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