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93421e42 SH |
1 | /* |
2 | * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. | |
3 | * Copyright 2008 Juergen Beisert, kernel@pengutronix.de | |
4 | * Copyright 2008 Martin Fuzzey, mfuzzey@gmail.com | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
93421e42 SH |
10 | */ |
11 | ||
12 | #include <linux/clk.h> | |
93421e42 | 13 | #include <linux/clk-provider.h> |
548694b9 | 14 | #include <linux/clkdev.h> |
93421e42 | 15 | |
93421e42 | 16 | #include "clk.h" |
e3372474 | 17 | #include "common.h" |
50f2de61 | 18 | #include "hardware.h" |
93421e42 SH |
19 | |
20 | #define IO_ADDR_CCM(off) (MX21_IO_ADDRESS(MX21_CCM_BASE_ADDR + (off))) | |
21 | ||
22 | /* Register offsets */ | |
23 | #define CCM_CSCR IO_ADDR_CCM(0x0) | |
24 | #define CCM_MPCTL0 IO_ADDR_CCM(0x4) | |
93421e42 | 25 | #define CCM_SPCTL0 IO_ADDR_CCM(0xc) |
93421e42 SH |
26 | #define CCM_PCDR0 IO_ADDR_CCM(0x18) |
27 | #define CCM_PCDR1 IO_ADDR_CCM(0x1c) | |
28 | #define CCM_PCCR0 IO_ADDR_CCM(0x20) | |
29 | #define CCM_PCCR1 IO_ADDR_CCM(0x24) | |
93421e42 | 30 | |
65251690 AS |
31 | static const char *mpll_osc_sel_clks[] = { "ckih_gate", "ckih_div1p5", }; |
32 | static const char *mpll_sel_clks[] = { "fpm_gate", "mpll_osc_sel", }; | |
33 | static const char *spll_sel_clks[] = { "fpm_gate", "mpll_osc_sel", }; | |
34 | static const char *ssi_sel_clks[] = { "spll_gate", "mpll_gate", }; | |
93421e42 SH |
35 | |
36 | enum imx21_clks { | |
65251690 AS |
37 | dummy, ckil, ckih, fpm, ckih_div1p5, mpll_gate, spll_gate, fpm_gate, |
38 | ckih_gate, mpll_osc_sel, ipg, hclk, mpll_sel, spll_sel, ssi1_sel, | |
39 | ssi2_sel, usb_div, fclk, mpll, spll, nfc_div, ssi1_div, ssi2_div, per1, | |
93421e42 | 40 | per2, per3, per4, uart1_ipg_gate, uart2_ipg_gate, uart3_ipg_gate, |
65251690 AS |
41 | uart4_ipg_gate, cspi1_ipg_gate, cspi2_ipg_gate, ssi1_gate, ssi2_gate, |
42 | sdhc1_ipg_gate, sdhc2_ipg_gate, gpio_gate, i2c_gate, dma_gate, usb_gate, | |
43 | emma_gate, ssi2_baud_gate, ssi1_baud_gate, lcdc_ipg_gate, nfc_gate, | |
44 | lcdc_hclk_gate, per4_gate, bmi_gate, usb_hclk_gate, slcdc_gate, | |
45 | slcdc_hclk_gate, emma_hclk_gate, brom_gate, dma_hclk_gate, | |
46 | csi_hclk_gate, cspi3_ipg_gate, wdog_gate, gpt1_ipg_gate, gpt2_ipg_gate, | |
47 | gpt3_ipg_gate, pwm_ipg_gate, rtc_gate, kpp_gate, owire_gate, clk_max | |
93421e42 SH |
48 | }; |
49 | ||
50 | static struct clk *clk[clk_max]; | |
51 | ||
93421e42 SH |
52 | int __init mx21_clocks_init(unsigned long lref, unsigned long href) |
53 | { | |
