diff options
| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-02-06 19:03:27 +0000 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-02-21 19:33:05 +0000 |
| commit | 48fb57697ee620945b6deca3d688b797acd95450 (patch) | |
| tree | b42a26693f8a03bde3b04a6107c2cefe6cc79277 /drivers/staging/iio | |
| parent | 6c6bc851d8369d00b2466a2c5ac92b5992e09ada (diff) | |
staging:iio:adc:ad7280a: Use more conservative delays to allow 105C operation.
The datasheet provides timings for operating this device at up to 105
degrees centigrade. Adopt these more conservative timings.
Suggested-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Link: https://lore.kernel.org/r/20220206190328.333093-20-jic23@kernel.org
Diffstat (limited to 'drivers/staging/iio')
| -rw-r--r-- | drivers/staging/iio/adc/ad7280a.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c index a7e16144b013..ef9d27759961 100644 --- a/drivers/staging/iio/adc/ad7280a.c +++ b/drivers/staging/iio/adc/ad7280a.c @@ -137,7 +137,7 @@ #define AD7280A_DEVADDR_ALL 0x1F static const unsigned short ad7280a_n_avg[4] = {1, 2, 4, 8}; -static const unsigned short ad7280a_t_acq_ns[4] = {465, 1010, 1460, 1890}; +static const unsigned short ad7280a_t_acq_ns[4] = {470, 1030, 1510, 1945}; /* 5-bit device address is sent LSB first */ static unsigned int ad7280a_devaddr(unsigned int addr) @@ -869,7 +869,7 @@ static void ad7280_update_delay(struct ad7280_state *st) */ st->readback_delay_us = - ((ad7280a_t_acq_ns[st->acquisition_time & 0x3] + 695) * + ((ad7280a_t_acq_ns[st->acquisition_time & 0x3] + 720) * (AD7280A_NUM_CH * ad7280a_n_avg[st->oversampling_ratio & 0x3])) - ad7280a_t_acq_ns[st->acquisition_time & 0x3] + st->slave_num * 250; |