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Date: Wed, 29 Jul 2026 22:56:07 +0530
Message-Id: <DKB8BQP42BAT.3TZICIQBS85Z3@disroot.org>
Cc: "Jonathan Cameron" <jic23@kernel.org>, "David Lechner"
 <dlechner@baylibre.com>, =?utf-8?q?Nuno_S=C3=A1?= <nuno.sa@analog.com>,
 "Andy Shevchenko" <andy@kernel.org>, "Rob Herring" <robh@kernel.org>,
 "Krzysztof Kozlowski" <krzk+dt@kernel.org>, "Conor Dooley"
 <conor+dt@kernel.org>, "Peter Griffin" <peter.griffin@linaro.org>, "Alim
 Akhtar" <alim.akhtar@samsung.com>, <linux-iio@vger.kernel.org>,
 <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
 <linux-arm-kernel@lists.infradead.org>, <linux-samsung-soc@vger.kernel.org>
Subject: Re: [PATCH 1/3] dt-bindings: iio: proximity: add Sharp GP2AP070S
 proximity sensor
From: "Kaustabh Chakraborty" <kauschluss@disroot.org>
To: "Joshua Crofts" <joshua.crofts1@gmail.com>, "Kaustabh Chakraborty"
 <kauschluss@disroot.org>
References: <20260723-gp2ap070s-v1-0-b8ca3a4c10dd@disroot.org>
 <20260723-gp2ap070s-v1-1-b8ca3a4c10dd@disroot.org>
 <20260723234751.5ff138bd@systembl0wer>
In-Reply-To: <20260723234751.5ff138bd@systembl0wer>

On 2026-07-23 23:47 +02:00, Joshua Crofts wrote:
> On Thu, 23 Jul 2026 22:58:33 +0530
> Kaustabh Chakraborty <kauschluss@disroot.org> wrote:
>
>> The GP2AP070S is a proximity sensor designed and manufactured by Sharp
>> Corporation. Unlike the other GP2AP* schemas, this is strictly a
>> proximity sensor and NOT an ambient light sensor.
>>=20
>> For power supplies, it expects two voltage supplies, one for core and
>> other for driving the infrared LED which is used to measure proximity
>> distance.
>>=20
>> This chip has been used in production mobile devices such as the Samsung
>> Galaxy J6.
>>=20
>> Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
>> ---
>
> ...
>
>> +  vdd-supply:
>> +    description: Voltage supply for the internal circuitry
>> +
>> +  vled-supply:
>> +    description: Voltage supply for the IR LED
>> +
>> +  proximity-near-level: true
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>
> vdd-supply and vled-supply are definitely required.

Only marking vdd-supply as required as some chips are able to draw LED
power from vdd-supply instead of its own regulator.