65251690 | 54 | clk[dummy] = imx_clk_fixed("dummy", 0); |
93421e42 SH |
55 | clk[ckil] = imx_clk_fixed("ckil", lref); |
56 | clk[ckih] = imx_clk_fixed("ckih", href); | |
57 | clk[fpm] = imx_clk_fixed_factor("fpm", "ckil", 512, 1); | |
65251690 AS |
58 | clk[ckih_div1p5] = imx_clk_fixed_factor("ckih_div1p5", "ckih_gate", 2, 3); |
59 | ||
60 | clk[mpll_gate] = imx_clk_gate("mpll_gate", "mpll", CCM_CSCR, 0); | |
61 | clk[spll_gate] = imx_clk_gate("spll_gate", "spll", CCM_CSCR, 1); | |
62 | clk[fpm_gate] = imx_clk_gate("fpm_gate", "fpm", CCM_CSCR, 2); | |
63 | clk[ckih_gate] = imx_clk_gate_dis("ckih_gate", "ckih", CCM_CSCR, 3); | |
64 | clk[mpll_osc_sel] = imx_clk_mux("mpll_osc_sel", CCM_CSCR, 4, 1, mpll_osc_sel_clks, ARRAY_SIZE(mpll_osc_sel_clks)); | |
65 | clk[ipg] = imx_clk_divider("ipg", "hclk", CCM_CSCR, 9, 1); | |
66 | clk[hclk] = imx_clk_divider("hclk", "fclk", CCM_CSCR, 10, 4); | |
67 | clk[mpll_sel] = imx_clk_mux("mpll_sel", CCM_CSCR, 16, 1, mpll_sel_clks, ARRAY_SIZE(mpll_sel_clks)); | |
68 | clk[spll_sel] = imx_clk_mux("spll_sel", CCM_CSCR, 17, 1, spll_sel_clks, ARRAY_SIZE(spll_sel_clks)); | |
69 | clk[ssi1_sel] = imx_clk_mux("ssi1_sel", CCM_CSCR, 19, 1, ssi_sel_clks, ARRAY_SIZE(ssi_sel_clks)); | |
70 | clk[ssi2_sel] = imx_clk_mux("ssi2_sel", CCM_CSCR, 20, 1, ssi_sel_clks, ARRAY_SIZE(ssi_sel_clks)); | |
71 | clk[usb_div] = imx_clk_divider("usb_div", "spll_gate", CCM_CSCR, 26, 3); | |
72 | clk[fclk] = imx_clk_divider("fclk", "mpll_gate", CCM_CSCR, 29, 3); | |
73 | ||
93421e42 | 74 | clk[mpll] = imx_clk_pllv1("mpll", "mpll_sel", CCM_MPCTL0); |
65251690 | 75 | |
93421e42 | 76 | clk[spll] = imx_clk_pllv1("spll", "spll_sel", CCM_SPCTL0); |
65251690 AS |
77 | |
78 | clk[nfc_div] = imx_clk_divider("nfc_div", "fclk", CCM_PCDR0, 12, 4); | |
79 | clk[ssi1_div] = imx_clk_divider("ssi1_div", "ssi1_sel", CCM_PCDR0, 16, 6); | |
80 | clk[ssi2_div] = imx_clk_divider("ssi2_div", "ssi2_sel", CCM_PCDR0, 26, 6); | |
81 | ||
82 | clk[per1] = imx_clk_divider("per1", "mpll_gate", CCM_PCDR1, 0, 6); | |
83 | clk[per2] = imx_clk_divider("per2", "mpll_gate", CCM_PCDR1, 8, 6); | |
84 | clk[per3] = imx_clk_divider("per3", "mpll_gate", CCM_PCDR1, 16, 6); | |
85 | clk[per4] = imx_clk_divider("per4", "mpll_gate", CCM_PCDR1, 24, 6); | |
86 | ||
93421e42 SH |
87 | clk[uart1_ipg_gate] = imx_clk_gate("uart1_ipg_gate", "ipg", CCM_PCCR0, 0); |
88 | clk[uart2_ipg_gate] = imx_clk_gate("uart2_ipg_gate", "ipg", CCM_PCCR0, 1); | |
89 | clk[uart3_ipg_gate] = imx_clk_gate("uart3_ipg_gate", "ipg", CCM_PCCR0, 2); | |
90 | clk[uart4_ipg_gate] = imx_clk_gate("uart4_ipg_gate", "ipg", CCM_PCCR0, 3); | |
