blob: 86a0c4262471157d7951e4f05e6932169de6906b [file] [log] [blame]
Sascha Hauere038ed52012-03-09 09:11:46 +01001#include <linux/clk.h>
2#include <linux/io.h>
3#include <linux/module.h>
4#include <linux/clkdev.h>
5#include <linux/err.h>
6#include <linux/clk-provider.h>
7#include <linux/of.h>
8
Sascha Hauere038ed52012-03-09 09:11:46 +01009#include <mach/hardware.h>
Shawn Guoe3372472012-09-13 21:01:00 +080010
Sascha Hauere038ed52012-03-09 09:11:46 +010011#include "clk.h"
Shawn Guoe3372472012-09-13 21:01:00 +080012#include "common.h"
Sascha Hauere038ed52012-03-09 09:11:46 +010013
14#define IO_ADDR_CCM(off) (MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR + (off)))
15
16/* Register offsets */
17#define CCM_CSCR IO_ADDR_CCM(0x0)
18#define CCM_MPCTL0 IO_ADDR_CCM(0x4)
19#define CCM_MPCTL1 IO_ADDR_CCM(0x8)
20#define CCM_SPCTL0 IO_ADDR_CCM(0xc)
21#define CCM_SPCTL1 IO_ADDR_CCM(0x10)
22#define CCM_OSC26MCTL IO_ADDR_CCM(0x14)
23#define CCM_PCDR0 IO_ADDR_CCM(0x18)
24#define CCM_PCDR1 IO_ADDR_CCM(0x1c)
25#define CCM_PCCR0 IO_ADDR_CCM(0x20)
26#define CCM_PCCR1 IO_ADDR_CCM(0x24)
27#define CCM_CCSR IO_ADDR_CCM(0x28)
28#define CCM_PMCTL IO_ADDR_CCM(0x2c)
29#define CCM_PMCOUNT IO_ADDR_CCM(0x30)
30#define CCM_WKGDCTL IO_ADDR_CCM(0x34)
31
32#define CCM_CSCR_UPDATE_DIS (1 << 31)
33#define CCM_CSCR_SSI2 (1 << 23)
34#define CCM_CSCR_SSI1 (1 << 22)
35#define CCM_CSCR_VPU (1 << 21)
36#define CCM_CSCR_MSHC (1 << 20)
37#define CCM_CSCR_SPLLRES (1 << 19)
38#define CCM_CSCR_MPLLRES (1 << 18)
39#define CCM_CSCR_SP (1 << 17)
40#define CCM_CSCR_MCU (1 << 16)
41#define CCM_CSCR_OSC26MDIV (1 << 4)
42#define CCM_CSCR_OSC26M (1 << 3)
43#define CCM_CSCR_FPM (1 << 2)
44#define CCM_CSCR_SPEN (1 << 1)
45#define CCM_CSCR_MPEN (1 << 0)
46
47/* i.MX27 TO 2+ */
48#define CCM_CSCR_ARM_SRC (1 << 15)
49
50#define CCM_SPCTL1_LF (1 << 15)
51#define CCM_SPCTL1_BRMO (1 << 6)
52
53static const char *vpu_sel_clks[] = { "spll", "mpll_main2", };
54static const char *cpu_sel_clks[] = { "mpll_main2", "mpll", };
55static const char *clko_sel_clks[] = {
56 "ckil", "prem", "ckih", "ckih",
57 "ckih", "mpll", "spll", "cpu_div",
58 "ahb", "ipg", "per1_div", "per2_div",
59 "per3_div", "per4_div", "ssi1_div", "ssi2_div",
60 "nfc_div", "mshc_div", "vpu_div", "60m",
61 "32k", "usb_div", "dptc",
62};
63
64static const char *ssi_sel_clks[] = { "spll", "mpll", };
65
66enum mx27_clks {
67 dummy, ckih, ckil, mpll, spll, mpll_main2, ahb, ipg, nfc_div, per1_div,
68 per2_div, per3_div, per4_div, vpu_sel, vpu_div, usb_div, cpu_sel,
69 clko_sel, cpu_div, clko_div, ssi1_sel, ssi2_sel, ssi1_div, ssi2_div,
70 clko_en, ssi2_ipg_gate, ssi1_ipg_gate, slcdc_ipg_gate, sdhc3_ipg_gate,
71 sdhc2_ipg_gate, sdhc1_ipg_gate, scc_ipg_gate, sahara_ipg_gate,
72 rtc_ipg_gate, pwm_ipg_gate, owire_ipg_gate, lcdc_ipg_gate,
