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66 lines
1.7 KiB
66 lines
1.7 KiB
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/i2c/google,cros-ec-i2c-tunnel.yaml# |
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$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: |
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- Doug Anderson <[email protected]> |
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- Benson Leung <[email protected]> |
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- Enric Balletbo i Serra <[email protected]> |
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description: | |
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On some ChromeOS board designs we've got a connection to the EC |
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(embedded controller) but no direct connection to some devices on the |
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other side of the EC (like a battery and PMIC). To get access to |
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those devices we need to tunnel our i2c commands through the EC. |
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The node for this device should be under a cros-ec node like |
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google,cros-ec-spi or google,cros-ec-i2c. |
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allOf: |
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- $ref: i2c-controller.yaml# |
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properties: |
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compatible: |
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const: google,cros-ec-i2c-tunnel |
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google,remote-bus: |
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description: The EC bus we'd like to talk to. |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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required: |
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- compatible |
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- google,remote-bus |
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unevaluatedProperties: false |
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examples: |
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- | |
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spi0 { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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cros-ec@0 { |
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compatible = "google,cros-ec-spi"; |
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reg = <0>; |
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spi-max-frequency = <5000000>; |
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i2c-tunnel { |
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compatible = "google,cros-ec-i2c-tunnel"; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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google,remote-bus = <0>; |
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battery: sbs-battery@b { |
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compatible = "sbs,sbs-battery"; |
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reg = <0xb>; |
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sbs,poll-retry-count = <1>; |
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}; |
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}; |
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}; |
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};
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