1 /*
2  * OMAP3 voltage domain data
3  *
4  * Copyright (C) 2007, 2010 Texas Instruments, Inc.
5  * Rajendra Nayak <rnayak@ti.com>
6  * Lesly A M <x0080970@ti.com>
7  * Thara Gopinath <thara@ti.com>
8  *
9  * Copyright (C) 2008, 2011 Nokia Corporation
10  * Kalle Jokiniemi
11  * Paul Walmsley
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License version 2 as
15  * published by the Free Software Foundation.
16  */
17 #include <linux/kernel.h>
18 #include <linux/err.h>
19 #include <linux/init.h>
20 
21 #include "soc.h"
22 #include "common.h"
23 #include "prm-regbits-34xx.h"
24 #include "omap_opp_data.h"
25 #include "voltage.h"
26 #include "vc.h"
27 #include "vp.h"
28 
29 /*
30  * VDD data
31  */
32 
33 /* OMAP3-common voltagedomain data */
34 
35 static struct voltagedomain omap3_voltdm_wkup = {
36 	.name = "wakeup",
37 };
38 
39 /* 34xx/36xx voltagedomain data */
40 
41 static const struct omap_vfsm_instance omap3_vdd1_vfsm = {
42 	.voltsetup_reg = OMAP3_PRM_VOLTSETUP1_OFFSET,
43 	.voltsetup_mask = OMAP3430_SETUP_TIME1_MASK,
44 };
45 
46 static const struct omap_vfsm_instance omap3_vdd2_vfsm = {
47 	.voltsetup_reg = OMAP3_PRM_VOLTSETUP1_OFFSET,
48 	.voltsetup_mask = OMAP3430_SETUP_TIME2_MASK,
49 };
50 
51 static struct voltagedomain omap3_voltdm_mpu = {
52 	.name = "mpu_iva",
53 	.scalable = true,
54 	.read = omap3_prm_vcvp_read,
55 	.write = omap3_prm_vcvp_write,
56 	.rmw = omap3_prm_vcvp_rmw,
57 	.vc = &omap3_vc_mpu,
58 	.vfsm = &omap3_vdd1_vfsm,
59 	.vp = &omap3_vp_mpu,
60 };
61 
62 static struct voltagedomain omap3_voltdm_core = {
63 	.name = "core",
64 	.scalable = true,
65 	.read = omap3_prm_vcvp_read,
66 	.write = omap3_prm_vcvp_write,
67 	.rmw = omap3_prm_vcvp_rmw,
68 	.vc = &omap3_vc_core,
69 	.vfsm = &omap3_vdd2_vfsm,
70 	.vp = &omap3_vp_core,
71 };
72 
73 static struct voltagedomain *voltagedomains_omap3[] __initdata = {
74 	&omap3_voltdm_mpu,
75 	&omap3_voltdm_core,
76 	&omap3_voltdm_wkup,
77 	NULL,
78 };
79 
80 /* AM35xx voltagedomain data */
81 
82 static struct voltagedomain am35xx_voltdm_mpu = {
83 	.name = "mpu_iva",
84 };
85 
86 static struct voltagedomain am35xx_voltdm_core = {
87 	.name = "core",
88 };
89 
90 static struct voltagedomain *voltagedomains_am35xx[] __initdata = {
91 	&am35xx_voltdm_mpu,
92 	&am35xx_voltdm_core,
93 	&omap3_voltdm_wkup,
94 	NULL,
95 };
96 
97 
98 static const char *const sys_clk_name __initconst = "sys_ck";
99 
100 void __init omap3xxx_voltagedomains_init(void)
101 {
102 	struct voltagedomain *voltdm;
103 	struct voltagedomain **voltdms;
104 	int i;
105 
106 	/*
107 	 * XXX Will depend on the process, validation, and binning
108 	 * for the currently-running IC
109 	 */
110 #ifdef CONFIG_PM_OPP
111 	if (cpu_is_omap3630()) {
112 		omap3_voltdm_mpu.volt_data = omap36xx_vddmpu_volt_data;
113 		omap3_voltdm_core.volt_data = omap36xx_vddcore_volt_data;
114 	} else {
115 		omap3_voltdm_mpu.volt_data = omap34xx_vddmpu_volt_data;
116 		omap3_voltdm_core.volt_data = omap34xx_vddcore_volt_data;
117 	}
118 #endif
119 
120 	omap3_voltdm_mpu.vp_param = &omap3_mpu_vp_data;
121 	omap3_voltdm_core.vp_param = &omap3_core_vp_data;
122 	omap3_voltdm_mpu.vc_param = &omap3_mpu_vc_data;
123 	omap3_voltdm_core.vc_param = &omap3_core_vc_data;
124 
125 	if (soc_is_am35xx())
126 		voltdms = voltagedomains_am35xx;
127 	else
128 		voltdms = voltagedomains_omap3;
129 
130 	for (i = 0; voltdm = voltdms[i], voltdm; i++)
131 		voltdm->sys_clk.name = sys_clk_name;
132 
133 	voltdm_init(voltdms);
134 };
135