i2c-gate.txt

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 An i2c gate is useful to e.g. reduce the digital noise for RF tuners connected
    2 to the i2c bus. Gates are similar to arbitrators in that you need to perform
    3 some kind of operation to access the i2c bus past the arbitrator/gate, but
    4 there are no competing masters to consider for gates and therefore there is
    5 no arbitration happening for gates.
    6 
    7 Common i2c gate properties.
    8 
    9 - i2c-gate child node
   10 
   11 Required properties for the i2c-gate child node:
   12 - #address-cells = <1>;
   13 - #size-cells = <0>;
   14 
   15 Optional properties for i2c-gate child node:
   16 - Child nodes conforming to i2c bus binding
   17 
   18 
   19 Example :
   20 
   21         /*
   22            An Invensense mpu9150 at address 0x68 featuring an on-chip Asahi
   23            Kasei ak8975 compass behind a gate.
   24          */
   25 
   26         mpu9150@68 {
   27                 compatible = "invensense,mpu9150";
   28                 reg = <0x68>;
   29                 interrupt-parent = <&gpio1>;
   30                 interrupts = <18 1>;
   31 
   32                 i2c-gate {
   33                         #address-cells = <1>;
   34                         #size-cells = <0>;
   35 
   36                         ax8975@c {
   37                                 compatible = "ak,ak8975";
   38                                 reg = <0x0c>;
   39                         };
   40                 };
   41         };

Cache object: 4243958ac36f27562e0299bd0c27eec3

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/i2c/i2c-gate.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/i2c/i2c-gate.txt