73 kpp_ipg_gate, iim_ipg_gate, i2c2_ipg_gate, i2c1_ipg_gate,
74 gpt6_ipg_gate, gpt5_ipg_gate, gpt4_ipg_gate, gpt3_ipg_gate,
75 gpt2_ipg_gate, gpt1_ipg_gate, gpio_ipg_gate, fec_ipg_gate,
76 emma_ipg_gate, dma_ipg_gate, cspi3_ipg_gate, cspi2_ipg_gate,
77 cspi1_ipg_gate, nfc_baud_gate, ssi2_baud_gate, ssi1_baud_gate,
78 vpu_baud_gate, per4_gate, per3_gate, per2_gate, per1_gate,
79 usb_ahb_gate, slcdc_ahb_gate, sahara_ahb_gate, lcdc_ahb_gate,
80 vpu_ahb_gate, fec_ahb_gate, emma_ahb_gate, emi_ahb_gate, dma_ahb_gate,
81 csi_ahb_gate, brom_ahb_gate, ata_ahb_gate, wdog_ipg_gate, usb_ipg_gate,
82 uart6_ipg_gate, uart5_ipg_gate, uart4_ipg_gate, uart3_ipg_gate,
83 uart2_ipg_gate, uart1_ipg_gate, clk_max
84};
85
86static struct clk *clk[clk_max];
87
88int __init mx27_clocks_init(unsigned long fref)
89{
90 int i;
91
92 clk[dummy] = imx_clk_fixed("dummy", 0);
93 clk[ckih] = imx_clk_fixed("ckih", fref);
94 clk[ckil] = imx_clk_fixed("ckil", 32768);
95 clk[mpll] = imx_clk_pllv1("mpll", "ckih", CCM_MPCTL0);
96 clk[spll] = imx_clk_pllv1("spll", "ckih", CCM_SPCTL0);
97 clk[mpll_main2] = imx_clk_fixed_factor("mpll_main2", "mpll", 2, 3);
98
99 if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
100 clk[ahb] = imx_clk_divider("ahb", "mpll_main2", CCM_CSCR, 8, 2);
101 clk[ipg] = imx_clk_fixed_factor("ipg", "ahb", 1, 2);
102 } else {
103 clk[ahb] = imx_clk_divider("ahb", "mpll_main2", CCM_CSCR, 9, 4);
104 clk[ipg] = imx_clk_divider("ipg", "ahb", CCM_CSCR, 8, 1);
105 }
106
107 clk[nfc_div] = imx_clk_divider("nfc_div", "ahb", CCM_PCDR0, 6, 4);
108 clk[per1_div] = imx_clk_divider("per1_div", "mpll_main2", CCM_PCDR1, 0, 6);
109 clk[per2_div] = imx_clk_divider("per2_div", "mpll_main2", CCM_PCDR1, 8, 6);
110 clk[per3_div] = imx_clk_divider("per3_div", "mpll_main2", CCM_PCDR1, 16, 6);
111 clk[per4_div] = imx_clk_divider("per4_div", "mpll_main2", CCM_PCDR1, 24, 6);
112 clk[vpu_sel] = imx_clk_mux("vpu_sel", CCM_CSCR, 21, 1, vpu_sel_clks, ARRAY_SIZE(vpu_sel_clks));
113 clk[vpu_div] = imx_clk_divider("vpu_div", "vpu_sel", CCM_PCDR0, 10, 3);
114 clk[usb_div] = imx_clk_divider("usb_div", "spll", CCM_CSCR, 28, 3);
115 clk[cpu_sel] = imx_clk_mux("cpu_sel", CCM_CSCR, 15, 1, cpu_sel_clks, ARRAY_SIZE(cpu_sel_clks));
116 clk[clko_sel] = imx_clk_mux("clko_sel", CCM_CCSR, 0, 5, clko_sel_clks, ARRAY_SIZE(clko_sel_clks));
117 if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
118 clk[cpu_div] = imx_clk_divider("cpu_div", "cpu_sel", CCM_CSCR, 12, 2);
119 else
120 clk[cpu_div] = imx_clk_divider("cpu_div", "cpu_sel", CCM_CSCR, 13, 3);
121 clk[clko_div] = imx_clk_divider("clko_div", "clko_sel", CCM_PCDR0, 22, 3);
122 clk[ssi1_sel] = imx_clk_mux("ssi1_sel", CCM_CSCR, 22, 1, ssi_sel_clks, ARRAY_SIZE(ssi_sel_clks));
123 clk[ssi2_sel] = imx_clk_mux("ssi2_sel", CCM_CSCR, 23, 1, ssi_sel_clks, ARRAY_SIZE(ssi_sel_clks));
