1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * OMAP3 voltage domain data
4  *
5  * Copyright (C) 2007, 2010 Texas Instruments, Inc.
6  * Rajendra Nayak <rnayak@ti.com>
7  * Lesly A M <x0080970@ti.com>
8  * Thara Gopinath <thara@ti.com>
9  *
10  * Copyright (C) 2008, 2011 Nokia Corporation
11  * Kalle Jokiniemi
12  * Paul Walmsley
13  */
14 #include <linux/kernel.h>
15 #include <linux/err.h>
16 #include <linux/init.h>
17 
18 #include "soc.h"
19 #include "common.h"
20 #include "prm-regbits-34xx.h"
21 #include "omap_opp_data.h"
22 #include "voltage.h"
23 #include "vc.h"
24 #include "vp.h"
25 
26 /*
27  * VDD data
28  */
29 
30 /* OMAP3-common voltagedomain data */
31 
32 static struct voltagedomain omap3_voltdm_wkup = {
33 	.name = "wakeup",
34 };
35 
36 /* 34xx/36xx voltagedomain data */
37 
38 static const struct omap_vfsm_instance omap3_vdd1_vfsm = {
39 	.voltsetup_reg = OMAP3_PRM_VOLTSETUP1_OFFSET,
40 	.voltsetup_mask = OMAP3430_SETUP_TIME1_MASK,
41 };
42 
43 static const struct omap_vfsm_instance omap3_vdd2_vfsm = {
44 	.voltsetup_reg = OMAP3_PRM_VOLTSETUP1_OFFSET,
45 	.voltsetup_mask = OMAP3430_SETUP_TIME2_MASK,
46 };
47 
48 static struct voltagedomain omap3_voltdm_mpu = {
49 	.name = "mpu_iva",
50 	.scalable = true,
51 	.read = omap3_prm_vcvp_read,
52 	.write = omap3_prm_vcvp_write,
53 	.rmw = omap3_prm_vcvp_rmw,
54 	.vc = &omap3_vc_mpu,
55 	.vfsm = &omap3_vdd1_vfsm,
56 	.vp = &omap3_vp_mpu,
57 };
58 
59 static struct voltagedomain omap3_voltdm_core = {
60 	.name = "core",
61 	.scalable = true,
62 	.read = omap3_prm_vcvp_read,
63 	.write = omap3_prm_vcvp_write,
64 	.rmw = omap3_prm_vcvp_rmw,
65 	.vc = &omap3_vc_core,
66 	.vfsm = &omap3_vdd2_vfsm,
67 	.vp = &omap3_vp_core,
68 };
69 
70 static struct voltagedomain *voltagedomains_omap3[] __initdata = {
71 	&omap3_voltdm_mpu,
72 	&omap3_voltdm_core,
73 	&omap3_voltdm_wkup,
74 	NULL,
75 };
76 
77 /* AM35xx voltagedomain data */
78 
79 static struct voltagedomain am35xx_voltdm_mpu = {
80 	.name = "mpu_iva",
81 };
82 
83 static struct voltagedomain am35xx_voltdm_core = {
84 	.name = "core",
85 };
86 
87 static struct voltagedomain *voltagedomains_am35xx[] __initdata = {
88 	&am35xx_voltdm_mpu,
89 	&am35xx_voltdm_core,
90 	&omap3_voltdm_wkup,
91 	NULL,
92 };
93 
94 
95 static const char *const sys_clk_name __initconst = "sys_ck";
96 
97 void __init omap3xxx_voltagedomains_init(void)
98 {
99 	struct voltagedomain *voltdm;
100 	struct voltagedomain **voltdms;
101 	int i;
102 
103 	/*
104 	 * XXX Will depend on the process, validation, and binning
105 	 * for the currently-running IC
106 	 */
107 #ifdef CONFIG_PM_OPP
108 	if (cpu_is_omap3630()) {
109 		omap3_voltdm_mpu.volt_data = omap36xx_vddmpu_volt_data;
110 		omap3_voltdm_core.volt_data = omap36xx_vddcore_volt_data;
111 	} else {
112 		omap3_voltdm_mpu.volt_data = omap34xx_vddmpu_volt_data;
113 		omap3_voltdm_core.volt_data = omap34xx_vddcore_volt_data;
114 	}
115 #endif
116 
117 	omap3_voltdm_mpu.vp_param = &omap3_mpu_vp_data;
118 	omap3_voltdm_core.vp_param = &omap3_core_vp_data;
119 	omap3_voltdm_mpu.vc_param = &omap3_mpu_vc_data;
120 	omap3_voltdm_core.vc_param = &omap3_core_vc_data;
121 
122 	if (soc_is_am35xx())
123 		voltdms = voltagedomains_am35xx;
124 	else
125 		voltdms = voltagedomains_omap3;
126 
127 	for (i = 0; voltdm = voltdms[i], voltdm; i++)
128 		voltdm->sys_clk.name = sys_clk_name;
129 
130 	voltdm_init(voltdms);
131 };
132