| 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. |