124 clk[ssi1_div] = imx_clk_divider("ssi1_div", "ssi1_sel", CCM_PCDR0, 16, 6);
125 clk[ssi2_div] = imx_clk_divider("ssi2_div", "ssi2_sel", CCM_PCDR0, 26, 3);
126 clk[clko_en] = imx_clk_gate("clko_en", "clko_div", CCM_PCCR0, 0);
127 clk[ssi2_ipg_gate] = imx_clk_gate("ssi2_ipg_gate", "ipg", CCM_PCCR0, 0);
128 clk[ssi1_ipg_gate] = imx_clk_gate("ssi1_ipg_gate", "ipg", CCM_PCCR0, 1);
129 clk[slcdc_ipg_gate] = imx_clk_gate("slcdc_ipg_gate", "ipg", CCM_PCCR0, 2);
130 clk[sdhc3_ipg_gate] = imx_clk_gate("sdhc3_ipg_gate", "ipg", CCM_PCCR0, 3);
131 clk[sdhc2_ipg_gate] = imx_clk_gate("sdhc2_ipg_gate", "ipg", CCM_PCCR0, 4);
132 clk[sdhc1_ipg_gate] = imx_clk_gate("sdhc1_ipg_gate", "ipg", CCM_PCCR0, 5);
133 clk[scc_ipg_gate] = imx_clk_gate("scc_ipg_gate", "ipg", CCM_PCCR0, 6);
134 clk[sahara_ipg_gate] = imx_clk_gate("sahara_ipg_gate", "ipg", CCM_PCCR0, 7);
135 clk[rtc_ipg_gate] = imx_clk_gate("rtc_ipg_gate", "ipg", CCM_PCCR0, 9);
136 clk[pwm_ipg_gate] = imx_clk_gate("pwm_ipg_gate", "ipg", CCM_PCCR0, 11);
137 clk[owire_ipg_gate] = imx_clk_gate("owire_ipg_gate", "ipg", CCM_PCCR0, 12);
138 clk[lcdc_ipg_gate] = imx_clk_gate("lcdc_ipg_gate", "ipg", CCM_PCCR0, 14);
139 clk[kpp_ipg_gate] = imx_clk_gate("kpp_ipg_gate", "ipg", CCM_PCCR0, 15);
140 clk[iim_ipg_gate] = imx_clk_gate("iim_ipg_gate", "ipg", CCM_PCCR0, 16);
141 clk[i2c2_ipg_gate] = imx_clk_gate("i2c2_ipg_gate", "ipg", CCM_PCCR0, 17);
142 clk[i2c1_ipg_gate] = imx_clk_gate("i2c1_ipg_gate", "ipg", CCM_PCCR0, 18);
143 clk[gpt6_ipg_gate] = imx_clk_gate("gpt6_ipg_gate", "ipg", CCM_PCCR0, 19);
144 clk[gpt5_ipg_gate] = imx_clk_gate("gpt5_ipg_gate", "ipg", CCM_PCCR0, 20);
145 clk[gpt4_ipg_gate] = imx_clk_gate("gpt4_ipg_gate", "ipg", CCM_PCCR0, 21);
146 clk[gpt3_ipg_gate] = imx_clk_gate("gpt3_ipg_gate", "ipg", CCM_PCCR0, 22);
147 clk[gpt2_ipg_gate] = imx_clk_gate("gpt2_ipg_gate", "ipg", CCM_PCCR0, 23);
148 clk[gpt1_ipg_gate] = imx_clk_gate("gpt1_ipg_gate", "ipg", CCM_PCCR0, 24);
149 clk[gpio_ipg_gate] = imx_clk_gate("gpio_ipg_gate", "ipg", CCM_PCCR0, 25);
150 clk[fec_ipg_gate] = imx_clk_gate("fec_ipg_gate", "ipg", CCM_PCCR0, 26);
151 clk[emma_ipg_gate] = imx_clk_gate("emma_ipg_gate", "ipg", CCM_PCCR0, 27);
152 clk[dma_ipg_gate] = imx_clk_gate("dma_ipg_gate", "ipg", CCM_PCCR0, 28);
153 clk[cspi3_ipg_gate] = imx_clk_gate("cspi3_ipg_gate", "ipg", CCM_PCCR0, 29);
154 clk[cspi2_ipg_gate] = imx_clk_gate("cspi2_ipg_gate", "ipg", CCM_PCCR0, 30);
155 clk[cspi1_ipg_gate] = imx_clk_gate("cspi1_ipg_gate", "ipg", CCM_PCCR0, 31);
156 clk[nfc_baud_gate] = imx_clk_gate("nfc_baud_gate", "nfc_div", CCM_PCCR1, 3);
157 clk[ssi2_baud_gate] = imx_clk_gate("ssi2_baud_gate", "ssi2_div", CCM_PCCR1, 4);
158 clk[ssi1_baud_gate] = imx_clk_gate("ssi1_baud_gate", "ssi1_div", CCM_PCCR1, 5);
159 clk[vpu_baud_gate] = imx_clk_gate("vpu_baud_gate", "vpu_div", CCM_PCCR1, 6);
