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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mmc/mmc-spi-slot.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MMC/SD/SDIO slot directly connected to a SPI bus
maintainers:
- Ulf Hansson <ulf.hansson@linaro.org>
allOf:
- $ref: "mmc-controller.yaml"
- $ref: /schemas/spi/spi-peripheral-props.yaml
description: |
The extra properties used by an mmc connected via SPI.
properties:
compatible:
const: mmc-spi-slot
reg:
maxItems: 1
spi-max-frequency: true
interrupts:
maxItems: 1
voltage-ranges:
$ref: /schemas/types.yaml#/definitions/uint32-array
description: |
Two cells are required, first cell specifies minimum slot voltage (mV),
second cell specifies maximum slot voltage (mV).
items:
- description: |
value for minimum slot voltage in mV
default: 3200
- description: |
value for maximum slot voltage in mV
default: 3400
gpios:
description: |
For historical reasons, this does not follow the generic mmc-controller
binding.
minItems: 1
items:
- description: Card-Detect GPIO
- description: Write-Protect GPIO
required:
- compatible
- reg
- spi-max-frequency
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
mmc@0 {
compatible = "mmc-spi-slot";
reg = <0>;
gpios = <&gpio 14 GPIO_ACTIVE_LOW>, <&gpio 15 GPIO_ACTIVE_HIGH>;
voltage-ranges = <3300 3300>;
spi-max-frequency = <50000000>;
interrupts = <42>;
interrupt-parent = <&PIC>;
};
};
...
|
