swh:1:snp:173f8deb0c56c557784b4fd217e7608ac6197844
- v5.9-rc8
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- v5.5
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- v5.4-rc5
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- v5.3
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- v5.2
- v5.14-rc7
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- v5.12-rc8
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- v5.11-rc7
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- v5.11
- v5.10-rc7
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- v5.1-rc7
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- v5.1
- v5.0-rc8
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- v5.0-rc6
- v5.0-rc5
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- v5.0
- v4.9-rc8
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- v4.9
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- v4.8
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- v4.7
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- v3.2-rc2
- v3.2-rc1
- v3.2
- v3.19-rc7
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- v2.6.39
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- v2.6.37
- v2.6.36-rc8
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- v2.6.36
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- v2.6.34
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- v2.6.31-rc9
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- v2.6.31
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- v2.6.29
- v2.6.28-rc9
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- v2.6.27
- v2.6.26-rc9
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- v2.6.26
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- v2.6.24
- v2.6.23-rc9
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Tip revision: d8a5b80568a9cb66810e75b182018e9edb68e8ff authored by Linus Torvalds on 28 January 2018, 21:20:33 UTC
Linux 4.15
Linux 4.15
Tip revision: d8a5b80
powr1220
Kernel driver powr1220
==================
Supported chips:
* Lattice POWR1220AT8
Prefix: 'powr1220'
Addresses scanned: none
Datasheet: Publicly available at the Lattice website
http://www.latticesemi.com/
Author: Scott Kanowitz <scott.kanowitz@gmail.com>
Description
-----------
This driver supports the Lattice POWR1220AT8 chip. The POWR1220
includes voltage monitoring for 14 inputs as well as trim settings
for output voltages and GPIOs. This driver implements the voltage
monitoring portion of the chip.
Voltages are sampled by a 12-bit ADC with a step size of 2 mV.
An in-line attenuator allows measurements from 0 to 6 V. The
attenuator is enabled or disabled depending on the setting of the
input's max value. The driver will enable the attenuator for any
value over the low measurement range maximum of 2 V.
The input naming convention is as follows:
driver name pin name
in0 VMON1
in1 VMON2
in2 VMON3
in2 VMON4
in4 VMON5
in5 VMON6
in6 VMON7
in7 VMON8
in8 VMON9
in9 VMON10
in10 VMON11
in11 VMON12
in12 VCCA
in13 VCCINP
The ADC readings are updated on request with a minimum period of 1s.