160 clk[per4_gate] = imx_clk_gate("per4_gate", "per4_div", CCM_PCCR1, 7);
161 clk[per3_gate] = imx_clk_gate("per3_gate", "per3_div", CCM_PCCR1, 8);
162 clk[per2_gate] = imx_clk_gate("per2_gate", "per2_div", CCM_PCCR1, 9);
163 clk[per1_gate] = imx_clk_gate("per1_gate", "per1_div", CCM_PCCR1, 10);
164 clk[usb_ahb_gate] = imx_clk_gate("usb_ahb_gate", "ahb", CCM_PCCR1, 11);
165 clk[slcdc_ahb_gate] = imx_clk_gate("slcdc_ahb_gate", "ahb", CCM_PCCR1, 12);
166 clk[sahara_ahb_gate] = imx_clk_gate("sahara_ahb_gate", "ahb", CCM_PCCR1, 13);
167 clk[lcdc_ahb_gate] = imx_clk_gate("lcdc_ahb_gate", "ahb", CCM_PCCR1, 15);
168 clk[vpu_ahb_gate] = imx_clk_gate("vpu_ahb_gate", "ahb", CCM_PCCR1, 16);
169 clk[fec_ahb_gate] = imx_clk_gate("fec_ahb_gate", "ahb", CCM_PCCR1, 17);
170 clk[emma_ahb_gate] = imx_clk_gate("emma_ahb_gate", "ahb", CCM_PCCR1, 18);
171 clk[emi_ahb_gate] = imx_clk_gate("emi_ahb_gate", "ahb", CCM_PCCR1, 19);
172 clk[dma_ahb_gate] = imx_clk_gate("dma_ahb_gate", "ahb", CCM_PCCR1, 20);
173 clk[csi_ahb_gate] = imx_clk_gate("csi_ahb_gate", "ahb", CCM_PCCR1, 21);
174 clk[brom_ahb_gate] = imx_clk_gate("brom_ahb_gate", "ahb", CCM_PCCR1, 22);
175 clk[ata_ahb_gate] = imx_clk_gate("ata_ahb_gate", "ahb", CCM_PCCR1, 23);
176 clk[wdog_ipg_gate] = imx_clk_gate("wdog_ipg_gate", "ipg", CCM_PCCR1, 24);
177 clk[usb_ipg_gate] = imx_clk_gate("usb_ipg_gate", "ipg", CCM_PCCR1, 25);
178 clk[uart6_ipg_gate] = imx_clk_gate("uart6_ipg_gate", "ipg", CCM_PCCR1, 26);
179 clk[uart5_ipg_gate] = imx_clk_gate("uart5_ipg_gate", "ipg", CCM_PCCR1, 27);
180 clk[uart4_ipg_gate] = imx_clk_gate("uart4_ipg_gate", "ipg", CCM_PCCR1, 28);
181 clk[uart3_ipg_gate] = imx_clk_gate("uart3_ipg_gate", "ipg", CCM_PCCR1, 29);
182 clk[uart2_ipg_gate] = imx_clk_gate("uart2_ipg_gate", "ipg", CCM_PCCR1, 30);
183 clk[uart1_ipg_gate] = imx_clk_gate("uart1_ipg_gate", "ipg", CCM_PCCR1, 31);
184
185 for (i = 0; i < ARRAY_SIZE(clk); i++)
186 if (IS_ERR(clk[i]))
187 pr_err("i.MX27 clk %d: register failed with %ld\n",
188 i, PTR_ERR(clk[i]));
189
190 clk_register_clkdev(clk[uart1_ipg_gate], "ipg", "imx21-uart.0");
191 clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.0");
192 clk_register_clkdev(clk[uart2_ipg_gate], "ipg", "imx21-uart.1");
193 clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.1");
194 clk_register_clkdev(clk[uart3_ipg_gate], "ipg", "imx21-uart.2");
195 clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.2");
196 clk_register_clkdev(clk[uart4_ipg_gate], "ipg", "imx21-uart.3");
197 clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.3");
198 clk_register_clkdev(clk[uart5_ipg_gate], "ipg", "imx21-uart.4");
199 clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.4");
200 clk_register_clkdev(clk[uart6_ipg_gate], "ipg", "imx21-uart.5");
