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/*
* Copyright (C) 2014, Toradex AG
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* Helpers for Freescale PMIC PF0100
*/
#include <common.h>
#include <i2c.h>
#include "pf0100_otp.inc"
#include "pf0100.h"
/* 7-bit I2C bus slave address */
#define PFUZE100_I2C_ADDR (0x08)
void pmic_init(void)
{
uchar bus = 1;
uchar devid, revid, val;
puts("PMIC: ");
if(!(0 == i2c_set_bus_num(bus) && (0 == i2c_probe(PFUZE100_I2C_ADDR))))
{
puts("i2c bus failed\n");
return;
}
/* get device ident */
if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_DEVICEID, 1, &devid, 1) < 0)
{
puts("i2c pmic devid read failed\n");
return;
}
if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_REVID, 1, &revid, 1) < 0)
{
puts("i2c pmic revid read failed\n");
return;
}
printf("device id: 0x%.2x, revision id: 0x%.2x\n", devid, revid);
/* set VGEN1 to 1.2V */
val = PFUZE100_VGEN1_VAL;
if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_VGEN1CTL, 1, &val, 1))
{
puts("i2c write failed\n");
return;
}
/* set SWBST to 5.0V */
val = PFUZE100_SWBST_VAL;
if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_SWBSTCTL, 1, &val, 1))
{
puts("i2c write failed\n");
return;
}
}
void pf0100_prog(void)
{
unsigned char bus = 1;
unsigned char val;
unsigned i;
if(!(0 == i2c_set_bus_num(bus) && (0 == i2c_probe(PFUZE100_I2C_ADDR))))
{
puts("i2c bus failed\n");
return;
}
for (i=0; i<ARRAY_SIZE(pmic_otp_prog); i++) {
switch(pmic_otp_prog[i].cmd) {
case pmic_i2c:
val = (unsigned char) (pmic_otp_prog[i].value & 0xff);
if( i2c_write(PFUZE100_I2C_ADDR, pmic_otp_prog[i].reg,
1, &val, 1))
{
printf("i2c write failed, reg 0x%2x, value0x%2x\n",
pmic_otp_prog[i].reg, val);
return;
}
break;
case pmic_delay:
udelay(pmic_otp_prog[i].value * 1000);
break;
case pmic_vpgm:
/* TODO */
break;
case pmic_pwr:
/* TODO */
break;
}
}
}
static int do_pf0100_prog(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
puts("Programming PMIC OTP...");
pf0100_prog();
puts("done. Power cycle the board\n");
return 0;
}
U_BOOT_CMD(
pf0100_otp_prog, 1, 0, do_pf0100_prog,
"Program the OTP fuses on the PMIC PF0100",
""
);
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