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SubjectRe: [PATCH v3 4/5] iio: imu: st_lsm6dsx: add support for accel/gyro unit of lsm9sd1
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On 27.07.19 19:48, Jonathan Cameron wrote:
> On Thu, 25 Jul 2019 07:31:31 +0200
> Martin Kepplinger <martin.kepplinger@puri.sm> wrote:
>
>> The LSM9DS1's accelerometer / gyroscope unit and it's magnetometer (separately
>> supported in iio/magnetometer/st_magn*) are located on a separate i2c addresses
>> on the bus.
>>
>> For the datasheet, see https://www.st.com/resource/en/datasheet/lsm9ds1.pdf
>>
>> Treat it just like the LSM6* devices and, despite it's name, hook it up
>> to the st_lsm6dsx driver, using it's basic functionality.
>>
>> Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
> I'm a little confused on this hardware.
>
> How does buffered output work if these are independently clocked?
>
> I took a quick look at the datasheet, and 'suspect' the answer is that
> it runs at the gyro frequencies if both are enable. Is that right?
>

Thanks for reviewing, Jonathan,

Correct. It says so in chapter 7.12. But that's a "problem" with all
these imu devices, not specific to this addition right?

Sidenote: I thought about renaming things to "lsm6ds0" here just because
of the name and because the registers are (almost) the same as for my
lsm9ds1. But I'm not a fan of blindly doing that without being able to
test. When the current patchset looks good to you, let's keep it that way.

martin

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