2 * OMAP and TWL PMIC specific intializations.
4 * Copyright (C) 2010 Texas Instruments Incorporated.
6 * Copyright (C) 2009 Texas Instruments Incorporated.
8 * Copyright (C) 2009 Nokia Corporation
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/err.h>
18 #include <linux/kernel.h>
19 #include <linux/i2c/twl.h>
21 #include <plat/voltage.h>
23 #define OMAP3_SRI2C_SLAVE_ADDR 0x12
24 #define OMAP3_VDD_MPU_SR_CONTROL_REG 0x00
25 #define OMAP3_VDD_CORE_SR_CONTROL_REG 0x01
26 #define OMAP3_VP_CONFIG_ERROROFFSET 0x00
27 #define OMAP3_VP_VSTEPMIN_VSTEPMIN 0x1
28 #define OMAP3_VP_VSTEPMAX_VSTEPMAX 0x04
29 #define OMAP3_VP_VLIMITTO_TIMEOUT_US 200
31 #define OMAP3430_VP1_VLIMITTO_VDDMIN 0x14
32 #define OMAP3430_VP1_VLIMITTO_VDDMAX 0x42
33 #define OMAP3430_VP2_VLIMITTO_VDDMIN 0x18
34 #define OMAP3430_VP2_VLIMITTO_VDDMAX 0x2c
36 #define OMAP3630_VP1_VLIMITTO_VDDMIN 0x18
37 #define OMAP3630_VP1_VLIMITTO_VDDMAX 0x3c
38 #define OMAP3630_VP2_VLIMITTO_VDDMIN 0x18
39 #define OMAP3630_VP2_VLIMITTO_VDDMAX 0x30
41 #define OMAP4_SRI2C_SLAVE_ADDR 0x12
42 #define OMAP4_VDD_MPU_SR_VOLT_REG 0x55
43 #define OMAP4_VDD_IVA_SR_VOLT_REG 0x5B
44 #define OMAP4_VDD_CORE_SR_VOLT_REG 0x61
46 #define OMAP4_VP_CONFIG_ERROROFFSET 0x00
47 #define OMAP4_VP_VSTEPMIN_VSTEPMIN 0x01
48 #define OMAP4_VP_VSTEPMAX_VSTEPMAX 0x04
49 #define OMAP4_VP_VLIMITTO_TIMEOUT_US 200
51 #define OMAP4_VP_MPU_VLIMITTO_VDDMIN 0xA
52 #define OMAP4_VP_MPU_VLIMITTO_VDDMAX 0x39
53 #define OMAP4_VP_IVA_VLIMITTO_VDDMIN 0xA
54 #define OMAP4_VP_IVA_VLIMITTO_VDDMAX 0x2D
55 #define OMAP4_VP_CORE_VLIMITTO_VDDMIN 0xA
56 #define OMAP4_VP_CORE_VLIMITTO_VDDMAX 0x28
58 static bool is_offset_valid;
59 static u8 smps_offset;
61 #define REG_SMPS_OFFSET 0xE0
63 unsigned long twl4030_vsel_to_uv(const u8 vsel)
65 return (((vsel * 125) + 6000)) * 100;
68 u8 twl4030_uv_to_vsel(unsigned long uv)
70 return DIV_ROUND_UP(uv - 600000, 12500);
73 unsigned long twl6030_vsel_to_uv(const u8 vsel)
76 * In TWL6030 depending on the value of SMPS_OFFSET
77 * efuse register the voltage range supported in
78 * standard mode can be either between 0.6V - 1.3V or
79 * 0.7V - 1.4V. In TWL6030 ES1.0 SMPS_OFFSET efuse
80 * is programmed to all 0's where as starting from
81 * TWL6030 ES1.1 the efuse is programmed to 1
83 if (!is_offset_valid) {
84 twl_i2c_read_u8(TWL6030_MODULE_ID0, &smps_offset,
86 is_offset_valid = true;
90 * There is no specific formula for voltage to vsel
91 * conversion above 1.3V. There are special hardcoded
92 * values for voltages above 1.3V. Currently we are
93 * hardcoding only for 1.35 V which is used for 1GH OPP for
99 if (smps_offset & 0x8)
100 return ((((vsel - 1) * 125) + 7000)) * 100;
102 return ((((vsel - 1) * 125) + 6000)) * 100;
105 u8 twl6030_uv_to_vsel(unsigned long uv)
108 * In TWL6030 depending on the value of SMPS_OFFSET
109 * efuse register the voltage range supported in
110 * standard mode can be either between 0.6V - 1.3V or
111 * 0.7V - 1.4V. In TWL6030 ES1.0 SMPS_OFFSET efuse
112 * is programmed to all 0's where as starting from
113 * TWL6030 ES1.1 the efuse is programmed to 1
115 if (!is_offset_valid) {
116 twl_i2c_read_u8(TWL6030_MODULE_ID0, &smps_offset,
118 is_offset_valid = true;
122 * There is no specific formula for voltage to vsel
123 * conversion above 1.3V. There are special hardcoded
124 * values for voltages above 1.3V. Currently we are
125 * hardcoding only for 1.35 V which is used for 1GH OPP for
131 if (smps_offset & 0x8)
132 return DIV_ROUND_UP(uv - 700000, 12500) + 1;
134 return DIV_ROUND_UP(uv - 600000, 12500) + 1;
137 static struct omap_volt_pmic_info omap3_mpu_volt_info = {
141 .onlp_volt = 1000000,
144 .volt_setup_time = 0xfff,
145 .vp_erroroffset = OMAP3_VP_CONFIG_ERROROFFSET,
146 .vp_vstepmin = OMAP3_VP_VSTEPMIN_VSTEPMIN,
147 .vp_vstepmax = OMAP3_VP_VSTEPMAX_VSTEPMAX,
