On Thu, Feb 06, 2020 at 04:47:59PM +0100, Enric Balletbo i Serra wrote:
> Hi Dafna,
>
> On 5/2/20 12:00, Dafna Hirschfeld wrote:
> > convert the binding file extcon-usbc-cros-ec.txt to yaml format
> > This was tested and verified on ARM with:
> > make dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> > make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> >
> > Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@xxxxxxxxxxxxx>
> > ---
> > Changes since v1:
> > 1 - changing the license to (GPL-2.0-only OR BSD-2-Clause)
> > 2 - changing the maintainers
> > 3 - changing the google,usb-port-id property to have minimum 0 and maximum 255
> >
> > .../bindings/extcon/extcon-usbc-cros-ec.txt | 24 ----------
> > .../bindings/extcon/extcon-usbc-cros-ec.yaml | 45 +++++++++++++++++++
> > 2 files changed, 45 insertions(+), 24 deletions(-)
> > delete mode 100644 Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt
> > create mode 100644 Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt b/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt
> > deleted file mode 100644
> > index 8e8625c00dfa..000000000000
> > --- a/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt
> > +++ /dev/null
> > @@ -1,24 +0,0 @@
> > -ChromeOS EC USB Type-C cable and accessories detection
> > -
> > -On ChromeOS systems with USB Type C ports, the ChromeOS Embedded Controller is
> > -able to detect the state of external accessories such as display adapters
> > -or USB devices when said accessories are attached or detached.
> > -
> > -The node for this device must be under a cros-ec node like google,cros-ec-spi
> > -or google,cros-ec-i2c.
> > -
> > -Required properties:
> > -- compatible: Should be "google,extcon-usbc-cros-ec".
> > -- google,usb-port-id: Specifies the USB port ID to use.
> > -
> > -Example:
> > - cros-ec@0 {
> > - compatible = "google,cros-ec-i2c";
> > -
> > - ...
> > -
> > - extcon {
> > - compatible = "google,extcon-usbc-cros-ec";
> > - google,usb-port-id = <0>;
> > - };
> > - }
> > diff --git a/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml b/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> > new file mode 100644
> > index 000000000000..fd95e413d46f
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> > @@ -0,0 +1,45 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/extcon/extcon-usbc-cros-ec.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: ChromeOS EC USB Type-C cable and accessories detection
> > +
> > +maintainers:
> > + - Benson Leung <bleung@xxxxxxxxxxxx>
> > + - Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
> > +
> > +description: |
> > + On ChromeOS systems with USB Type C ports, the ChromeOS Embedded Controller is
> > + able to detect the state of external accessories such as display adapters
> > + or USB devices when said accessories are attached or detached.
> > + The node for this device must be under a cros-ec node like google,cros-ec-spi
> > + or google,cros-ec-i2c.
> > +
> > +properties:
> > + compatible:
> > + const: google,extcon-usbc-cros-ec
> > +
> > + google,usb-port-id:
> > + allOf:
> > + - $ref: /schemas/types.yaml#/definitions/uint32
> > + description: the port id
> > + minimum: 0
> > + maximum: 255
> > +
> > +required:
> > + - compatible
> > + - google,usb-port-id
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + cros-ec@0 {
> > + compatible = "google,cros-ec-i2c";
>
> Now that you are here ... could you use compatible = "google,cros-ec-spi" here?
>
> The reason is that the label above, cros-ec@0 is not really correct for an i2c
> device because after the @ you should put the address, cros-ec@1e will have more
> sense here. But cros-ec-i2c is rarely used, so I'd change the compatible to use
> "google,cros-ec-spi" and the entry "cros-ec@0" is fine.
>
> > + extcon {
> > + compatible = "google,extcon-usbc-cros-ec";
> > + google,usb-port-id = <0>;
> > + };
>
> And maybe would be useful have a more complete example like this?
>
> cros-ec@0 {
> compatible = "google,cros-ec-spi";
There should also be a 'spi' parent node and 'reg' here.
>
> usbc_extcon0: extcon@0 {
And no unit-address here as there's no 'reg'.
> compatible = "google,extcon-usbc-cros-ec";
> google,usb-port-id = <0>;
> };
>
>
> usbc_extcon1: extcon@1 {
> compatible = "google,extcon-usbc-cros-ec";
> google,usb-port-id = <1>;
> };
> };
