# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/spi/fsl,spi.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Freescale SPI (Serial Peripheral Interface) controller
maintainers:
- J. Neuschäfer <j.ne@posteo.net>
properties:
compatible:
enum:
- fsl,spi
- aeroflexgaisler,spictrl
reg:
maxItems: 1
cell-index:
$ref: /schemas/types.yaml#/definitions/uint32
description: |
QE SPI subblock index.
0: QE subblock SPI1
1: QE subblock SPI2
mode:
description: SPI operation mode
enum:
- cpu
- cpu-qe
interrupts:
maxItems: 1
clock-frequency:
description: input clock frequency to non FSL_SOC cores
cs-gpios: true
fsl,spisel_boot:
$ref: /schemas/types.yaml#/definitions/flag
description:
For the MPC8306 and MPC8309, specifies that the SPISEL_BOOT signal is used
as chip select for a slave device. Use reg = <number of gpios> in the
corresponding child node, i.e. 0 if the cs-gpios property is not present.
required:
- compatible
- reg
- mode
- interrupts
allOf:
- $ref: spi-controller.yaml#
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
spi@4c0 {
compatible = "fsl,spi";
reg = <0x4c0 0x40>;
cell-index = <0>;
interrupts = <82 0>;
mode = "cpu";
cs-gpios = <&gpio 18 IRQ_TYPE_EDGE_RISING // device reg=<0>
&gpio 19 IRQ_TYPE_EDGE_RISING>; // device reg=<1>
};
...