148 .vp_vddmin = OMAP3430_VP1_VLIMITTO_VDDMIN,
149 .vp_vddmax = OMAP3430_VP1_VLIMITTO_VDDMAX,
150 .vp_timeout_us = OMAP3_VP_VLIMITTO_TIMEOUT_US,
151 .i2c_slave_addr = OMAP3_SRI2C_SLAVE_ADDR,
152 .pmic_reg = OMAP3_VDD_MPU_SR_CONTROL_REG,
153 .vsel_to_uv = twl4030_vsel_to_uv,
154 .uv_to_vsel = twl4030_uv_to_vsel,
157 static struct omap_volt_pmic_info omap3_core_volt_info = {
161 .onlp_volt = 1000000,
164 .volt_setup_time = 0xfff,
165 .vp_erroroffset = OMAP3_VP_CONFIG_ERROROFFSET,
166 .vp_vstepmin = OMAP3_VP_VSTEPMIN_VSTEPMIN,
167 .vp_vstepmax = OMAP3_VP_VSTEPMAX_VSTEPMAX,
168 .vp_vddmin = OMAP3430_VP2_VLIMITTO_VDDMIN,
169 .vp_vddmax = OMAP3430_VP2_VLIMITTO_VDDMAX,
170 .vp_timeout_us = OMAP3_VP_VLIMITTO_TIMEOUT_US,
171 .i2c_slave_addr = OMAP3_SRI2C_SLAVE_ADDR,
172 .pmic_reg = OMAP3_VDD_CORE_SR_CONTROL_REG,
173 .vsel_to_uv = twl4030_vsel_to_uv,
174 .uv_to_vsel = twl4030_uv_to_vsel,
177 static struct omap_volt_pmic_info omap4_mpu_volt_info = {
181 .onlp_volt = 1350000,
184 .volt_setup_time = 0,
185 .vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
186 .vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
187 .vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
188 .vp_vddmin = OMAP4_VP_MPU_VLIMITTO_VDDMIN,
189 .vp_vddmax = OMAP4_VP_MPU_VLIMITTO_VDDMAX,
190 .vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
191 .i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
192 .pmic_reg = OMAP4_VDD_MPU_SR_VOLT_REG,
193 .vsel_to_uv = twl6030_vsel_to_uv,
194 .uv_to_vsel = twl6030_uv_to_vsel,
197 static struct omap_volt_pmic_info omap4_iva_volt_info = {
201 .onlp_volt = 1100000,
204 .volt_setup_time = 0,
205 .vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
206 .vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
207 .vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
208 .vp_vddmin = OMAP4_VP_IVA_VLIMITTO_VDDMIN,
209 .vp_vddmax = OMAP4_VP_IVA_VLIMITTO_VDDMAX,
210 .vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
211 .i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
212 .pmic_reg = OMAP4_VDD_IVA_SR_VOLT_REG,
213 .vsel_to_uv = twl6030_vsel_to_uv,
214 .uv_to_vsel = twl6030_uv_to_vsel,
217 static struct omap_volt_pmic_info omap4_core_volt_info = {
221 .onlp_volt = 1100000,
224 .volt_setup_time = 0,
225 .vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
226 .vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
227 .vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
228 .vp_vddmin = OMAP4_VP_CORE_VLIMITTO_VDDMIN,
229 .vp_vddmax = OMAP4_VP_CORE_VLIMITTO_VDDMAX,
230 .vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
231 .i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
232 .pmic_reg = OMAP4_VDD_CORE_SR_VOLT_REG,
233 .vsel_to_uv = twl6030_vsel_to_uv,
234 .uv_to_vsel = twl6030_uv_to_vsel,
237 int __init omap4_twl_init(void)
239 struct voltagedomain *voltdm;
241 if (!cpu_is_omap44xx())
244 voltdm = omap_voltage_domain_lookup("mpu");
245 omap_voltage_register_pmic(voltdm, &omap4_mpu_volt_info);
247 voltdm = omap_voltage_domain_lookup("iva");
248 omap_voltage_register_pmic(voltdm, &omap4_iva_volt_info);
250 voltdm = omap_voltage_domain_lookup("core");
251 omap_voltage_register_pmic(voltdm, &omap4_core_volt_info);
256 int __init omap3_twl_init(void)
258 struct voltagedomain *voltdm;
260 if (!cpu_is_omap34xx())
263 if (cpu_is_omap3630()) {
264 omap3_mpu_volt_info.vp_vddmin = OMAP3630_VP1_VLIMITTO_VDDMIN;
265 omap3_mpu_volt_info.vp_vddmax = OMAP3630_VP1_VLIMITTO_VDDMAX;
266 omap3_core_volt_info.vp_vddmin = OMAP3630_VP2_VLIMITTO_VDDMIN;
267 omap3_core_volt_info.vp_vddmax = OMAP3630_VP2_VLIMITTO_VDDMAX;
270 voltdm = omap_voltage_domain_lookup("mpu");
271 omap_voltage_register_pmic(voltdm, &omap3_mpu_volt_info);
273 voltdm = omap_voltage_domain_lookup("core");
274 omap_voltage_register_pmic(voltdm, &omap3_core_volt_info);