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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/intel,pinctrl-keembay.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Intel Keem Bay pin controller Device Tree Bindings
maintainers:
- Lakshmi Sowjanya D <lakshmi.sowjanya.d@intel.com>
description: |
Intel Keem Bay SoC integrates a pin controller which enables control
of pin directions, input/output values and configuration
for a total of 80 pins.
properties:
compatible:
const: intel,keembay-pinctrl
reg:
maxItems: 2
gpio-controller: true
'#gpio-cells':
const: 2
ngpios:
description: The number of GPIOs exposed.
const: 80
interrupts:
description:
Specifies the interrupt lines to be used by the controller.
Each interrupt line is shared by upto 4 GPIO lines.
maxItems: 8
interrupt-controller: true
'#interrupt-cells':
const: 2
patternProperties:
'^gpio@[0-9a-f]*$':
type: object
description:
Child nodes can be specified to contain pin configuration information,
which can then be utilized by pinctrl client devices.
The following properties are supported.
properties:
pins:
description: |
The name(s) of the pins to be configured in the child node.
Supported pin names are "GPIO0" up to "GPIO79".
bias-disable: true
bias-pull-down: true
bias-pull-up: true
drive-strength:
description: IO pads drive strength in milli Ampere.
enum: [2, 4, 8, 12]
bias-bus-hold:
type: boolean
input-schmitt-enable:
type: boolean
slew-rate:
description: GPIO slew rate control.
0 - Fast(~100MHz)
1 - Slow(~50MHz)
enum: [0, 1]
additionalProperties: false
required:
- compatible
- reg
- gpio-controller
- ngpios
- '#gpio-cells'
- interrupts
- interrupt-controller
- '#interrupt-cells'
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
// Example 1
gpio@0 {
compatible = "intel,keembay-pinctrl";
reg = <0x600b0000 0x88>,
<0x600b0190 0x1ac>;
gpio-controller;
ngpios = <0x50>;
#gpio-cells = <0x2>;
interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
interrupt-controller;
#interrupt-cells = <2>;
};
// Example 2
gpio@1 {
compatible = "intel,keembay-pinctrl";
reg = <0x600c0000 0x88>,
<0x600c0190 0x1ac>;
gpio-controller;
ngpios = <0x50>;
#gpio-cells = <0x2>;
interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
interrupt-controller;
#interrupt-cells = <2>;
};
|
