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    Subject[PATCH v2 2/2] devicetree bindings I2C Add bindings doc for Sunplus SP7021
    Date
    Add devicetree bindings I2C Add bindings doc for Sunplus SP7021

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

    .../devicetree/bindings/i2c/i2c-sunplus.yaml | 82 ++++++++++++++++++++++
    MAINTAINERS | 1 +
    2 files changed, 83 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/i2c/i2c-sunplus.yaml

    diff --git a/Documentation/devicetree/bindings/i2c/i2c-sunplus.yaml b/Documentation/devicetree/bindings/i2c/i2c-sunplus.yaml
    new file mode 100644
    index 0000000..af860ee
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/i2c/i2c-sunplus.yaml
    @@ -0,0 +1,82 @@
    +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    +# Copyright (C) Sunplus Co., Ltd. 2021
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/i2c/i2c-sunplus.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Sunplus's I2C controller
    +
    +allOf:
    + - $ref: /schemas/i2c/i2c-controller.yaml#
    +
    +maintainers:
    + - lh.kuo <lh.kuo@sunplus.com>
    +
    +properties:
    + compatible:
    + enum:
    + - sunplus,sp7021-i2cm
    + - sunplus,q645-i2cm
    +
    + reg:
    + items:
    + - description: Base address and length of the I2C registers
    + - description: Base address and length of the I2C DMA registers
    +
    + reg-names:
    + items:
    + - const: i2cm
    + - const: i2cmdma
    +
    + interrupts:
    + maxItems: 1
    +
    + clocks:
    + maxItems: 1
    +
    + resets:
    + maxItems: 1
    +
    + clock-frequency:
    + enum: [ 100000, 400000 ]
    +
    + pinctrl-names:
    + description:
    + A pinctrl state named "default" must be defined.
    + const: default
    +
    + pinctrl-0:
    + description:
    + A phandle to the default pinctrl state.
    +
    +required:
    + - compatible
    + - reg
    + - reg-names
    + - interrupts
    + - clocks
    + - resets
    + - pinctrl-names
    + - pinctrl-0
    +
    +unevaluatedProperties: false
    +
    +examples:
    + - |
    + #include <dt-bindings/clock/sp-sp7021.h>
    + #include <dt-bindings/reset/sp-sp7021.h>
    + #include <dt-bindings/interrupt-controller/irq.h>
    + i2c@9C004600 {
    + compatible = "sunplus,sp7021-i2cm";
    + reg = <0x9c004600 0x80>, <0x9c004680 0x80>;
    + reg-names = "i2cm", "i2cmdma";
    + interrupt-parent = <&intc>;
    + interrupts = <174 IRQ_TYPE_LEVEL_HIGH>;
    + clocks = <&clkc I2CM0>;
    + resets = <&rstc RST_I2CM0>;
    + clock-frequency = <100000>;
    + pinctrl-names = "default";
    + pinctrl-0 = <&i2cm0_pins>;
    + };
    +...
    diff --git a/MAINTAINERS b/MAINTAINERS
    index 5b7a8a2..575a8e0 100644
    --- a/MAINTAINERS
    +++ b/MAINTAINERS
    @@ -18193,6 +18193,7 @@ SUNPLUS I2C CONTROLLER INTERFACE DRIVER
    M: LH Kuo <lh.kuo@sunplus.com>
    L: linux-i2c@vger.kernel.org
    S: Maintained
    +F: Documentation/devicetree/bindings/i2c/i2c-sunplus.yaml
    F: drivers/i2c/busses/i2c-sunplus.c

    SUPERH
    --
    2.7.4
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