1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/mmc/mmc-spi-slot.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: MMC/SD/SDIO slot directly connected to a SPI bus 8 9maintainers: 10 - Ulf Hansson <ulf.hansson@linaro.org> 11 12allOf: 13 - $ref: "mmc-controller.yaml" 14 - $ref: /schemas/spi/spi-peripheral-props.yaml 15 16description: | 17 The extra properties used by an mmc connected via SPI. 18 19properties: 20 compatible: 21 const: mmc-spi-slot 22 23 reg: 24 maxItems: 1 25 26 spi-max-frequency: true 27 28 interrupts: 29 maxItems: 1 30 31 voltage-ranges: 32 $ref: /schemas/types.yaml#/definitions/uint32-array 33 description: | 34 Two cells are required, first cell specifies minimum slot voltage (mV), 35 second cell specifies maximum slot voltage (mV). 36 items: 37 - description: | 38 value for minimum slot voltage in mV 39 default: 3200 40 - description: | 41 value for maximum slot voltage in mV 42 default: 3400 43 44 gpios: 45 description: | 46 For historical reasons, this does not follow the generic mmc-controller 47 binding. 48 minItems: 1 49 items: 50 - description: Card-Detect GPIO 51 - description: Write-Protect GPIO 52 53required: 54 - compatible 55 - reg 56 - spi-max-frequency 57 58unevaluatedProperties: false 59 60examples: 61 - | 62 #include <dt-bindings/gpio/gpio.h> 63 spi { 64 #address-cells = <1>; 65 #size-cells = <0>; 66 mmc@0 { 67 compatible = "mmc-spi-slot"; 68 reg = <0>; 69 gpios = <&gpio 14 GPIO_ACTIVE_LOW>, <&gpio 15 GPIO_ACTIVE_HIGH>; 70 voltage-ranges = <3300 3300>; 71 spi-max-frequency = <50000000>; 72 interrupts = <42>; 73 interrupt-parent = <&PIC>; 74 }; 75 }; 76 77... 78