| /* |
| * Character HD44780 module driven by the PCF8574 gpio. |
| */ |
| |
| &i2c0 { |
| aux_display_gpio: pcf8574@27 { |
| compatible = "nxp,pcf857x"; |
| reg = <0x27>; |
| gpio-controller; |
| ngpios = <8>; |
| #gpio-cells = <2>; |
| }; |
| }; |
| |
| / { |
| auxdisplay_0: hd44780 { |
| compatible = "hit,hd44780"; |
| columns = <16>; |
| rows = <2>; |
| mode = <4>; |
| boot-delay-ms = <100>; |
| enable-line-rise-delay-us = <1000>; |
| enable-line-fall-delay-us = <500>; |
| register-select-gpios = <&aux_display_gpio 0 (GPIO_ACTIVE_HIGH)>; |
| read-write-gpios = <&aux_display_gpio 1 (GPIO_ACTIVE_HIGH)>; |
| enable-gpios = <&aux_display_gpio 2 (GPIO_ACTIVE_HIGH)>; |
| backlight-gpios = <&aux_display_gpio 3 (GPIO_ACTIVE_HIGH)>; |
| data-bus-gpios = <0>, <0>, <0>, <0>, |
| <&aux_display_gpio 4 (GPIO_ACTIVE_HIGH)>, |
| <&aux_display_gpio 5 (GPIO_ACTIVE_HIGH)>, |
| <&aux_display_gpio 6 (GPIO_ACTIVE_HIGH)>, |
| <&aux_display_gpio 7 (GPIO_ACTIVE_HIGH)>; |
| }; |
| }; |
