xref: /linux/Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml (revision 66e72a01b60ae6950ddbb3585fdc1424d303e14b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mmc/amlogic,meson-gx-mmc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Amlogic SD / eMMC controller for S905/GXBB family SoCs
8
9description:
10  The MMC 5.1 compliant host controller on Amlogic provides the
11  interface for SD, eMMC and SDIO devices
12
13maintainers:
14  - Neil Armstrong <neil.armstrong@linaro.org>
15
16allOf:
17  - $ref: mmc-controller.yaml#
18
19properties:
20  compatible:
21    oneOf:
22      - const: amlogic,meson-axg-mmc
23      - items:
24          - const: amlogic,meson-gx-mmc
25          - const: amlogic,meson-gxbb-mmc
26
27  reg:
28    maxItems: 1
29
30  interrupts:
31    minItems: 1
32    items:
33      - description: mmc controller instance
34      - description: card detect
35
36  clocks:
37    maxItems: 3
38
39  clock-names:
40    items:
41      - const: core
42      - const: clkin0
43      - const: clkin1
44
45  resets:
46    maxItems: 1
47
48  amlogic,dram-access-quirk:
49    type: boolean
50    description:
51      set when controller's internal DMA engine cannot access the DRAM memory,
52      like on the G12A dedicated SDIO controller.
53
54  power-domains:
55    maxItems: 1
56
57required:
58  - compatible
59  - reg
60  - interrupts
61  - clocks
62  - clock-names
63  - resets
64
65unevaluatedProperties: false
66
67examples:
68  - |
69    #include <dt-bindings/interrupt-controller/irq.h>
70    #include <dt-bindings/interrupt-controller/arm-gic.h>
71    mmc@70000 {
72        compatible = "amlogic,meson-gx-mmc", "amlogic,meson-gxbb-mmc";
73        reg = <0x70000 0x2000>;
74        interrupts = <GIC_SPI 216 IRQ_TYPE_EDGE_RISING>;
75        clocks = <&clk_mmc>, <&xtal>, <&clk_div>;
76        clock-names = "core", "clkin0", "clkin1";
77        pinctrl-0 = <&emm_pins>;
78        resets = <&reset_mmc>;
79    };
80