93421e42 | 91 | clk[cspi1_ipg_gate] = imx_clk_gate("cspi1_ipg_gate", "ipg", CCM_PCCR0, 4); |
65251690 | 92 | clk[cspi2_ipg_gate] = imx_clk_gate("cspi2_ipg_gate", "ipg", CCM_PCCR0, 5); |
93421e42 SH |
93 | clk[ssi1_gate] = imx_clk_gate("ssi1_gate", "ipg", CCM_PCCR0, 6); |
94 | clk[ssi2_gate] = imx_clk_gate("ssi2_gate", "ipg", CCM_PCCR0, 7); | |
65251690 AS |
95 | clk[sdhc1_ipg_gate] = imx_clk_gate("sdhc1_ipg_gate", "ipg", CCM_PCCR0, 9); |
96 | clk[sdhc2_ipg_gate] = imx_clk_gate("sdhc2_ipg_gate", "ipg", CCM_PCCR0, 10); | |
97 | clk[gpio_gate] = imx_clk_gate("gpio_gate", "ipg", CCM_PCCR0, 11); | |
98 | clk[i2c_gate] = imx_clk_gate("i2c_gate", "ipg", CCM_PCCR0, 12); | |
93421e42 | 99 | clk[dma_gate] = imx_clk_gate("dma_gate", "ipg", CCM_PCCR0, 13); |
65251690 | 100 | clk[usb_gate] = imx_clk_gate("usb_gate", "usb_div", CCM_PCCR0, 14); |
93421e42 | 101 | clk[emma_gate] = imx_clk_gate("emma_gate", "ipg", CCM_PCCR0, 15); |
65251690 AS |
102 | clk[ssi2_baud_gate] = imx_clk_gate("ssi2_baud_gate", "ipg", CCM_PCCR0, 16); |
103 | clk[ssi1_baud_gate] = imx_clk_gate("ssi1_baud_gate", "ipg", CCM_PCCR0, 17); | |
104 | clk[lcdc_ipg_gate] = imx_clk_gate("lcdc_ipg_gate", "ipg", CCM_PCCR0, 18); | |
105 | clk[nfc_gate] = imx_clk_gate("nfc_gate", "nfc_div", CCM_PCCR0, 19); | |
93421e42 | 106 | clk[slcdc_hclk_gate] = imx_clk_gate("slcdc_hclk_gate", "hclk", CCM_PCCR0, 21); |
65251690 AS |
107 | clk[per4_gate] = imx_clk_gate("per4_gate", "per4", CCM_PCCR0, 22); |
108 | clk[bmi_gate] = imx_clk_gate("bmi_gate", "hclk", CCM_PCCR0, 23); | |
109 | clk[usb_hclk_gate] = imx_clk_gate("usb_hclk_gate", "hclk", CCM_PCCR0, 24); | |
110 | clk[slcdc_gate] = imx_clk_gate("slcdc_gate", "hclk", CCM_PCCR0, 25); | |
111 | clk[lcdc_hclk_gate] = imx_clk_gate("lcdc_hclk_gate", "hclk", CCM_PCCR0, 26); | |
112 | clk[emma_hclk_gate] = imx_clk_gate("emma_hclk_gate", "hclk", CCM_PCCR0, 27); | |
113 | clk[brom_gate] = imx_clk_gate("brom_gate", "hclk", CCM_PCCR0, 28); | |
114 | clk[dma_hclk_gate] = imx_clk_gate("dma_hclk_gate", "hclk", CCM_PCCR0, 30); | |
115 | clk[csi_hclk_gate] = imx_clk_gate("csi_hclk_gate", "hclk", CCM_PCCR0, 31); | |
116 | ||
117 | clk[cspi3_ipg_gate] = imx_clk_gate("cspi3_ipg_gate", "ipg", CCM_PCCR1, 23); | |
93421e42 | 118 | clk[wdog_gate] = imx_clk_gate("wdog_gate", "ipg", CCM_PCCR1, 24); |
65251690 AS |
119 | clk[gpt1_ipg_gate] = imx_clk_gate("gpt1_ipg_gate", "ipg", CCM_PCCR1, 25); |
120 | clk[gpt2_ipg_gate] = imx_clk_gate("gpt2_ipg_gate", "ipg", CCM_PCCR1, 26); | |
121 | clk[gpt3_ipg_gate] = imx_clk_gate("gpt3_ipg_gate", "ipg", CCM_PCCR1, 27); | |
