diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nfc/trf7970a.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index 3b78b031e617..5355d0e4c045 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -1251,6 +1251,12 @@ static int trf7970a_get_autosuspend_delay(struct device_node *np) return autosuspend_delay; } +static int trf7970a_get_vin_voltage_override(struct device_node *np, + u32 *vin_uvolts) +{ + return of_property_read_u32(np, "vin-voltage-override", vin_uvolts); +} + static int trf7970a_probe(struct spi_device *spi) { struct device_node *np = spi->dev.of_node; @@ -1326,7 +1332,9 @@ static int trf7970a_probe(struct spi_device *spi) goto err_destroy_lock; } - uvolts = regulator_get_voltage(trf->regulator); + ret = trf7970a_get_vin_voltage_override(np, &uvolts); + if (ret) + uvolts = regulator_get_voltage(trf->regulator); if (uvolts > 4000000) trf->chip_status_ctrl = TRF7970A_CHIP_STATUS_VRS5_3; |