linux-kernel - Re: [PATCH v3 09/11] arm64: dts: qcom: sdm845-lg-common: Add camera flash

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Message-ID: <42463474-7fba-4df3-9dbb-24140581690f@oss.qualcomm.com>
Date: Wed, 1 Oct 2025 11:04:34 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Paul Sajna <sajattack@...tmarketos.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>, David Heidelberg <david@...t.cz>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org,
        Amir Dahan <system64fumo@...tonmail.com>,
        Christopher Brown <crispybrown@...il.com>
Subject: Re: [PATCH v3 09/11] arm64: dts: qcom: sdm845-lg-common: Add camera
 flash

On 9/29/25 7:05 AM, Paul Sajna wrote:
> So it can be used as a flashlight
> 
> Signed-off-by: Paul Sajna <sajattack@...tmarketos.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
> index a8c8706f2057d36d5ef4130f11d9ad417f93d575..f309e6ebc075a691c7a522238b4a93ba9e63f3c0 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
> @@ -509,6 +509,19 @@ &pm8998_resin {
>  	status = "okay";
>  };
>  
> +&pmi8998_flash {
> +	status = "okay";
> +
> +	led-0 {
> +		function = LED_FUNCTION_FLASH;
> +		color = <LED_COLOR_ID_WHITE>;
> +		led-sources = <1>;
> +		led-max-microamp = <850000>;
> +		flash-max-microamp = <850000>;

Allowing the same current for flash (brief on/off for night photos)
and LED (flashlight which you normally toggle through quick settings)
sounds no less than suspicious

Konrad

> +		flash-max-timeout-us = <500000>;
> +	};
> +};
> +
>  &pmi8998_lpg {
>  	status = "okay";
>  
>