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Re: [PATCH 1/2] dt-bindings: add the regulator optional properties

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  Re: [PATCH 1/2] dt-bindings: add the regulator optional properties Rob Herring <robh@kernel.org> - 2016-09-12 18:20 +0200

#1481519 — Re: [PATCH 1/2] dt-bindings: add the regulator optional properties

On Mon, Sep 05, 2016 at 06:11:55AM +0800, Caesar Wang wrote:
> Add the regulator properties that will be used to power on/off
> the regulator.
> 
> Signed-off-by: Caesar Wang <wxt@rock-chips.com>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Jiri Kosina <jikos@kernel.org>
> Cc: linux-input@vger.kernel.org
> ---
> 
>  Documentation/devicetree/bindings/input/hid-over-i2c.txt | 3 +++
>  1 file changed, 3 insertions(+)

I find this binding a bit questionable. The compatible should describe 
the actual device, not just the protocol it uses.

> diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.txt b/Documentation/devicetree/bindings/input/hid-over-i2c.txt
> index 488edcb..e648e44 100644
> --- a/Documentation/devicetree/bindings/input/hid-over-i2c.txt
> +++ b/Documentation/devicetree/bindings/input/hid-over-i2c.txt
> @@ -17,6 +17,9 @@ Required properties:
>  - interrupt-parent: the phandle for the interrupt controller
>  - interrupts: interrupt line
>  
> +Optional properties:
> +- power-supply: phandle of the regulator that provides the supply voltage.

This needs to be actual supplies for devices. What if a device has 2 
supplies?

Add a device compatible string and make this property specific to that 
device, then it's fine.

Rob

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