Merge tag 'devicetree-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh...
[sfrench/cifs-2.6.git] / Documentation / devicetree / bindings / rtc / abracon,abx80x.txt
1 Abracon ABX80X I2C ultra low power RTC/Alarm chip
2
3 The Abracon ABX80X family consist of the ab0801, ab0803, ab0804, ab0805, ab1801,
4 ab1803, ab1804 and ab1805. The ab0805 is the superset of ab080x and the ab1805
5 is the superset of ab180x.
6
7 Required properties:
8
9  - "compatible": should one of:
10         "abracon,abx80x"
11         "abracon,ab0801"
12         "abracon,ab0803"
13         "abracon,ab0804"
14         "abracon,ab0805"
15         "abracon,ab1801"
16         "abracon,ab1803"
17         "abracon,ab1804"
18         "abracon,ab1805"
19         "microcrystal,rv1805"
20         Using "abracon,abx80x" will enable chip autodetection.
21  - "reg": I2C bus address of the device
22
23 Optional properties:
24
25 The abx804 and abx805 have a trickle charger that is able to charge the
26 connected battery or supercap. Both the following properties have to be defined
27 and valid to enable charging:
28
29  - "abracon,tc-diode": should be "standard" (0.6V) or "schottky" (0.3V)
30  - "abracon,tc-resistor": should be <0>, <3>, <6> or <11>. 0 disables the output
31                           resistor, the other values are in kOhm.