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Message-ID: <CAFqH_53sdcXOgQDO7xr51na5yqT_2UULa5M2gfnCmF1HRuTfow@mail.gmail.com>
Date: Thu, 27 Feb 2020 22:23:52 +0100
From: Enric Balletbo Serra <eballetbo@...il.com>
To: Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
Cc: "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Benson Leung <bleung@...omium.org>,
Enric Balletbo i Serra <enric.balletbo@...labora.com>,
Guenter Roeck <groeck@...omium.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
helen.koike@...labora.com,
Ezequiel Garcia <ezequiel@...labora.com>,
Collabora Kernel ML <kernel@...labora.com>, dafna3@...il.com,
Sebastian Reichel <sebastian.reichel@...labora.com>,
Wolfram Sang <wsa@...-dreams.de>, linux-i2c@...r.kernel.org
Subject: Re: [PATCH v5 1/2] dt-bindings: i2c: cros-ec-tunnel: convert
i2c-cros-ec-tunnel.txt to yaml
Hi Dafna,
cc'ing Wolfram and linux-i2c ML
Missatge de Dafna Hirschfeld <dafna.hirschfeld@...labora.com> del dia
dj., 27 de febr. 2020 a les 15:58:
>
> Convert the binding file i2c-cros-ec-tunnel.txt to yaml format.
>
> This was tested and verified on ARM and ARM64 with:
>
> make dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml
> make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml
>
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
>From my side:
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
We still need Rob's review and as this is a driver in the I2C
subsystem I assume this should go through the Wolfram's tree (note
that was not cc'ied, it is now). I can also pick the patch through
platform-chrome tree if Wolfram is fine.
Thanks,
Enric
> ---
> Changes since v1:
> - changing the subject to start with "dt-bindings: i2c: cros-ec-tunnel:"
> - changing the license to (GPL-2.0-only OR BSD-2-Clause)
> - removing "Guenter Roeck <groeck@...omium.org>" from the maintainers list
> - adding ref: /schemas/i2c/i2c-controller.yaml
>
> Changes since v2:
> - adding another patch that fixes a warning found by this patch
>
> Changes since v3:
> - In the example, change sbs-battery@b to battery@b
>
> Changes since v4:
> - change the name of the yaml file to google,cros-ec-i2c-tunnel.yaml
> - make the example more complete by adding spi0 as parent and other properties.
>
> .../i2c/google,cros-ec-i2c-tunnel.yaml | 69 +++++++++++++++++++
> .../bindings/i2c/i2c-cros-ec-tunnel.txt | 39 -----------
> 2 files changed, 69 insertions(+), 39 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml
> delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-cros-ec-tunnel.txt
>
> diff --git a/Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml b/Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml
> new file mode 100644
> index 000000000000..e26c9fc3e33f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml
> @@ -0,0 +1,69 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/i2c/google,cros-ec-i2c-tunnel.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: I2C bus that tunnels through the ChromeOS EC (cros-ec)
> +
> +maintainers:
> + - Benson Leung <bleung@...omium.org>
> + - Enric Balletbo i Serra <enric.balletbo@...labora.com>
> +
> +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: /schemas/i2c/i2c-controller.yaml#
> +
> +properties:
> + compatible:
> + const:
> + google,cros-ec-i2c-tunnel
> +
> + google,remote-bus:
> + $ref: "/schemas/types.yaml#/definitions/uint32"
> + description: The EC bus we'd like to talk to.
> +
> + "#address-cells": true
> + "#size-cells": true
> +
> +patternProperties:
> + "^.*@[0-9a-f]+$":
> + type: object
> + description: One node per I2C device connected to the tunnelled I2C bus.
> +
> +additionalProperties: false
> +
> +required:
> + - compatible
> + - google,remote-bus
> +
> +examples:
> + - |
> + spi0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + cros-ec@0 {
> + compatible = "google,cros-ec-spi";
> + reg = <0>;
> +
> + i2c-tunnel {
> + compatible = "google,cros-ec-i2c-tunnel";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + google,remote-bus = <0>;
> +
> + battery: battery@b {
> + compatible = "sbs,sbs-battery";
> + reg = <0xb>;
> + sbs,poll-retry-count = <1>;
> + };
> + };
> + };
> + };
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-cros-ec-tunnel.txt b/Documentation/devicetree/bindings/i2c/i2c-cros-ec-tunnel.txt
> deleted file mode 100644
> index 898f030eba62..000000000000
> --- a/Documentation/devicetree/bindings/i2c/i2c-cros-ec-tunnel.txt
> +++ /dev/null
> @@ -1,39 +0,0 @@
> -I2C bus that tunnels through the ChromeOS EC (cros-ec)
> -======================================================
> -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.
> -
> -
> -Required properties:
> -- compatible: google,cros-ec-i2c-tunnel
> -- google,remote-bus: The EC bus we'd like to talk to.
> -
> -Optional child nodes:
> -- One node per I2C device connected to the tunnelled I2C bus.
> -
> -
> -Example:
> - cros-ec@0 {
> - compatible = "google,cros-ec-spi";
> -
> - ...
> -
> - 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>;
> - };
> - };
> - }
> --
> 2.17.1
>
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