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9ed9c07d UKK |
1 | /* |
2 | * Copyright (C) 2013 Pengutronix | |
3 | * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it under | |
6 | * the terms of the GNU General Public License version 2 as published by the | |
7 | * Free Software Foundation. | |
8 | */ | |
9ed9c07d UKK |
9 | #include <linux/io.h> |
10 | #include <linux/clk-provider.h> | |
11 | #include <linux/of.h> | |
12 | #include <linux/of_address.h> | |
13 | ||
14 | #include <dt-bindings/clock/efm32-cmu.h> | |
15 | ||
16 | #define CMU_HFPERCLKEN0 0x44 | |
17 | ||
18 | static struct clk *clk[37]; | |
19 | static struct clk_onecell_data clk_data = { | |
20 | .clks = clk, | |
21 | .clk_num = ARRAY_SIZE(clk), | |
22 | }; | |
23 | ||
8ce8ebeb | 24 | static void __init efm32gg_cmu_init(struct device_node *np) |
9ed9c07d UKK |
25 | { |
26 | int i; | |
27 | void __iomem *base; | |
28 | ||
29 | for (i = 0; i < ARRAY_SIZE(clk); ++i) | |
30 | clk[i] = ERR_PTR(-ENOENT); | |
31 | ||
32 | base = of_iomap(np, 0); | |
33 | if (!base) { | |
34 | pr_warn("Failed to map address range for efm32gg,cmu node\n"); | |
8ce8ebeb | 35 | return; |
9ed9c07d UKK |
36 | } |
37 | ||
38 | clk[clk_HFXO] = clk_register_fixed_rate(NULL, "HFXO", NULL, | |
39 | CLK_IS_ROOT, 48000000); | |
40 | ||
41 | clk[clk_HFPERCLKUSART0] = clk_register_gate(NULL, "HFPERCLK.USART0", | |
42 | "HFXO", 0, base + CMU_HFPERCLKEN0, 0, 0, NULL); | |
43 | clk[clk_HFPERCLKUSART1] = clk_register_gate(NULL, "HFPERCLK.USART1", | |
44 | "HFXO", 0, base + CMU_HFPERCLKEN0, 1, 0, NULL); | |
45 | clk[clk_HFPERCLKUSART2] = clk_register_gate(NULL, "HFPERCLK.USART2", | |
46 | "HFXO", 0, base + CMU_HFPERCLKEN0, 2, 0, NULL); | |
47 | clk[clk_HFPERCLKUART0] = clk_register_gate(NULL, "HFPERCLK.UART0", | |
48 | "HFXO", 0, base + CMU_HFPERCLKEN0, 3, 0, NULL); | |
49 | clk[clk_HFPERCLKUART1] = clk_register_gate(NULL, "HFPERCLK.UART1", | |
50 | "HFXO", 0, base + CMU_HFPERCLKEN0, 4, 0, NULL); | |
51 | clk[clk_HFPERCLKTIMER0] = clk_register_gate(NULL, "HFPERCLK.TIMER0", | |
52 | "HFXO", 0, base + CMU_HFPERCLKEN0, 5, 0, NULL); | |
53 | clk[clk_HFPERCLKTIMER1] = clk_register_gate(NULL, "HFPERCLK.TIMER1", | |
54 | "HFXO", 0, base + CMU_HFPERCLKEN0, 6, 0, NULL); | |
55 | clk[clk_HFPERCLKTIMER2] = clk_register_gate(NULL, "HFPERCLK.TIMER2", | |
56 | "HFXO", 0, base + CMU_HFPERCLKEN0, 7, 0, NULL); | |
57 | clk[clk_HFPERCLKTIMER3] = clk_register_gate(NULL, "HFPERCLK.TIMER3", | |
58 | "HFXO", 0, base + CMU_HFPERCLKEN0, 8, 0, NULL); | |
59 | clk[clk_HFPERCLKACMP0] = clk_register_gate(NULL, "HFPERCLK.ACMP0", | |
60 | "HFXO", 0, base + CMU_HFPERCLKEN0, 9, 0, NULL); | |
61 | clk[clk_HFPERCLKACMP1] = clk_register_gate(NULL, "HFPERCLK.ACMP1", | |
62 | "HFXO", 0, base + CMU_HFPERCLKEN0, 10, 0, NULL); | |
63 | clk[clk_HFPERCLKI2C0] = clk_register_gate(NULL, "HFPERCLK.I2C0", | |
64 | "HFXO", 0, base + CMU_HFPERCLKEN0, 11, 0, NULL); | |
65 | clk[clk_HFPERCLKI2C1] = clk_register_gate(NULL, "HFPERCLK.I2C1", | |
66 | "HFXO", 0, base + CMU_HFPERCLKEN0, 12, 0, NULL); | |
67 | clk[clk_HFPERCLKGPIO] = clk_register_gate(NULL, "HFPERCLK.GPIO", | |
68 | "HFXO", 0, base + CMU_HFPERCLKEN0, 13, 0, NULL); | |
69 | clk[clk_HFPERCLKVCMP] = clk_register_gate(NULL, "HFPERCLK.VCMP", | |
70 | "HFXO", 0, base + CMU_HFPERCLKEN0, 14, 0, NULL); | |
71 | clk[clk_HFPERCLKPRS] = clk_register_gate(NULL, "HFPERCLK.PRS", | |
72 | "HFXO", 0, base + CMU_HFPERCLKEN0, 15, 0, NULL); | |
73 | clk[clk_HFPERCLKADC0] = clk_register_gate(NULL, "HFPERCLK.ADC0", | |
74 | "HFXO", 0, base + CMU_HFPERCLKEN0, 16, 0, NULL); | |
75 | clk[clk_HFPERCLKDAC0] = clk_register_gate(NULL, "HFPERCLK.DAC0", | |
76 | "HFXO", 0, base + CMU_HFPERCLKEN0, 17, 0, NULL); | |
77 | ||
8ce8ebeb | 78 | of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); |
9ed9c07d UKK |
79 | } |
80 | CLK_OF_DECLARE(efm32ggcmu, "efm32gg,cmu", efm32gg_cmu_init); |