diff options
| -rw-r--r-- | mtcpmhs/gpio-expander-0.1.dtso | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/mtcpmhs/gpio-expander-0.1.dtso b/mtcpmhs/gpio-expander-0.1.dtso new file mode 100644 index 0000000..96b5fef --- /dev/null +++ b/mtcpmhs/gpio-expander-0.1.dtso @@ -0,0 +1,60 @@ +/* + * DTS overlay for MTCPM 0.1 hardware version. + */ + +/dts-v1/; +/plugin/; + +/* + * Location(s): + * Put: MTCPM/0.0/gpio-expander.dtbo + */ + +#include "am4372.dtsi" +#include <dt-bindings/pinctrl/am43xx.h> +#include <dt-bindings/pwm/pwm.h> +#include <dt-bindings/gpio/gpio.h> + + +/ { + compatible = "ti,am437x-gp-evm", "ti,am4372", "ti,am43"; + fragment@0 { + target-path = "/ocp@44000000/interconnect@48000000/segment@0/target-module@2a000/i2c@0"; + __overlay__ { + gpiom1: gpio@20 { + compatible = "microchip,mcp23008"; + gpio-controller; + #gpio-cells = <2>; + reg = <0x20>; + interrupt-parent = <&gpio1>; + interrupts = <4 IRQ_TYPE_LEVEL_LOW>; + interrupt-controller; + #interrupt-cells=<2>; + }; /*gpio@20*/ + gpiom2: gpio@21 { + compatible = "microchip,mcp23008"; + gpio-controller; + #gpio-cells = <2>; + reg = <0x21>; + interrupt-parent = <&gpio1>; + interrupts = <7 IRQ_TYPE_LEVEL_LOW>; + interrupt-controller; + #interrupt-cells=<2>; + gpio-line-names = "", "", "modesel_0", "modesel_1", "termination_en", "RTS_override", "gpio_exp_led", ""; + }; /*gpio@20*/ + }; /*overlay*/ + }; /*fragment@0*/ + + fragement@1 { + target-path = "/"; + __overlay__ { + leds-exp { + compatible = "gpio-leds"; + led-gpio { + gpios = <&gpiom2 6 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; /*led-gpio*/ + }; /*leds-exp*/ + }; /*overlay*/ + }; /*fragement@1*/ +}; |