201 clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.5");
202 clk_register_clkdev(clk[gpt1_ipg_gate], "ipg", "imx-gpt.0");
203 clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.0");
204 clk_register_clkdev(clk[gpt2_ipg_gate], "ipg", "imx-gpt.1");
205 clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.1");
206 clk_register_clkdev(clk[gpt3_ipg_gate], "ipg", "imx-gpt.2");
207 clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.2");
208 clk_register_clkdev(clk[gpt4_ipg_gate], "ipg", "imx-gpt.3");
209 clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.3");
210 clk_register_clkdev(clk[gpt5_ipg_gate], "ipg", "imx-gpt.4");
211 clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.4");
212 clk_register_clkdev(clk[gpt6_ipg_gate], "ipg", "imx-gpt.5");
213 clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.5");
214 clk_register_clkdev(clk[pwm_ipg_gate], NULL, "mxc_pwm.0");
215 clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.0");
216 clk_register_clkdev(clk[sdhc1_ipg_gate], "ipg", "mxc-mmc.0");
217 clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.1");
218 clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "mxc-mmc.1");
219 clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.2");
220 clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "mxc-mmc.2");
221 clk_register_clkdev(clk[cspi1_ipg_gate], NULL, "imx27-cspi.0");
222 clk_register_clkdev(clk[cspi2_ipg_gate], NULL, "imx27-cspi.1");
223 clk_register_clkdev(clk[cspi3_ipg_gate], NULL, "imx27-cspi.2");
224 clk_register_clkdev(clk[per3_gate], "per", "imx-fb.0");
225 clk_register_clkdev(clk[lcdc_ipg_gate], "ipg", "imx-fb.0");
226 clk_register_clkdev(clk[lcdc_ahb_gate], "ahb", "imx-fb.0");
Javier Martin9de76b62012-07-26 13:20:34 +0200227 clk_register_clkdev(clk[csi_ahb_gate], "ahb", "mx2-camera.0");
Sascha Hauere038ed52012-03-09 09:11:46 +0100228 clk_register_clkdev(clk[usb_div], "per", "fsl-usb2-udc");
229 clk_register_clkdev(clk[usb_ipg_gate], "ipg", "fsl-usb2-udc");
230 clk_register_clkdev(clk[usb_ahb_gate], "ahb", "fsl-usb2-udc");
231 clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.0");
232 clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.0");
233 clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.0");
234 clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.1");
235 clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.1");
236 clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.1");
237 clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.2");
238 clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.2");
239 clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.2");
240 clk_register_clkdev(clk[ssi1_ipg_gate], NULL, "imx-ssi.0");
241 clk_register_clkdev(clk[ssi2_ipg_gate], NULL, "imx-ssi.1");
