1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/gpio/lacie,netxbig-gpio-ext.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: NetxBig GPIO extension bus 8 9maintainers: 10 - Simon Guinot <simon.guinot@sequanux.org> 11 12description: > 13 GPIO extension bus found on some LaCie/Seagate boards 14 (Example: 2Big/5Big Network v2, 2Big NAS). 15 16properties: 17 compatible: 18 items: 19 - const: lacie,netxbig-gpio-ext 20 21 addr-gpios: 22 description: GPIOs representing the address register (LSB->MSB). 23 items: 24 - description: bit 0 (LSB) 25 - description: bit 1 26 - description: bit 2 (MSB) 27 28 data-gpios: 29 description: GPIOs representing the data register (LSB->MSB). 30 items: 31 - description: bit 0 (LSB) 32 - description: bit 1 33 - description: bit 2 (MSB) 34 35 enable-gpio: 36 description: Latches the new configuration (address, data) on raising edge. 37 maxItems: 1 38 39required: 40 - compatible 41 - addr-gpios 42 - data-gpios 43 - enable-gpio 44 45additionalProperties: false 46 47examples: 48 - | 49 #include <dt-bindings/gpio/gpio.h> 50 51 gpio { 52 compatible = "lacie,netxbig-gpio-ext"; 53 addr-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH 54 &gpio1 16 GPIO_ACTIVE_HIGH 55 &gpio1 17 GPIO_ACTIVE_HIGH>; 56 data-gpios = <&gpio1 12 GPIO_ACTIVE_HIGH 57 &gpio1 13 GPIO_ACTIVE_HIGH 58 &gpio1 14 GPIO_ACTIVE_HIGH>; 59 enable-gpio = <&gpio0 29 GPIO_ACTIVE_HIGH>; 60 }; 61