0001 Turris Mox module status and configuration bus (over SPI)
0002
0003 Required properties:
0004 - compatible : Should be "cznic,moxtet"
0005 - #address-cells : Has to be 1
0006 - #size-cells : Has to be 0
0007 - spi-cpol : Required inverted clock polarity
0008 - spi-cpha : Required shifted clock phase
0009 - interrupts : Must contain reference to the shared interrupt line
0010 - interrupt-controller : Required
0011 - #interrupt-cells : Has to be 1
0012
0013 For other required and optional properties of SPI slave nodes please refer to
0014 ../spi/spi-bus.txt.
0015
0016 Required properties of subnodes:
0017 - reg : Should be position on the Moxtet bus (how many Moxtet
0018 modules are between this module and CPU module, so
0019 either 0 or a positive integer)
0020
0021 The driver finds the devices connected to the bus by itself, but it may be
0022 needed to reference some of them from other parts of the device tree. In that
0023 case the devices can be defined as subnodes of the moxtet node.
0024
0025 Example:
0026
0027 moxtet@1 {
0028 compatible = "cznic,moxtet";
0029 #address-cells = <1>;
0030 #size-cells = <0>;
0031 reg = <1>;
0032 spi-max-frequency = <10000000>;
0033 spi-cpol;
0034 spi-cpha;
0035 interrupt-controller;
0036 #interrupt-cells = <1>;
0037 interrupt-parent = <&gpiosb>;
0038 interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
0039
0040 moxtet_sfp: gpio@0 {
0041 compatible = "cznic,moxtet-gpio";
0042 gpio-controller;
0043 #gpio-cells = <2>;
0044 reg = <0>;
0045 }
0046 };
