Add devicetree bindings I2C Add bindings doc for Sunplus SP7021 Signed-off-by: LH.Kuo <lh.kuo@xxxxxxxxxxx> --- 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@xxxxxxxxxxx> + +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@xxxxxxxxxxx> L: linux-i2c@xxxxxxxxxxxxxxx S: Maintained +F: Documentation/devicetree/bindings/i2c/i2c-sunplus.yaml F: drivers/i2c/busses/i2c-sunplus.c SUPERH -- 2.7.4