Shawn Guo4d624352012-09-15 13:34:09 +0800242 clk_register_clkdev(clk[nfc_baud_gate], NULL, "imx27-nand.0");
Javier Martin6d8c4522012-07-26 05:45:32 -0300243 clk_register_clkdev(clk[vpu_baud_gate], "per", "coda-imx27.0");
244 clk_register_clkdev(clk[vpu_ahb_gate], "ahb", "coda-imx27.0");
Sascha Hauere038ed52012-03-09 09:11:46 +0100245 clk_register_clkdev(clk[dma_ahb_gate], "ahb", "imx-dma");
246 clk_register_clkdev(clk[dma_ipg_gate], "ipg", "imx-dma");
247 clk_register_clkdev(clk[fec_ipg_gate], "ipg", "imx27-fec.0");
248 clk_register_clkdev(clk[fec_ahb_gate], "ahb", "imx27-fec.0");
249 clk_register_clkdev(clk[wdog_ipg_gate], NULL, "imx2-wdt.0");
Shawn Guo5bdfba22012-09-14 15:19:00 +0800250 clk_register_clkdev(clk[i2c1_ipg_gate], NULL, "imx21-i2c.0");
251 clk_register_clkdev(clk[i2c2_ipg_gate], NULL, "imx21-i2c.1");
Sascha Hauere038ed52012-03-09 09:11:46 +0100252 clk_register_clkdev(clk[owire_ipg_gate], NULL, "mxc_w1.0");
253 clk_register_clkdev(clk[kpp_ipg_gate], NULL, "imx-keypad");
Javier Martin9de76b62012-07-26 13:20:34 +0200254 clk_register_clkdev(clk[emma_ahb_gate], "emma-ahb", "mx2-camera.0");
255 clk_register_clkdev(clk[emma_ipg_gate], "emma-ipg", "mx2-camera.0");
256 clk_register_clkdev(clk[emma_ahb_gate], "ahb", "m2m-emmaprp.0");
257 clk_register_clkdev(clk[emma_ipg_gate], "ipg", "m2m-emmaprp.0");
Sascha Hauere038ed52012-03-09 09:11:46 +0100258 clk_register_clkdev(clk[iim_ipg_gate], "iim", NULL);
259 clk_register_clkdev(clk[gpio_ipg_gate], "gpio", NULL);
260 clk_register_clkdev(clk[brom_ahb_gate], "brom", NULL);
261 clk_register_clkdev(clk[ata_ahb_gate], "ata", NULL);
Shawn Guobb1d34a2012-09-15 14:26:14 +0800262 clk_register_clkdev(clk[rtc_ipg_gate], NULL, "imx21-rtc");
Sascha Hauere038ed52012-03-09 09:11:46 +0100263 clk_register_clkdev(clk[scc_ipg_gate], "scc", NULL);
264 clk_register_clkdev(clk[cpu_div], "cpu", NULL);
265 clk_register_clkdev(clk[emi_ahb_gate], "emi_ahb" , NULL);
266 clk_register_clkdev(clk[ssi1_baud_gate], "bitrate" , "imx-ssi.0");
267 clk_register_clkdev(clk[ssi2_baud_gate], "bitrate" , "imx-ssi.1");
268
Sascha Hauer2cfb4512012-05-16 12:29:53 +0200269 mxc_timer_init(MX27_IO_ADDRESS(MX27_GPT1_BASE_ADDR), MX27_INT_GPT1);
Sascha Hauere038ed52012-03-09 09:11:46 +0100270
271 clk_prepare_enable(clk[emi_ahb_gate]);
272
Fabio Estevam1b76b742012-07-06 19:04:35 -0300273 imx_print_silicon_rev("i.MX27", mx27_revision());
274
Sascha Hauere038ed52012-03-09 09:11:46 +0100275 return 0;
276}
277
278#ifdef CONFIG_OF
279int __init mx27_clocks_init_dt(void)
280{
281 struct device_node *np;
282 u32 fref = 26000000; /* default */
283
284 for_each_compatible_node(np, NULL, "fixed-clock") {
285 if (!of_device_is_compatible(np, "fsl,imx-osc26m"))
286 continue;
287
288 if (!of_property_read_u32(np, "clock-frequency", &fref))
289 break;
290 }
291
292 return mx27_clocks_init(fref);
293}
294#endif