From ef04fdc999ee40a58d513ea48d391c7dc78c908c Mon Sep 17 00:00:00 2001 From: Cheick Traore Date: Thu, 24 Sep 2026 11:53:56 +0200 Subject: [PATCH] iio: adc: stm32: fix minimum sampling time values - On stm32mp15: vddcpu and vddq_ddr are not connected to internal channel, so their sampling time shouldn't be set. - On stm32mp13: vddcpu and vddq_ddr are connected to internal channels and the value for vddcore was not correct. Values from the datasheet are 1us (e.g. 1000ns) for ts_vddcore, ts_vddcpu and ts_vddq_ddr. Fixes: 7cb2303dd024 ("iio: adc: stm32: manage min sampling time on all internal channels") Cc: stable@vger.kernel.org Signed-off-by: Cheick Traore Signed-off-by: Fabrice Gasnier Signed-off-by: Jonathan Cameron --- drivers/iio/adc/stm32-adc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 6aa672177970..3cde89c06ca3 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -2727,7 +2727,7 @@ static const struct stm32_adc_cfg stm32h7_adc_cfg = { .set_ovs = stm32h7_adc_set_ovs, }; -static const unsigned int stm32_adc_min_ts_mp1[] = { 100, 100, 100, 4300, 9800 }; +static const unsigned int stm32_adc_min_ts_mp1[] = { 100, 0, 0, 4300, 9800 }; static_assert(ARRAY_SIZE(stm32_adc_min_ts_mp1) == STM32_ADC_INT_CH_NB); static const struct stm32_adc_cfg stm32mp1_adc_cfg = { @@ -2749,7 +2749,7 @@ static const struct stm32_adc_cfg stm32mp1_adc_cfg = { .set_ovs = stm32h7_adc_set_ovs, }; -static const unsigned int stm32_adc_min_ts_mp13[] = { 100, 0, 0, 4300, 9800 }; +static const unsigned int stm32_adc_min_ts_mp13[] = { 1000, 1000, 1000, 4300, 9800 }; static_assert(ARRAY_SIZE(stm32_adc_min_ts_mp13) == STM32_ADC_INT_CH_NB); static const struct stm32_adc_cfg stm32mp13_adc_cfg = {