The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/rtc/epson,rx6110.txt

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    1 Epson RX6110 Real Time Clock
    2 ============================
    3 
    4 The Epson RX6110 can be used with SPI or I2C busses. The kind of
    5 bus depends on the SPISEL pin and can not be configured via software.
    6 
    7 I2C mode
    8 --------
    9 
   10 Required properties:
   11   - compatible: should be: "epson,rx6110"
   12   - reg : the I2C address of the device for I2C
   13 
   14 Example:
   15 
   16         rtc: rtc@32 {
   17                 compatible = "epson,rx6110"
   18                 reg = <0x32>;
   19         };
   20 
   21 SPI mode
   22 --------
   23 
   24 Required properties:
   25   - compatible: should be: "epson,rx6110"
   26   - reg: chip select number
   27   - spi-cs-high: RX6110 needs chipselect high
   28   - spi-cpha: RX6110 works with SPI shifted clock phase
   29   - spi-cpol: RX6110 works with SPI inverse clock polarity
   30 
   31 Example:
   32 
   33         rtc: rtc@3 {
   34                 compatible = "epson,rx6110"
   35                 reg = <3>
   36                 spi-cs-high;
   37                 spi-cpha;
   38                 spi-cpol;
   39         };

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