zephyr/dts/bindings/pinctrl/nuvoton,npcx-lvolctrl-conf....

# Copyright (c) 2020 Nuvoton Technology Corporation.
# SPDX-License-Identifier: Apache-2.0

description: Nuvoton NPCX7 Low-Voltage level detection configuration map
    between Nuvoton NPCX GPIO and low-voltage controller (LV_GPIO_CTL) driver instances.

compatible: "nuvoton,npcx-lvolctrl-conf"

child-binding:
    description: Child node to present the mapping between GPIO pad and its low-voltage support
    properties:
       lvols:
          type: phandle-array
          required: true
          description: list of configurations map between io and low-voltage controllers
driver: gpio: add 1p8v level detection support in npcx series. Part of GPIO pads in npcx series support low-voltage (1.8V) level detection. In order to introduce this feature, this CL adds a new NPCX-specific controller property, lvol_io_pads, in devicetree file. For example, here is devicetree fragment which turn on low-voltage support of i2c1_0 port. / { def_lvol_io_list { compatible = "nuvoton,npcx-lvolctrl-def"; lvol_io_pads = <&lvol_io90 /* I2C1_SCL0 1.8V support / &lvol_io87>; / I2C1_SDA0 1,8V support */ }; }; Then these pads will turn on 1.8V level detection during initialization. Signed-off-by: Mulin Chao <mlchao@nuvoton.com> 2020-12-24 16:44:26 +08:00			`# Copyright (c) 2020 Nuvoton Technology Corporation.`
			`# SPDX-License-Identifier: Apache-2.0`

			`description: Nuvoton NPCX7 Low-Voltage level detection configuration map`
			`between Nuvoton NPCX GPIO and low-voltage controller (LV_GPIO_CTL) driver instances.`

			`compatible: "nuvoton,npcx-lvolctrl-conf"`

			`child-binding:`
			`description: Child node to present the mapping between GPIO pad and its low-voltage support`
			`properties:`
			`lvols:`
			`type: phandle-array`
			`required: true`
			`description: list of configurations map between io and low-voltage controllers`