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dt-bindings: i2c: convert i2c-cros-ec-tunnel to json-schema
Convert the google,cros-ec-i2c-tunnel binding to YAML and add it as a property of google,cros-ec.yaml. Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com> Link: https://lore.kernel.org/r/20201021114308.25485-2-ricardo.canuelo@collabora.com [robh: add ref to i2c-controller.yaml] Signed-off-by: Rob Herring <robh@kernel.org>
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Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) | ||
%YAML 1.2 | ||
--- | ||
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$id: http://devicetree.org/schemas/i2c/google,cros-ec-i2c-tunnel.yaml# | ||
$schema: http://devicetree.org/meta-schemas/core.yaml# | ||
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title: I2C bus that tunnels through the ChromeOS EC (cros-ec) | ||
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maintainers: | ||
- Doug Anderson <dianders@chromium.org> | ||
- Benson Leung <bleung@chromium.org> | ||
- Enric Balletbo i Serra <enric.balletbo@collabora.com> | ||
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description: | | ||
On some ChromeOS board designs we've got a connection to the EC | ||
(embedded controller) but no direct connection to some devices on the | ||
other side of the EC (like a battery and PMIC). To get access to | ||
those devices we need to tunnel our i2c commands through the EC. | ||
The node for this device should be under a cros-ec node like | ||
google,cros-ec-spi or google,cros-ec-i2c. | ||
allOf: | ||
- $ref: i2c-controller.yaml# | ||
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properties: | ||
compatible: | ||
const: google,cros-ec-i2c-tunnel | ||
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google,remote-bus: | ||
description: The EC bus we'd like to talk to. | ||
$ref: /schemas/types.yaml#/definitions/uint32 | ||
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required: | ||
- compatible | ||
- google,remote-bus | ||
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unevaluatedProperties: false | ||
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examples: | ||
- | | ||
spi0 { | ||
#address-cells = <1>; | ||
#size-cells = <0>; | ||
cros-ec@0 { | ||
compatible = "google,cros-ec-spi"; | ||
reg = <0>; | ||
spi-max-frequency = <5000000>; | ||
i2c-tunnel { | ||
compatible = "google,cros-ec-i2c-tunnel"; | ||
#address-cells = <1>; | ||
#size-cells = <0>; | ||
google,remote-bus = <0>; | ||
battery: sbs-battery@b { | ||
compatible = "sbs,sbs-battery"; | ||
reg = <0xb>; | ||
sbs,poll-retry-count = <1>; | ||
}; | ||
}; | ||
}; | ||
}; |
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Documentation/devicetree/bindings/i2c/i2c-cros-ec-tunnel.txt
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