AuxXxilium/linux_dsm_epyc7002
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fda29dbac9
linux_dsm_epyc7002/drivers/iio
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Martin Blumenstingl fda29dbac9 iio: adc: meson-saradc: fix the clock frequency on Meson8 and Meson8b 
GX SoCs use a 1.2 MHz ADC clock, while the older SoCs use a 1.14 MHz
clock.

A comment in the driver from Amlogic's GPL kernel says that it's
running at 1.28 MHz. However, it's actually programming a divider of
20 + 1. With a XTAL clock of 24 MHz this results in a frequency of
1.14 MHz. (their calculation might be based on a 27 MHz XTAL clock,
but this is not what we have on the Meson8 and Meson8b SoCs).

The ADC was still working with the 1.2MHz clock. In my own tests I did
not see a difference between 1.2 and 1.14 MHz (regardless of the clock
frequency used, the ADC results were identical).

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-08 16:03:42 +01:00
..
accel iio: mma8452: replace license description with SPDX specifier 2018-01-08 16:03:41 +01:00
adc iio: adc: meson-saradc: fix the clock frequency on Meson8 and Meson8b 2018-01-08 16:03:42 +01:00
amplifiers iio:amplifiers:ad8366 drop assign iio_info.driver_module and iio_trigger_ops.owner 2017-08-22 21:24:50 +01:00
buffer License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
chemical iio: chemical: ccs811: Add support for data ready trigger 2017-09-24 12:34:36 +01:00
common iio: common: ssp_sensors: use ktime_get_real_ns() timestamps 2018-01-08 16:03:41 +01:00
counter iio: stm32: Adopt SPDX identifier 2018-01-08 16:03:41 +01:00
dac iio: dac: mcp4725: Remove unneeded conversions to bool 2018-01-08 16:03:41 +01:00
dummy iio: dummy_evgen: modify the return value check for irq_sim_init() 2018-01-08 16:03:41 +01:00
frequency iio:frequency: drop assign iio_info.driver_module 2017-08-22 21:28:20 +01:00
gyro drivers: iio: gyro: remove duplicate includes 2018-01-08 16:03:42 +01:00
health Merge Linus's staging merge point into staging-next 2017-12-06 15:27:17 +01:00
humidity Staging/IIO patches for 4.15-rc1 2017-11-13 20:53:28 -08:00
imu iio: imu: inv_mpu6050: Remove duplicate NULL check 2017-12-02 10:40:11 +00:00
light iio: light: make a couple of config structures static 2018-01-08 16:03:41 +01:00
magnetometer iio: magnetometer: ak8975: Add another ACPI ID 2017-12-02 10:40:02 +00:00
multiplexer iio: multiplexer: add NULL check on devm_kzalloc() and devm_kmemdup() return values 2017-09-03 18:10:29 +01:00
orientation iio:orientation: drop assign iio_info.driver_module 2017-08-22 21:33:36 +01:00
potentiometer Staging/IIO patches for 4.15-rc1 2017-11-13 20:53:28 -08:00
potentiostat iio:potentiostat:lmp91000 drop assign iio_info.driver_module and iio_trigger_ops.owner 2017-08-22 21:34:48 +01:00
pressure Staging/IIO patches for 4.15-rc1 2017-11-13 20:53:28 -08:00
proximity Merge Linus's staging merge point into staging-next 2017-12-06 15:27:17 +01:00
temperature Staging/IIO patches for 4.15-rc1 2017-11-13 20:53:28 -08:00
trigger iio: stm32: Adopt SPDX identifier 2018-01-08 16:03:41 +01:00
iio_core_trigger.h
iio_core.h iio:core: timestamping clock selection support 2016-06-30 19:41:38 +01:00
industrialio-buffer.c iio: buffer: Expose data available 2018-01-08 16:03:41 +01:00
industrialio-configfs.c iio: make function argument and some structures const 2017-10-19 16:15:24 +02:00
industrialio-core.c Merge Linus's staging merge point into staging-next 2017-12-06 15:27:17 +01:00
industrialio-event.c iio: iio_push_event(): Don't crash if the event interface is not registered 2016-09-10 16:40:44 +01:00
industrialio-sw-device.c iio: make function argument and some structures const 2017-10-19 16:15:24 +02:00
industrialio-sw-trigger.c iio: make function argument and some structures const 2017-10-19 16:15:24 +02:00
industrialio-trigger.c iio:trigger: Remove necessity to have a trig->ops structure. 2017-08-22 21:20:28 +01:00
industrialio-triggered-event.c iio: Support triggered events 2015-08-27 20:47:09 +01:00
inkern.c First round of IIO new device support, features and cleanups for the 4.14 cycle. 2017-07-27 21:29:49 -07:00
Kconfig iio: multiplexer: new iio category and iio-mux driver 2017-06-03 19:29:26 +09:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00