// SPDX-License-Identifier: GPL-2.0-only
/*
* OMAP and TWL PMIC specific initializations .
*
* Copyright ( C ) 2010 Texas Instruments Incorporated .
* Thara Gopinath
* Copyright ( C ) 2009 Texas Instruments Incorporated .
* Nishanth Menon
* Copyright ( C ) 2009 Nokia Corporation
* Paul Walmsley
*/
#include <linux/err.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/mfd/twl.h>
#include "soc.h"
#include "voltage.h"
#include "pm.h"
#define OMAP3_SRI2C_SLAVE_ADDR 0 x12
#define OMAP3_VDD_MPU_SR_CONTROL_REG 0 x00
#define OMAP3_VDD_CORE_SR_CONTROL_REG 0 x01
#define OMAP3_VP_CONFIG_ERROROFFSET 0 x00
#define OMAP3_VP_VSTEPMIN_VSTEPMIN 0 x1
#define OMAP3_VP_VSTEPMAX_VSTEPMAX 0 x04
#define OMAP3_VP_VLIMITTO_TIMEOUT_US 200
#define OMAP4_SRI2C_SLAVE_ADDR 0 x12
#define OMAP4_VDD_MPU_SR_VOLT_REG 0 x55
#define OMAP4_VDD_MPU_SR_CMD_REG 0 x56
#define OMAP4_VDD_IVA_SR_VOLT_REG 0 x5B
#define OMAP4_VDD_IVA_SR_CMD_REG 0 x5C
#define OMAP4_VDD_CORE_SR_VOLT_REG 0 x61
#define OMAP4_VDD_CORE_SR_CMD_REG 0 x62
static bool is_offset_valid;
static u8 smps_offset;
#define REG_SMPS_OFFSET 0 xE0
static unsigned long twl4030_vsel_to_uv(const u8 vsel)
{
return (((vsel * 125 ) + 6000 )) * 100 ;
}
static u8 twl4030_uv_to_vsel(unsigned long uv)
{
return DIV_ROUND_UP(uv - 600000 , 12500 );
}
static unsigned long twl6030_vsel_to_uv(const u8 vsel)
{
/*
* In TWL6030 depending on the value of SMPS_OFFSET
* efuse register the voltage range supported in
* standard mode can be either between 0 . 6 V - 1 . 3 V or
* 0 . 7 V - 1 . 4 V . In TWL6030 ES1 . 0 SMPS_OFFSET efuse
* is programmed to all 0 ' s where as starting from
* TWL6030 ES1 . 1 the efuse is programmed to 1
*/
if (!is_offset_valid) {
twl_i2c_read_u8(TWL6030_MODULE_ID0, &smps_offset,
REG_SMPS_OFFSET);
is_offset_valid = true ;
}
if (!vsel)
return 0 ;
/*
* There is no specific formula for voltage to vsel
* conversion above 1 . 3 V . There are special hardcoded
* values for voltages above 1 . 3 V . Currently we are
* hardcoding only for 1 . 35 V which is used for 1 GH OPP for
* OMAP4430 .
*/
if (vsel == 0 x3A)
return 1350000 ;
if (smps_offset & 0 x8)
return ((((vsel - 1 ) * 1266 ) + 70900 )) * 10 ;
else
return ((((vsel - 1 ) * 1266 ) + 60770 )) * 10 ;
}
static u8 twl6030_uv_to_vsel(unsigned long uv)
{
/*
* In TWL6030 depending on the value of SMPS_OFFSET
* efuse register the voltage range supported in
* standard mode can be either between 0 . 6 V - 1 . 3 V or
* 0 . 7 V - 1 . 4 V . In TWL6030 ES1 . 0 SMPS_OFFSET efuse
* is programmed to all 0 ' s where as starting from
* TWL6030 ES1 . 1 the efuse is programmed to 1
*/
if (!is_offset_valid) {
twl_i2c_read_u8(TWL6030_MODULE_ID0, &smps_offset,
REG_SMPS_OFFSET);
is_offset_valid = true ;
}
if (!uv)
return 0 x00;
/*
* There is no specific formula for voltage to vsel
* conversion above 1 . 3 V . There are special hardcoded
* values for voltages above 1 . 3 V . Currently we are
* hardcoding only for 1 . 35 V which is used for 1 GH OPP for
* OMAP4430 .
