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    Subject[PATCH v2 2/2] devicetree bindings mmc Add bindings doc for Sunplus SP7021
    Date
    Add devicetree bindings mmc Add bindings doc for Sunplus SP7021

    Signed-off-by: LH.Kuo <lh.kuo@sunplus.com>
    ---
    Changes in v2:
    - Addressed all comments from Mr. Philipp Zabel
    - Modified the structure and register access method.
    - Modifiedthe path about MAINTAINERS. ( wrong messages PATH in v1).

    .../devicetree/bindings/mmc/sunplus-sd2.yaml | 82 ++++++++++++++++++++++
    MAINTAINERS | 1 +
    2 files changed, 83 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml

    diff --git a/Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml b/Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml
    new file mode 100644
    index 0000000..95dc0bb
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml
    @@ -0,0 +1,82 @@
    +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    +# Copyright (C) Sunplus Co., Ltd. 2021
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/mmc/sunplus-sd2.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Sunplus SD/SDIO controller
    +
    +maintainers:
    + - lh.kuo <lh.kuo@sunplus.com>
    +
    +properties:
    + compatible:
    + enum:
    + - sunplus,sp7021-card1
    + - sunplus,sp7021-sdio
    +
    + reg:
    + items:
    + - description: Base address and length of the SD/SDIO registers
    +
    + interrupts:
    + maxItems: 1
    +
    + clocks:
    + maxItems: 1
    +
    + resets:
    + maxItems: 1
    +
    + pinctrl-names:
    + description:
    + A pinctrl state named "default" must be defined.
    + const: default
    +
    + pinctrl-0:
    + description:
    + A phandle to the default pinctrl state.
    +
    + max-frequency: true
    +
    +allOf:
    + - $ref: "mmc-controller.yaml"
    +
    +required:
    + - compatible
    + - reg
    + - interrupts
    + - clocks
    + - resets
    + - pinctrl-names
    + - pinctrl-0
    +
    +additionalProperties: false
    +
    +examples:
    + - |
    + #include <dt-bindings/clock/sp-sp7021.h>
    + #include <dt-bindings/reset/sp-sp7021.h>
    + #include <dt-bindings/interrupt-controller/irq.h>
    + mmc1: mmc@9C003e80 {
    + compatible = "sunplus,sp7021-card1";
    + reg = <0x9c003e80 0x280>;
    + interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;
    + clocks = <&clkc CARD_CTL1>;
    + resets = <&rstc RST_CARD_CTL1>;
    + pinctrl-names = "default";
    + pinctrl-0 = <&mmc1_mux &mmc1_mux_cd>;
    + max-frequency = <52000000>;
    + };
    + sdio: mmc@9C008400 {
    + compatible = "sunplus,sp7021-sdio";
    + reg = <0x9c008400 0x280>;
    + interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;
    + clocks = <&clkc CARD_CTL1>;
    + resets = <&rstc RST_CARD_CTL1>;
    + pinctrl-names = "default";
    + pinctrl-0 = <&pins_sdio>;
    + max-frequency = <52000000>;
    + };
    +...
    diff --git a/MAINTAINERS b/MAINTAINERS
    index 2746084..e653a1d 100644
    --- a/MAINTAINERS
    +++ b/MAINTAINERS
    @@ -18193,6 +18193,7 @@ SUNPLUS SD/SDIO HOST CONTROLLER INTERFACE DRIVER
    M: LH Kuo <lh.kuo@sunplus.com>
    L: linux-mmc@vger.kernel.org
    S: Maintained
    +F: Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml
    F: drivers/mmc/host/sunplus_sd2.*

    SUPERH
    --
    2.7.4
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