| # 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 |
| |
| 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>; |
| }; |
| }; |
| |
| ... |
