1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * OMAP3/OMAP4 Voltage Management Routines |
4 | * |
5 | * Author: Thara Gopinath <thara@ti.com> |
6 | * |
7 | * Copyright (C) 2007 Texas Instruments, Inc. |
8 | * Rajendra Nayak <rnayak@ti.com> |
9 | * Lesly A M <x0080970@ti.com> |
10 | * |
11 | * Copyright (C) 2008 Nokia Corporation |
12 | * Kalle Jokiniemi |
13 | * |
14 | * Copyright (C) 2010 Texas Instruments, Inc. |
15 | * Thara Gopinath <thara@ti.com> |
16 | */ |
17 | #include <linux/kernel.h> |
18 | #include <linux/err.h> |
19 | #include <linux/init.h> |
20 | |
21 | #include "common.h" |
22 | #include "soc.h" |
23 | #include "prm-regbits-44xx.h" |
24 | #include "prm44xx.h" |
25 | #include "prcm44xx.h" |
26 | #include "prminst44xx.h" |
27 | #include "voltage.h" |
28 | #include "omap_opp_data.h" |
29 | #include "vc.h" |
30 | #include "vp.h" |
31 | |
32 | static const struct omap_vfsm_instance omap4_vdd_mpu_vfsm = { |
33 | .voltsetup_reg = OMAP4_PRM_VOLTSETUP_MPU_RET_SLEEP_OFFSET, |
34 | .voltsetup_off_reg = OMAP4_PRM_VOLTSETUP_MPU_OFF_OFFSET, |
35 | }; |
36 | |
37 | static const struct omap_vfsm_instance omap4_vdd_iva_vfsm = { |
38 | .voltsetup_reg = OMAP4_PRM_VOLTSETUP_IVA_RET_SLEEP_OFFSET, |
39 | .voltsetup_off_reg = OMAP4_PRM_VOLTSETUP_IVA_OFF_OFFSET, |
40 | }; |
41 | |
42 | static const struct omap_vfsm_instance omap4_vdd_core_vfsm = { |
43 | .voltsetup_reg = OMAP4_PRM_VOLTSETUP_CORE_RET_SLEEP_OFFSET, |
44 | .voltsetup_off_reg = OMAP4_PRM_VOLTSETUP_CORE_OFF_OFFSET, |
45 | }; |
46 | |
47 | static struct voltagedomain omap4_voltdm_mpu = { |
48 | .name = "mpu" , |
49 | .scalable = true, |
50 | .read = omap4_prm_vcvp_read, |
51 | .write = omap4_prm_vcvp_write, |
52 | .rmw = omap4_prm_vcvp_rmw, |
53 | .vc = &omap4_vc_mpu, |
54 | .vfsm = &omap4_vdd_mpu_vfsm, |
55 | .vp = &omap4_vp_mpu, |
56 | }; |
57 | |
58 | static struct voltagedomain omap4_voltdm_iva = { |
59 | .name = "iva" , |
60 | .scalable = true, |
61 | .read = omap4_prm_vcvp_read, |
62 | .write = omap4_prm_vcvp_write, |
63 | .rmw = omap4_prm_vcvp_rmw, |
64 | .vc = &omap4_vc_iva, |
65 | .vfsm = &omap4_vdd_iva_vfsm, |
66 | .vp = &omap4_vp_iva, |
67 | }; |
68 | |
69 | static struct voltagedomain omap4_voltdm_core = { |
70 | .name = "core" , |
71 | .scalable = true, |
72 | .read = omap4_prm_vcvp_read, |
73 | .write = omap4_prm_vcvp_write, |
74 | .rmw = omap4_prm_vcvp_rmw, |
75 | .vc = &omap4_vc_core, |
76 | .vfsm = &omap4_vdd_core_vfsm, |
77 | .vp = &omap4_vp_core, |
78 | }; |
79 | |
80 | static struct voltagedomain omap4_voltdm_wkup = { |
81 | .name = "wakeup" , |
82 | }; |
83 | |
84 | static struct voltagedomain *voltagedomains_omap4[] __initdata = { |
85 | &omap4_voltdm_mpu, |
86 | &omap4_voltdm_iva, |
87 | &omap4_voltdm_core, |
88 | &omap4_voltdm_wkup, |
89 | NULL, |
90 | }; |
91 | |
92 | static const char *const sys_clk_name __initconst = "sys_clkin_ck" ; |
93 | |
94 | void __init omap44xx_voltagedomains_init(void) |
95 | { |
96 | struct voltagedomain *voltdm; |
97 | int i; |
98 | |
99 | /* |
100 | * XXX Will depend on the process, validation, and binning |
101 | * for the currently-running IC |
102 | */ |
103 | #ifdef CONFIG_PM_OPP |
104 | if (cpu_is_omap443x()) { |
105 | omap4_voltdm_mpu.volt_data = omap443x_vdd_mpu_volt_data; |
106 | omap4_voltdm_iva.volt_data = omap443x_vdd_iva_volt_data; |
107 | omap4_voltdm_core.volt_data = omap443x_vdd_core_volt_data; |
108 | } else if (cpu_is_omap446x()) { |
109 | omap4_voltdm_mpu.volt_data = omap446x_vdd_mpu_volt_data; |
110 | omap4_voltdm_iva.volt_data = omap446x_vdd_iva_volt_data; |
111 | omap4_voltdm_core.volt_data = omap446x_vdd_core_volt_data; |
112 | } |
113 | #endif |
114 | |
115 | omap4_voltdm_mpu.vp_param = &omap4_mpu_vp_data; |
116 | omap4_voltdm_iva.vp_param = &omap4_iva_vp_data; |
117 | omap4_voltdm_core.vp_param = &omap4_core_vp_data; |
118 | |
119 | omap4_voltdm_mpu.vc_param = &omap4_mpu_vc_data; |
120 | omap4_voltdm_iva.vc_param = &omap4_iva_vc_data; |
121 | omap4_voltdm_core.vc_param = &omap4_core_vc_data; |
122 | |
123 | for (i = 0; voltdm = voltagedomains_omap4[i], voltdm; i++) |
124 | voltdm->sys_clk.name = sys_clk_name; |
125 | |
126 | voltdm_init(voltdm_list: voltagedomains_omap4); |
127 | }; |
128 | |