*/
if (uv > twl6030_vsel_to_uv(0 x39)) {
if (uv == 1350000 )
return 0 x3A;
pr_err("%s:OUT OF RANGE! non mapped vsel for %ld Vs max %ld\n" ,
__func__, uv, twl6030_vsel_to_uv(0 x39));
return 0 x3A;
}
if (smps_offset & 0 x8)
return DIV_ROUND_UP(uv - 709000 , 12660 ) + 1 ;
else
return DIV_ROUND_UP(uv - 607700 , 12660 ) + 1 ;
}
static struct omap_voltdm_pmic omap3_mpu_pmic = {
.slew_rate = 4000 ,
.step_size = 12500 ,
.vp_erroroffset = OMAP3_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP3_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP3_VP_VSTEPMAX_VSTEPMAX,
.vddmin = 600000 ,
.vddmax = 1450000 ,
.vp_timeout_us = OMAP3_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP3_SRI2C_SLAVE_ADDR,
.volt_reg_addr = OMAP3_VDD_MPU_SR_CONTROL_REG,
.i2c_high_speed = true ,
.vsel_to_uv = twl4030_vsel_to_uv,
.uv_to_vsel = twl4030_uv_to_vsel,
};
static struct omap_voltdm_pmic omap3_core_pmic = {
.slew_rate = 4000 ,
.step_size = 12500 ,
.vp_erroroffset = OMAP3_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP3_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP3_VP_VSTEPMAX_VSTEPMAX,
.vddmin = 600000 ,
.vddmax = 1450000 ,
.vp_timeout_us = OMAP3_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP3_SRI2C_SLAVE_ADDR,
.volt_reg_addr = OMAP3_VDD_CORE_SR_CONTROL_REG,
.i2c_high_speed = true ,
.vsel_to_uv = twl4030_vsel_to_uv,
.uv_to_vsel = twl4030_uv_to_vsel,
};
static struct omap_voltdm_pmic omap4_mpu_pmic = {
.slew_rate = 4000 ,
.step_size = 12660 ,
.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
.vddmin = 0 ,
.vddmax = 2100000 ,
.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
.volt_reg_addr = OMAP4_VDD_MPU_SR_VOLT_REG,
.cmd_reg_addr = OMAP4_VDD_MPU_SR_CMD_REG,
.i2c_high_speed = true ,
.i2c_pad_load = 3 ,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};
static struct omap_voltdm_pmic omap4_iva_pmic = {
.slew_rate = 4000 ,
.step_size = 12660 ,
.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
.vddmin = 0 ,
.vddmax = 2100000 ,
.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
.volt_reg_addr = OMAP4_VDD_IVA_SR_VOLT_REG,
.cmd_reg_addr = OMAP4_VDD_IVA_SR_CMD_REG,
.i2c_high_speed = true ,
.i2c_pad_load = 3 ,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};
static struct omap_voltdm_pmic omap4_core_pmic = {
.slew_rate = 4000 ,
.step_size = 12660 ,
.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
.vddmin = 0 ,
.vddmax = 2100000 ,
.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
.volt_reg_addr = OMAP4_VDD_CORE_SR_VOLT_REG,
.cmd_reg_addr = OMAP4_VDD_CORE_SR_CMD_REG,
.i2c_high_speed = true ,
.i2c_pad_load = 3 ,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};
int __init omap4_twl_init(void )
{
struct voltagedomain *voltdm;
if (!cpu_is_omap44xx() ||
of_find_compatible_node(NULL, NULL, "motorola,cpcap" ))
return -ENODEV;
voltdm = voltdm_lookup("mpu" );
omap_voltage_register_pmic(voltdm, &omap4_mpu_pmic);
voltdm = voltdm_lookup("iva" );
omap_voltage_register_pmic(voltdm, &omap4_iva_pmic);
voltdm = voltdm_lookup("core" );
omap_voltage_register_pmic(voltdm, &omap4_core_pmic);
return 0 ;
}
int __init omap3_twl_init(void )
{
struct voltagedomain *voltdm;
if (!cpu_is_omap34xx())
return -ENODEV;
voltdm = voltdm_lookup("mpu_iva" );
omap_voltage_register_pmic(voltdm, &omap3_mpu_pmic);
voltdm = voltdm_lookup("core" );
omap_voltage_register_pmic(voltdm, &omap3_core_pmic);
return 0 ;
}
Messung V0.5 in Prozent C=98 H=100 G=98
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(vorverarbeitet am 2026-09-28)
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