u-boot/board/freescale/common/pfuze.c
Fabio Estevam 7ab832e409 pfuze: Fix the pmic_get() parameter in the DM case
Currently the following hang is observed when booting a imx6sx-sdb
board:

U-Boot 2020.01-rc5-00004-g643366bcd5 (Dec 19 2019 - 14:56:23 -0300)

CPU:   Freescale i.MX6SX rev1.0 996 MHz (running at 792 MHz)
CPU:   Extended Commercial temperature grade (-20C to 105C) at 32C
Reset cause: POR
Model: Freescale i.MX6 SoloX SDB RevB Board
Board: MX6SX SABRE SDB revA
DRAM:  1 GiB
initcall sequence bffd8514 failed at call 87804cc0 (err=-19)
### ERROR ### Please RESET the board ###

When pmic_get() is used with DM the first parameter must be
the complete node name plus the unit address.

Fix the pmic_get() parameter to fix the boot regression.

Tested on a imx6sx-sdb and imx6q-sabresd boards.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2019-12-27 12:13:11 +01:00

173 lines
3.9 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2014 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <errno.h>
#include <power/pmic.h>
#include <power/pfuze100_pmic.h>
#ifndef CONFIG_DM_PMIC_PFUZE100
int pfuze_mode_init(struct pmic *p, u32 mode)
{
unsigned char offset, i, switch_num;
u32 id;
int ret;
pmic_reg_read(p, PFUZE100_DEVICEID, &id);
id = id & 0xf;
if (id == 0) {
switch_num = 6;
offset = PFUZE100_SW1CMODE;
} else if (id == 1) {
switch_num = 4;
offset = PFUZE100_SW2MODE;
} else {
printf("Not supported, id=%d\n", id);
return -EINVAL;
}
ret = pmic_reg_write(p, PFUZE100_SW1ABMODE, mode);
if (ret < 0) {
printf("Set SW1AB mode error!\n");
return ret;
}
for (i = 0; i < switch_num - 1; i++) {
ret = pmic_reg_write(p, offset + i * SWITCH_SIZE, mode);
if (ret < 0) {
printf("Set switch 0x%x mode error!\n",
offset + i * SWITCH_SIZE);
return ret;
}
}
return ret;
}
struct pmic *pfuze_common_init(unsigned char i2cbus)
{
struct pmic *p;
int ret;
unsigned int reg;
ret = power_pfuze100_init(i2cbus);
if (ret)
return NULL;
p = pmic_get("PFUZE100");
ret = pmic_probe(p);
if (ret)
return NULL;
pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
printf("PMIC: PFUZE100 ID=0x%02x\n", reg);
/* Set SW1AB stanby volage to 0.975V */
pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
reg &= ~SW1x_STBY_MASK;
reg |= SW1x_0_975V;
pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
/* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
pmic_reg_read(p, PFUZE100_SW1ABCONF, &reg);
reg &= ~SW1xCONF_DVSSPEED_MASK;
reg |= SW1xCONF_DVSSPEED_4US;
pmic_reg_write(p, PFUZE100_SW1ABCONF, reg);
/* Set SW1C standby voltage to 0.975V */
pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
reg &= ~SW1x_STBY_MASK;
reg |= SW1x_0_975V;
pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
/* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
reg &= ~SW1xCONF_DVSSPEED_MASK;
reg |= SW1xCONF_DVSSPEED_4US;
pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
return p;
}
#else
int pfuze_mode_init(struct udevice *dev, u32 mode)
{
unsigned char offset, i, switch_num;
u32 id;
int ret;
id = pmic_reg_read(dev, PFUZE100_DEVICEID);
id = id & 0xf;
if (id == 0) {
switch_num = 6;
offset = PFUZE100_SW1CMODE;
} else if (id == 1) {
switch_num = 4;
offset = PFUZE100_SW2MODE;
} else {
printf("Not supported, id=%d\n", id);
return -EINVAL;
}
ret = pmic_reg_write(dev, PFUZE100_SW1ABMODE, mode);
if (ret < 0) {
printf("Set SW1AB mode error!\n");
return ret;
}
for (i = 0; i < switch_num - 1; i++) {
ret = pmic_reg_write(dev, offset + i * SWITCH_SIZE, mode);
if (ret < 0) {
printf("Set switch 0x%x mode error!\n",
offset + i * SWITCH_SIZE);
return ret;
}
}
return ret;
}
struct udevice *pfuze_common_init(void)
{
struct udevice *dev;
int ret;
unsigned int reg, dev_id, rev_id;
ret = pmic_get("pfuze100@8", &dev);
if (ret == -ENODEV)
return NULL;
dev_id = pmic_reg_read(dev, PFUZE100_DEVICEID);
rev_id = pmic_reg_read(dev, PFUZE100_REVID);
printf("PMIC: PFUZE100! DEV_ID=0x%x REV_ID=0x%x\n", dev_id, rev_id);
/* Set SW1AB stanby volage to 0.975V */
reg = pmic_reg_read(dev, PFUZE100_SW1ABSTBY);
reg &= ~SW1x_STBY_MASK;
reg |= SW1x_0_975V;
pmic_reg_write(dev, PFUZE100_SW1ABSTBY, reg);
/* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
reg = pmic_reg_read(dev, PFUZE100_SW1ABCONF);
reg &= ~SW1xCONF_DVSSPEED_MASK;
reg |= SW1xCONF_DVSSPEED_4US;
pmic_reg_write(dev, PFUZE100_SW1ABCONF, reg);
/* Set SW1C standby voltage to 0.975V */
reg = pmic_reg_read(dev, PFUZE100_SW1CSTBY);
reg &= ~SW1x_STBY_MASK;
reg |= SW1x_0_975V;
pmic_reg_write(dev, PFUZE100_SW1CSTBY, reg);
/* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
reg = pmic_reg_read(dev, PFUZE100_SW1CCONF);
reg &= ~SW1xCONF_DVSSPEED_MASK;
reg |= SW1xCONF_DVSSPEED_4US;
pmic_reg_write(dev, PFUZE100_SW1CCONF, reg);
return dev;
}
#endif