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