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Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-iio-sx9324')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-iio-sx9324 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-sx9324 b/Documentation/ABI/testing/sysfs-bus-iio-sx9324 new file mode 100644 index 000000000..a8342770e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-sx9324 @@ -0,0 +1,29 @@ +What: /sys/bus/iio/devices/iio:deviceX/in_proximity<id>_setup +Date: November 2021 +KernelVersion: 5.17 +Contact: Gwendal Grignou <gwendal@chromium.org> +Description: + SX9324 has 3 inputs, CS0, CS1 and CS2. Hardware layout + defines if the input is + + + not connected (HZ), + + grounded (GD), + + connected to an antenna where it can act as a base + (DS - data shield), or measured input (MI). + + The sensor rotates measurement across 4 phases + (PH0, PH1, PH2, PH3), where the inputs are configured + and then measured. + + By default, during the first phase, [PH0], CS0 is measured, + while CS1 and CS2 are used as shields. + `cat in_proximity0_setup` returns "MI,DS,DS". + [PH1], CS1 is measured, CS0 and CS2 are shield: + `cat in_proximity1_setup` returns "DS,MI,DS". + [PH2], CS2 is measured, CS0 and CS1 are shield: + `cat in_proximity1_setup` returns "DS,DS,MI". + [PH3], CS1 and CS2 are measured (combo mode): + `cat in_proximity1_setup` returns "DS,MI,MI". + + Note, these are the chip default. Hardware layout will most + likely dictate different output. The entry is read-only. |