| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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 | |
| 7 | title: MMC/SD/SDIO slot directly connected to a SPI bus |
| 8 | |
| 9 | maintainers: |
| 10 | - Ulf Hansson <ulf.hansson@linaro.org> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: mmc-controller.yaml |
| 14 | - $ref: /schemas/spi/spi-peripheral-props.yaml |
| 15 | |
| 16 | description: | |
| 17 | The extra properties used by an mmc connected via SPI. |
| 18 | |
| 19 | properties: |
| 20 | compatible: |
| 21 | const: mmc-spi-slot |
| 22 | |
| 23 | reg: |
| 24 | maxItems: 1 |
| 25 | |
| 26 | interrupts: |
| 27 | maxItems: 1 |
| 28 | |
| 29 | voltage-ranges: |
| 30 | $ref: /schemas/types.yaml#/definitions/uint32-array |
| 31 | description: | |
| 32 | Two cells are required, first cell specifies minimum slot voltage (mV), |
| 33 | second cell specifies maximum slot voltage (mV). |
| 34 | items: |
| 35 | - description: | |
| 36 | value for minimum slot voltage in mV |
| 37 | default: 3200 |
| 38 | - description: | |
| 39 | value for maximum slot voltage in mV |
| 40 | default: 3400 |
| 41 | |
| 42 | gpios: |
| 43 | description: | |
| 44 | For historical reasons, this does not follow the generic mmc-controller |
| 45 | binding. |
| 46 | minItems: 1 |
| 47 | items: |
| 48 | - description: Card-Detect GPIO |
| 49 | - description: Write-Protect GPIO |
| 50 | |
| 51 | required: |
| 52 | - compatible |
| 53 | - reg |
| 54 | - spi-max-frequency |
| 55 | |
| 56 | unevaluatedProperties: false |
| 57 | |
| 58 | examples: |
| 59 | - | |
| 60 | #include <dt-bindings/gpio/gpio.h> |
| 61 | spi { |
| 62 | #address-cells = <1>; |
| 63 | #size-cells = <0>; |
| 64 | mmc@0 { |
| 65 | compatible = "mmc-spi-slot"; |
| 66 | reg = <0>; |
| 67 | gpios = <&gpio 14 GPIO_ACTIVE_LOW>, <&gpio 15 GPIO_ACTIVE_HIGH>; |
| 68 | voltage-ranges = <3300 3300>; |
| 69 | spi-max-frequency = <50000000>; |
| 70 | interrupts = <42>; |
| 71 | interrupt-parent = <&PIC>; |
| 72 | }; |
| 73 | }; |
| 74 | |
| 75 | ... |