sdhci-pxa.yaml

  1# SPDX-License-Identifier: GPL-2.0-only
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/mmc/sdhci-pxa.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Marvell PXA SDHCI v1/v2/v3
  8
  9maintainers:
 10  - Ulf Hansson <ulf.hansson@linaro.org>
 11
 12allOf:
 13  - $ref: mmc-controller.yaml#
 14  - if:
 15      properties:
 16        compatible:
 17          contains:
 18            const: marvell,armada-380-sdhci
 19    then:
 20      properties:
 21        reg:
 22          minItems: 3
 23        reg-names:
 24          minItems: 3
 25      required:
 26        - reg-names
 27    else:
 28      properties:
 29        reg:
 30          maxItems: 1
 31        reg-names:
 32          maxItems: 1
 33  - if:
 34      properties:
 35        compatible:
 36          contains:
 37            const: mrvl,pxav1-mmc
 38    then:
 39      properties:
 40        pinctrl-names:
 41          description:
 42            Optional for supporting PXA168 SDIO IRQ errata to switch CMD pin between
 43            SDIO CMD and GPIO mode.
 44          items:
 45            - const: default
 46            - const: state_cmd_gpio
 47          minItems: 1
 48
 49        pinctrl-1:
 50          description:
 51            Should switch CMD pin to GPIO mode as a high output.
 52  - if:
 53      properties:
 54        compatible:
 55          contains:
 56            const: mrvl,pxav3-mmc
 57    then:
 58      properties:
 59        pinctrl-names:
 60          description:
 61            Optional for increasing stability of the controller at fast bus clocks.
 62          items:
 63            - const: default
 64            - const: state_uhs
 65          minItems: 1
 66
 67        pinctrl-1:
 68          description:
 69            Should switch the drive strength of the data pins to high.
 70
 71properties:
 72  compatible:
 73    enum:
 74      - mrvl,pxav1-mmc
 75      - mrvl,pxav2-mmc
 76      - mrvl,pxav3-mmc
 77      - marvell,armada-380-sdhci
 78
 79  reg:
 80    minItems: 1
 81    maxItems: 3
 82
 83  reg-names:
 84    items:
 85      - const: sdhci
 86      - const: mbus
 87      - const: conf-sdio3
 88
 89  interrupts:
 90    maxItems: 1
 91
 92  clocks:
 93    minItems: 1
 94    maxItems: 2
 95
 96  clock-names:
 97    minItems: 1
 98    items:
 99      - const: io
100      - const: core
101
102  pinctrl-names: true
103
104  pinctrl-0:
105    description:
106      Should contain default pinctrl.
107
108  pinctrl-1: true
109
110  mrvl,clk-delay-cycles:
111    description: Specify a number of cycles to delay for tuning.
112    $ref: /schemas/types.yaml#/definitions/uint32
113
114required:
115  - compatible
116  - reg
117  - interrupts
118  - clocks
119  - clock-names
120
121unevaluatedProperties: false
122
123examples:
124  - |
125    #include <dt-bindings/clock/berlin2.h>
126    mmc@d4280800 {
127        compatible = "mrvl,pxav3-mmc";
128        reg = <0xd4280800 0x800>;
129        bus-width = <8>;
130        interrupts = <27>;
131        clocks = <&chip CLKID_SDIO1XIN>, <&chip CLKID_SDIO1>;
132        clock-names = "io", "core";
133        non-removable;
134        mrvl,clk-delay-cycles = <31>;
135    };
136  - |
137    mmc@d8000 {
138        compatible = "marvell,armada-380-sdhci";
139        reg-names = "sdhci", "mbus", "conf-sdio3";
140        reg = <0xd8000 0x1000>,
141              <0xdc000 0x100>,
142              <0x18454 0x4>;
143        interrupts = <0 25 0x4>;
144        clocks = <&gateclk 17>;
145        clock-names = "io";
146        mrvl,clk-delay-cycles = <0x1F>;
147    };
148
149...