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dt-bindings: i2c: owl: Convert Actions Semi Owl binding to a schema

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Convert the Actions Semi Owl I2C DT binding to a YAML schema for
enabling DT validation.

Additionally, add a new compatible string corresponding to the I2C
controller found in the S500 variant of the Actions Semi Owl SoCs
family.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Cristian Ciocaltea 2020-11-20 01:56:04 +02:00 committed by Wolfram Sang
parent f7414cd692
commit 730f205190
3 changed files with 63 additions and 30 deletions
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29
Documentation/devicetree/bindings/i2c/i2c-owl.txt
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@ -1,29 +0,0 @@
Actions Semiconductor Owl I2C controller
Required properties:
- compatible : Should be one of the following:
- "actions,s700-i2c" for S700 SoC
- "actions,s900-i2c" for S900 SoC
- reg : Offset and length of the register set for the device.
- #address-cells : Should be 1.
- #size-cells : Should be 0.
- interrupts : A single interrupt specifier.
- clocks : Phandle of the clock feeding the I2C controller.
Optional properties:
- clock-frequency : Desired I2C bus clock frequency in Hz. As only Normal and
Fast modes are supported, possible values are 100000 and
400000.
Examples:
i2c0: i2c@e0170000 {
compatible = "actions,s900-i2c";
reg = <0 0xe0170000 0 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clock CLK_I2C0>;
clock-frequency = <100000>;
};

62
Documentation/devicetree/bindings/i2c/i2c-owl.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/i2c/i2c-owl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Actions Semi Owl I2C Controller
maintainers:
- Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
description: |
This I2C controller is found in the Actions Semi Owl SoCs:
S500, S700 and S900.
allOf:
- $ref: /schemas/i2c/i2c-controller.yaml#
properties:
compatible:
enum:
- actions,s500-i2c # Actions Semi S500 compatible SoCs
- actions,s700-i2c # Actions Semi S700 compatible SoCs
- actions,s900-i2c # Actions Semi S900 compatible SoCs
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
description: Phandle of the clock feeding the I2C controller.
minItems: 1
clock-frequency:
description: |
Desired I2C bus clock frequency in Hz. As only Standard and Fast
modes are supported, possible values are 100000 and 400000.
enum: [100000, 400000]
required:
- compatible
- reg
- interrupts
- clocks
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/actions,s900-cmu.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
i2c@e0170000 {
compatible = "actions,s900-i2c";
reg = <0xe0170000 0x1000>;
interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cmu CLK_I2C0>;
clock-frequency = <100000>;
};
...

2
MAINTAINERS
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@ -1501,7 +1501,7 @@ S: Maintained
F: Documentation/devicetree/bindings/arm/actions.yaml
F: Documentation/devicetree/bindings/clock/actions,owl-cmu.txt
F: Documentation/devicetree/bindings/dma/owl-dma.yaml
F: Documentation/devicetree/bindings/i2c/i2c-owl.txt
F: Documentation/devicetree/bindings/i2c/i2c-owl.yaml
F: Documentation/devicetree/bindings/interrupt-controller/actions,owl-sirq.yaml
F: Documentation/devicetree/bindings/mmc/owl-mmc.yaml
F: Documentation/devicetree/bindings/pinctrl/actions,*