linux-kernel - Re: [PATCH v2 1/2] dt-bindings: at24: add new optional power-supply property

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Message-ID: <20220822214623.GA907654-robh@kernel.org>
Date:   Mon, 22 Aug 2022 16:46:23 -0500
From:   Rob Herring <robh@...nel.org>
To:     Eliav Farber <farbere@...zon.com>
Cc:     brgl@...ev.pl, mark.rutland@....com, arnd@...db.de,
        gregkh@...uxfoundation.org, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        talel@...zon.com, hhhawa@...zon.com, jonnyc@...zon.com,
        hanochu@...zon.com, ronenk@...zon.com, itamark@...zon.com,
        shellykz@...zon.com, shorer@...zon.com, amitlavi@...zon.com,
        almogbs@...zon.com, dkl@...zon.com, dwmw@...zon.co.uk
Subject: Re: [PATCH v2 1/2] dt-bindings: at24: add new optional power-supply
 property

On Mon, Aug 22, 2022 at 10:58:29AM +0000, Eliav Farber wrote:
> Boards using the AT24 EEPROMs might have a GPIO that controls the power
> supply of the chip, and it must be set to enable the usage of it.
> 
> Add a new optional property to the device tree binding document, which
> allows to specify a GPIO regulator for the pin that controls the power.
> 
> On Linux this means that we need to enable the GPIO at the beginning of
> probe function, before trying to access the chip.
> 
> Signed-off-by: Eliav Farber <farbere@...zon.com>
> ---
> V1 -> V2:
> Change pointed out by Rob Herring:
> - Use a gpio regulator for power-supply control.
> 
>  Documentation/devicetree/bindings/eeprom/at24.txt | 3 +++
>  1 file changed, 3 insertions(+)

This file doesn't exist any more. Use the latest -rc1 kernel unless 
there is a reason you need a different (even later) base.

Rob