xref: /linux/Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml (revision ae22a94997b8a03dcb3c922857c203246711f9d4) 
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
54required:
55  - compatible
56  - reg
57  - interrupts
58  - clocks
59  - clock-names
60  - resets
61
62unevaluatedProperties: false
63
64examples:
65  - |
66    #include <dt-bindings/interrupt-controller/irq.h>
67    #include <dt-bindings/interrupt-controller/arm-gic.h>
68    mmc@70000 {
69        compatible = "amlogic,meson-gx-mmc", "amlogic,meson-gxbb-mmc";
70        reg = <0x70000 0x2000>;
71        interrupts = <GIC_SPI 216 IRQ_TYPE_EDGE_RISING>;
72        clocks = <&clk_mmc>, <&xtal>, <&clk_div>;
73        clock-names = "core", "clkin0", "clkin1";
74        pinctrl-0 = <&emm_pins>;
75        resets = <&reset_mmc>;
76    };
77