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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
253b0887 PM |
2 | #include <linux/clk.h> |
3 | #include <linux/compiler.h> | |
4c7eb4eb | 4 | #include <linux/slab.h> |
6881e8bf | 5 | #include <linux/io.h> |
6d803ba7 | 6 | #include <linux/clkdev.h> |
253b0887 PM |
7 | #include <asm/clock.h> |
8 | ||
9 | static struct clk master_clk = { | |
253b0887 PM |
10 | .flags = CLK_ENABLE_ON_INIT, |
11 | .rate = CONFIG_SH_PCLK_FREQ, | |
12 | }; | |
13 | ||
14 | static struct clk peripheral_clk = { | |
253b0887 PM |
15 | .parent = &master_clk, |
16 | .flags = CLK_ENABLE_ON_INIT, | |
17 | }; | |
18 | ||
19 | static struct clk bus_clk = { | |
253b0887 PM |
20 | .parent = &master_clk, |
21 | .flags = CLK_ENABLE_ON_INIT, | |
22 | }; | |
23 | ||
24 | static struct clk cpu_clk = { | |
253b0887 PM |
25 | .parent = &master_clk, |
26 | .flags = CLK_ENABLE_ON_INIT, | |
27 | }; | |
28 | ||
29 | /* | |
30 | * The ordering of these clocks matters, do not change it. | |
31 | */ | |
32 | static struct clk *onchip_clocks[] = { | |
33 | &master_clk, | |
34 | &peripheral_clk, | |
35 | &bus_clk, | |
36 | &cpu_clk, | |
37 | }; | |
38 | ||
53041f02 MD |
39 | static struct clk_lookup lookups[] = { |
40 | /* main clocks */ | |
41 | CLKDEV_CON_ID("master_clk", &master_clk), | |
42 | CLKDEV_CON_ID("peripheral_clk", &peripheral_clk), | |
43 | CLKDEV_CON_ID("bus_clk", &bus_clk), | |
44 | CLKDEV_CON_ID("cpu_clk", &cpu_clk), | |
45 | }; | |
46 | ||
253b0887 PM |
47 | int __init __deprecated cpg_clk_init(void) |
48 | { | |
49 | int i, ret = 0; | |
50 | ||
51 | for (i = 0; i < ARRAY_SIZE(onchip_clocks); i++) { | |
52 | struct clk *clk = onchip_clocks[i]; | |
53 | arch_init_clk_ops(&clk->ops, i); | |
54 | if (clk->ops) | |
55 | ret |= clk_register(clk); | |
56 | } | |
57 | ||
53041f02 MD |
58 | clkdev_add_table(lookups, ARRAY_SIZE(lookups)); |
59 | ||
1399c195 LP |
60 | clk_add_alias("fck", "sh-tmu-sh3.0", "peripheral_clk", NULL); |
61 | clk_add_alias("fck", "sh-tmu.0", "peripheral_clk", NULL); | |
62 | clk_add_alias("fck", "sh-tmu.1", "peripheral_clk", NULL); | |
63 | clk_add_alias("fck", "sh-tmu.2", "peripheral_clk", NULL); | |
5204601c | 64 | clk_add_alias("fck", "sh-mtu2", "peripheral_clk", NULL); |
9b17e48c LP |
65 | clk_add_alias("fck", "sh-cmt-16.0", "peripheral_clk", NULL); |
66 | clk_add_alias("fck", "sh-cmt-32.0", "peripheral_clk", NULL); | |
0776d602 | 67 | |
253b0887 PM |
68 | return ret; |
69 | } | |
70 | ||
71 | /* | |
25985edc | 72 | * Placeholder for compatibility, until the lazy CPUs do this |
253b0887 PM |
73 | * on their own. |
74 | */ | |
75 | int __init __weak arch_clk_init(void) | |
76 | { | |
77 | return cpg_clk_init(); | |
78 | } |