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arm: am437x: cm-t43: set tps fseal bit

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Set TPS65218 FSEAL bit to 1 so that RTC could be powered using on-board
3V battery. This is necessary so that time and date will survive reboots and
power offs.

Cc: Tom Rini <trini@konsulko.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Nikita Kiryanov 2016-02-19 19:19:47 +02:00 committed by Tom Rini
parent 9bcfca123c
commit dccaaaeb99
1 changed files with 8 additions and 1 deletions
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9
board/compulab/cm_t43/cm_t43.c
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@ -23,11 +23,18 @@ static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
int power_init_board(void)
{
struct pmic *p;
uchar tps_status = 0;
power_tps65218_init(I2C_PMIC);
p = pmic_get("TPS65218_PMIC");
if (p && !pmic_probe(p))
if (p && !pmic_probe(p)) {
puts("PMIC: TPS65218\n");
/* We don't care if fseal is locked, but we do need it set */
tps65218_lock_fseal();
tps65218_reg_read(TPS65218_STATUS, &tps_status);
if (!(tps_status & TPS65218_FSEAL))
printf("WARNING: RTC not backed by battery!\n");
}
return 0;
}