122 | clk[pwm_ipg_gate] = imx_clk_gate("pwm_ipg_gate", "ipg", CCM_PCCR1, 28); | |
123 | clk[rtc_gate] = imx_clk_gate("rtc_gate", "ipg", CCM_PCCR1, 29); | |
93421e42 SH |
124 | clk[kpp_gate] = imx_clk_gate("kpp_gate", "ipg", CCM_PCCR1, 30); |
125 | clk[owire_gate] = imx_clk_gate("owire_gate", "ipg", CCM_PCCR1, 31); | |
93421e42 | 126 | |
229be9c1 | 127 | imx_check_clocks(clk, ARRAY_SIZE(clk)); |
93421e42 | 128 | |
93421e42 SH |
129 | clk_register_clkdev(clk[per1], "per", "imx21-uart.0"); |
130 | clk_register_clkdev(clk[uart1_ipg_gate], "ipg", "imx21-uart.0"); | |
131 | clk_register_clkdev(clk[per1], "per", "imx21-uart.1"); | |
132 | clk_register_clkdev(clk[uart2_ipg_gate], "ipg", "imx21-uart.1"); | |
133 | clk_register_clkdev(clk[per1], "per", "imx21-uart.2"); | |
134 | clk_register_clkdev(clk[uart3_ipg_gate], "ipg", "imx21-uart.2"); | |
135 | clk_register_clkdev(clk[per1], "per", "imx21-uart.3"); | |
136 | clk_register_clkdev(clk[uart4_ipg_gate], "ipg", "imx21-uart.3"); | |
137 | clk_register_clkdev(clk[gpt1_ipg_gate], "ipg", "imx-gpt.0"); | |
138 | clk_register_clkdev(clk[per1], "per", "imx-gpt.0"); | |
93421e42 SH |
139 | clk_register_clkdev(clk[per2], "per", "imx21-cspi.0"); |
140 | clk_register_clkdev(clk[cspi1_ipg_gate], "ipg", "imx21-cspi.0"); | |
141 | clk_register_clkdev(clk[per2], "per", "imx21-cspi.1"); | |
142 | clk_register_clkdev(clk[cspi2_ipg_gate], "ipg", "imx21-cspi.1"); | |
143 | clk_register_clkdev(clk[per2], "per", "imx21-cspi.2"); | |
144 | clk_register_clkdev(clk[cspi3_ipg_gate], "ipg", "imx21-cspi.2"); | |
e69dc9a9 SG |
145 | clk_register_clkdev(clk[per3], "per", "imx21-fb.0"); |
146 | clk_register_clkdev(clk[lcdc_ipg_gate], "ipg", "imx21-fb.0"); | |
147 | clk_register_clkdev(clk[lcdc_hclk_gate], "ahb", "imx21-fb.0"); | |
93421e42 SH |
148 | clk_register_clkdev(clk[usb_gate], "per", "imx21-hcd.0"); |
149 | clk_register_clkdev(clk[usb_hclk_gate], "ahb", "imx21-hcd.0"); | |
4d62435f | 150 | clk_register_clkdev(clk[nfc_gate], NULL, "imx21-nand.0"); |
e51d0f0a SG |
151 | clk_register_clkdev(clk[dma_hclk_gate], "ahb", "imx21-dma"); |
152 | clk_register_clkdev(clk[dma_gate], "ipg", "imx21-dma"); | |
93421e42 | 153 | clk_register_clkdev(clk[wdog_gate], NULL, "imx2-wdt.0"); |
5bdfba29 | 154 | clk_register_clkdev(clk[i2c_gate], NULL, "imx21-i2c.0"); |
93421e42 | 155 | clk_register_clkdev(clk[owire_gate], NULL, "mxc_w1.0"); |
93421e42 | 156 | |
2cfb4518 SH |
157 | mxc_timer_init(MX21_IO_ADDRESS(MX21_GPT1_BASE_ADDR), MX21_INT_GPT1); |
158 | ||
93421e42 SH |
159 | return 0; |
160 | } |