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Diffstat (limited to 'Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml b/Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml new file mode 100644 index 0000000000..36acc40c7d --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml @@ -0,0 +1,75 @@ +# 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>; + }; + }; + +... |