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dt-bindings: gpio: omap: Convert to json-schema
Convert the OMAP GPIO Device Tree binding documentation to json-schema. The GPIO hogs node names defined to end with a 'hog' suffix. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Grygorii Strashko
committed by
Bartosz Golaszewski
Bartosz Golaszewski
parent
0533260687
commit
bc3aca5393
@@ -1,45 +0,0 @@
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OMAP GPIO controller bindings
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Required properties:
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- compatible:
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- "ti,omap2-gpio" for OMAP2 controllers
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- "ti,omap3-gpio" for OMAP3 controllers
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- "ti,omap4-gpio" for OMAP4 controllers
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- reg : Physical base address of the controller and length of memory mapped
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region.
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- gpio-controller : Marks the device node as a GPIO controller.
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- #gpio-cells : Should be two.
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- first cell is the pin number
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- second cell is used to specify optional parameters (unused)
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- interrupt-controller: Mark the device node as an interrupt controller.
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- #interrupt-cells : Should be 2.
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The first cell is the GPIO number.
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The second cell is used to specify flags:
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bits[3:0] trigger type and level flags:
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1 = low-to-high edge triggered.
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2 = high-to-low edge triggered.
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4 = active high level-sensitive.
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8 = active low level-sensitive.
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- interrupts : The interrupt the controller is rising as output when an
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interrupt occures
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OMAP specific properties:
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- ti,hwmods: Name of the hwmod associated to the GPIO:
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"gpio<X>", <X> being the 1-based instance number
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from the HW spec.
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- ti,gpio-always-on: Indicates if a GPIO bank is always powered and
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so will never lose its logic state.
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Example:
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gpio0: gpio@44e07000 {
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compatible = "ti,omap4-gpio";
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reg = <0x44e07000 0x1000>;
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ti,hwmods = "gpio1";
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gpio-controller;
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#gpio-cells = <2>;
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interrupt-controller;
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#interrupt-cells = <2>;
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interrupts = <96>;
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};
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108
Documentation/devicetree/bindings/gpio/ti,omap-gpio.yaml
Normal file
108
Documentation/devicetree/bindings/gpio/ti,omap-gpio.yaml
Normal file
@@ -0,0 +1,108 @@
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/gpio/ti,omap-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: OMAP GPIO controller bindings
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maintainers:
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- Grygorii Strashko <grygorii.strashko@ti.com>
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description: |
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The general-purpose interface combines general-purpose input/output (GPIO) banks.
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Each GPIO banks provides up to 32 dedicated general-purpose pins with input
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and output capabilities; interrupt generation in active mode and wake-up
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request generation in idle mode upon the detection of external events.
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properties:
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compatible:
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oneOf:
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- enum:
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- ti,omap2-gpio
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- ti,omap3-gpio
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- ti,omap4-gpio
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- items:
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- const: ti,am4372-gpio
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- const: ti,omap4-gpio
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reg:
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maxItems: 1
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gpio-controller: true
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'#gpio-cells':
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const: 2
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interrupt-controller: true
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'#interrupt-cells':
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const: 2
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interrupts:
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maxItems: 1
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gpio-ranges: true
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gpio-line-names:
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minItems: 1
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maxItems: 32
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ti,gpio-always-on:
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$ref: /schemas/types.yaml#/definitions/flag
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description:
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Indicates if a GPIO bank is always powered and will never lose its logic state.
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ti,hwmods:
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$ref: /schemas/types.yaml#/definitions/string
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deprecated: true
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description:
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Name of the hwmod associated with the GPIO. Needed on some legacy OMAP
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SoCs which have not been converted to the ti,sysc interconnect hierarachy.
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ti,no-reset-on-init:
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$ref: /schemas/types.yaml#/definitions/flag
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deprecated: true
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description:
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Do not reset on init. Used with ti,hwmods on some legacy OMAP SoCs which
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have not been converted to the ti,sysc interconnect hierarachy.
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patternProperties:
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"^(.+-hog(-[0-9]+)?)$":
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type: object
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required:
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- gpio-hog
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required:
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- compatible
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- reg
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- gpio-controller
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- "#gpio-cells"
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- interrupt-controller
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- "#interrupt-cells"
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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gpio0: gpio@0 {
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compatible = "ti,omap4-gpio";
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reg = <0x0 0x1000>;
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gpio-controller;
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#gpio-cells = <2>;
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interrupt-controller;
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#interrupt-cells = <2>;
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interrupts = <96>;
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ti,gpio-always-on;
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ls-buf-en-hog {
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gpio-hog;
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gpios = <10 GPIO_ACTIVE_HIGH>;
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output-high;
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line-name = "LS_BUF_EN";
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};
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};
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