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 <tr...@konsulko.com>
Cc: Albert Aribaud <albert.u.b...@aribaud.net>
Cc: Igor Grinberg <grinb...@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nik...@compulab.co.il>
---
board/compulab/cm_t43/cm_t43.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/board/compulab/cm_t43/cm_t43.c b/board/compulab/cm_t43/cm_t43.c
index 445b609..0d5da6f 100644
--- a/board/compulab/cm_t43/cm_t43.c
+++ b/board/compulab/cm_t43/cm_t43.c
@@ -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;
}
--
1.9.1
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