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// Definitions for MCP23017 Gpio Extender from Microchip Semiconductor
/dts-v1/;
/plugin/;
/ {
compatible = "brcm,bcm2835";
fragment@0 {
target = <&i2c1>;
__overlay__ {
status = "okay";
};
};
fragment@1 {
target = <&gpio>;
__overlay__ {
mcp23017_pins: mcp23017_pins@20 {
brcm,pins = <4>;
brcm,function = <0>;
};
};
};
fragment@2 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
#size-cells = <0>;
mcp23017: mcp@20 {
compatible = "microchip,mcp23017";
reg = <0x20>;
gpio-controller;
#gpio-cells = <2>;
status = "okay";
};
};
};
fragment@3 {
target = <&mcp23017>;
__dormant__ {
compatible = "microchip,mcp23008";
};
};
fragment@4 {
target = <&mcp23017>;
mcp23017_irq: __overlay__ {
#interrupt-cells=<2>;
interrupt-parent = <&gpio>;
interrupts = <4 2>;
interrupt-controller;
microchip,irq-mirror;
};
};
__overrides__ {
gpiopin = <&mcp23017_pins>,"brcm,pins:0",
<&mcp23017_irq>,"interrupts:0";
addr = <&mcp23017>,"reg:0", <&mcp23017_pins>,"reg:0";
mcp23008 = <0>,"=3";
noints = <0>,"!1!4";
};
};
|
