatibility, until the lazy CPUs do this
71 * on their own.
72 */
arch_clk_init(void)73 int __init __weak arch_clk_init(void)
74 {
75 return cpg_clk_init();
76 }
77