1 What: /sys/bus/iio/devices/iio:devic 1 What: /sys/bus/iio/devices/iio:deviceX/in_proximity<id>_setup
2 Date: November 2021 2 Date: November 2021
3 KernelVersion: 5.17 3 KernelVersion: 5.17
4 Contact: Gwendal Grignou <gwendal@chromi 4 Contact: Gwendal Grignou <gwendal@chromium.org>
5 Description: 5 Description:
6 SX9324 has 3 inputs, CS0, CS1 6 SX9324 has 3 inputs, CS0, CS1 and CS2. Hardware layout
7 defines if the input is 7 defines if the input is
8 <<
9 + not connected (HZ), 8 + not connected (HZ),
10 + grounded (GD), 9 + grounded (GD),
11 + connected to an antenna wher 10 + connected to an antenna where it can act as a base
12 (DS - data shield), or measu 11 (DS - data shield), or measured input (MI).
13 12
14 The sensor rotates measurement 13 The sensor rotates measurement across 4 phases
15 (PH0, PH1, PH2, PH3), where th 14 (PH0, PH1, PH2, PH3), where the inputs are configured
16 and then measured. 15 and then measured.
17 16
18 By default, during the first 17 By default, during the first phase, [PH0], CS0 is measured,
19 while CS1 and CS2 are used as 18 while CS1 and CS2 are used as shields.
20 `cat in_proximity0_setup` retu 19 `cat in_proximity0_setup` returns "MI,DS,DS".
21 [PH1], CS1 is measured, CS0 an 20 [PH1], CS1 is measured, CS0 and CS2 are shield:
22 `cat in_proximity1_setup` retu 21 `cat in_proximity1_setup` returns "DS,MI,DS".
23 [PH2], CS2 is measured, CS0 an 22 [PH2], CS2 is measured, CS0 and CS1 are shield:
24 `cat in_proximity1_setup` retu 23 `cat in_proximity1_setup` returns "DS,DS,MI".
25 [PH3], CS1 and CS2 are measure 24 [PH3], CS1 and CS2 are measured (combo mode):
26 `cat in_proximity1_setup` retu 25 `cat in_proximity1_setup` returns "DS,MI,MI".
27 26
28 Note, these are the chip defau 27 Note, these are the chip default. Hardware layout will most
29 likely dictate different outpu 28 likely dictate different output. The entry is read-only.
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