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     1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/rtc/trivial-rtc.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Trivial RTCs
    8 
    9 maintainers:
   10   - Alexandre Belloni <alexandre.belloni@bootlin.com>
   11 
   12 description: |
   13   This is a list of trivial RTC devices that have simple device tree
   14   bindings, consisting only of a compatible field, an address and
   15   possibly an interrupt line.
   16 
   17 allOf:
   18   - $ref: "rtc.yaml#"
   19 
   20 properties:
   21   compatible:
   22     enum:
   23       # AB-RTCMC-32.768kHz-B5ZE-S3: Real Time Clock/Calendar Module with I2C Interface
   24       - abracon,abb5zes3
   25       # AB-RTCMC-32.768kHz-EOZ9: Real Time Clock/Calendar Module with I2C Interface
   26       - abracon,abeoz9
   27       # I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
   28       - dallas,ds1374
   29       # Dallas DS1672 Real-time Clock
   30       - dallas,ds1672
   31       # Extremely Accurate I²C RTC with Integrated Crystal and SRAM
   32       - dallas,ds3232
   33       # EM Microelectronic EM3027 RTC
   34       - emmicro,em3027
   35       # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
   36       - epson,rx8010
   37       # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
   38       - epson,rx8025
   39       - epson,rx8035
   40       # I2C-BUS INTERFACE REAL TIME CLOCK MODULE with Battery Backed RAM
   41       - epson,rx8571
   42       # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
   43       - epson,rx8581
   44       # Intersil ISL1208 Low Power RTC with Battery Backed SRAM
   45       - isil,isl1208
   46       # Intersil ISL1218 Low Power RTC with Battery Backed SRAM
   47       - isil,isl1218
   48       # Intersil ISL12022 Real-time Clock
   49       - isil,isl12022
   50       # Real Time Clock Module with I2C-Bus
   51       - microcrystal,rv3028
   52       # Real Time Clock Module with I2C-Bus
   53       - microcrystal,rv3029
   54       # Real Time Clock
   55       - microcrystal,rv8523
   56       - nxp,pca2129
   57       - nxp,pcf2129
   58       # Real-time Clock Module
   59       - pericom,pt7c4338
   60       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
   61       - ricoh,r2025sd
   62       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
   63       - ricoh,r2221tl
   64       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
   65       - ricoh,rs5c372a
   66       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
   67       - ricoh,rs5c372b
   68       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
   69       - ricoh,rv5c386
   70       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
   71       - ricoh,rv5c387a
   72       # 2-wire CMOS real-time clock
   73       - sii,s35390a
   74       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
   75       - whwave,sd3078
   76       # Xircom X1205 I2C RTC
   77       - xircom,x1205
   78 
   79   reg:
   80     maxItems: 1
   81 
   82   interrupts:
   83     maxItems: 1
   84 
   85   start-year: true
   86 
   87 required:
   88   - compatible
   89   - reg
   90 
   91 additionalProperties: false
   92 
   93 ...
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