bindings/i2c/google%2Ccros-ec-i2c-tunnel.yaml

1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $id: http://devicetree.org/schemas/i2c/google,cros-ec-i2c-tunnel.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: I2C bus that tunnels through the ChromeOS EC (cros-ec)
11   - Doug Anderson <dianders@chromium.org>
12   - Benson Leung <bleung@chromium.org>
15   On some ChromeOS board designs we've got a connection to the EC
17   other side of the EC (like a battery and PMIC).  To get access to
18   those devices we need to tunnel our i2c commands through the EC.
20   The node for this device should be under a cros-ec node like
21   google,cros-ec-spi or google,cros-ec-i2c.
24   - $ref: /schemas/i2c/i2c-controller.yaml#
28     const: google,cros-ec-i2c-tunnel
30   google,remote-bus:
31     description: The EC bus we'd like to talk to.
35   - compatible
36   - google,remote-bus
41   - |
42     spi {
43         #address-cells = <1>;
44         #size-cells = <0>;
46         cros-ec@0 {
47             compatible = "google,cros-ec-spi";
49             spi-max-frequency = <5000000>;
52             i2c-tunnel {
53                 compatible = "google,cros-ec-i2c-tunnel";
54                 #address-cells = <1>;
55                 #size-cells = <0>;
57                 google,remote-bus = <0>;
59                 battery: sbs-battery@b {
60                     compatible = "sbs,sbs-battery";
62                     sbs,poll-retry-count = <1>;