From: Andreas Kemnade andreas@kemnade.info
[ Upstream commit bffb7d9d1a3dbd09e083b88aefd093b3b10abbfb ]
VAC needs to be wired up to produce proper measurements, without this change only near zero values are reported.
Reported-by: kernel test robot lkp@intel.com Reported-by: Julia Lawall julia.lawall@lip6.fr Fixes: 1696f36482e7 ("iio: twl6030-gpadc: TWL6030, TWL6032 GPADC driver") Signed-off-by: Andreas Kemnade andreas@kemnade.info Link: https://lore.kernel.org/r/20221217221305.671117-1-andreas@kemnade.info Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/adc/twl6030-gpadc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c index b9c4722063eb0..3007cfbf84918 100644 --- a/drivers/iio/adc/twl6030-gpadc.c +++ b/drivers/iio/adc/twl6030-gpadc.c @@ -968,7 +968,7 @@ static int twl6030_gpadc_probe(struct platform_device *pdev) }
ret = twl_i2c_write_u8(TWL6030_MODULE_ID0, - VBAT_MEAS | BB_MEAS | BB_MEAS, + VBAT_MEAS | BB_MEAS | VAC_MEAS, TWL6030_MISC1); if (ret < 0) { dev_err(dev, "failed to wire up inputs\n");