GNU Linux-libre 4.4.289-gnu1
[releases.git] / drivers / clk / clk-efm32gg.c
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  */
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
24 static void __init efm32gg_cmu_init(struct device_node *np)
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");
35                 return;
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
78         of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
79 }
80 CLK_OF_DECLARE(efm32ggcmu, "efm32gg,cmu", efm32gg_cmu_init);