# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/spi/fsl,espi.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Freescale eSPI (Enhanced Serial Peripheral Interface) controller
maintainers:
- J. Neuschäfer <j.ne@posteo.net>
properties:
compatible:
const: fsl,mpc8536-espi
reg:
maxItems: 1
interrupts:
maxItems: 1
fsl,espi-num-chipselects:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [ 1, 4 ]
description: The number of the chipselect signals.
fsl,csbef:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
description: Chip select assertion time in bits before frame starts
fsl,csaft:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
description: Chip select negation time in bits after frame ends
required:
- compatible
- reg
- interrupts
- fsl,espi-num-chipselects
allOf:
- $ref: spi-controller.yaml#
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
spi@110000 {
compatible = "fsl,mpc8536-espi";
reg = <0x110000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
interrupts = <53 IRQ_TYPE_EDGE_FALLING>;
fsl,espi-num-chipselects = <4>;
fsl,csbef = <1>;
fsl,csaft = <1>;
};
...
