linux-kernel - Re: [PATCH 3/5] arm64: dts: qcom: r0q: enable max77705 PMIC

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Message-ID: <BB4E3024-F897-452B-9D3F-250ED2D52195@gmail.com>
Date: Thu, 25 Sep 2025 23:19:09 -0300
From: Eric Gonçalves <ghatto404@...il.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 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>
CC: devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] arm64: dts: qcom: r0q: enable max77705 PMIC



On September 25, 2025 10:06:53 AM GMT-03:00, Konrad Dybcio <konrad.dybcio@....qualcomm.com> wrote:
>On 9/20/25 3:46 AM, Eric Gonçalves wrote:
>> The Samsung Galaxy S22 uses max77705 as its charger, fuelgauge and haptic
>> PMIC, enable the fuelgauge and charger for now.
>> 
>> Signed-off-by: Eric Gonçalves <ghatto404@...il.com>
>> ---
>
>[...]
>
>> +&i2c5 {
>> +	status = "okay";
>> +
>> +	max77705_charger: charger@69 {
>> +	    compatible = "maxim,max77705-charger";
>> +	    reg = <0x69>;
>
>Please use tabs consistently
Sure
>
>> +	    monitored-battery = <&battery>;
>> +	    interrupt-parent = <&tlmm>;
>> +	    interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
>
>interrupts-extended = <&tlmm 5 IRQ...>, here and below
why extended?
>
>> +	};
>> +
>> +	fuel-gauge@36 {
>> +		reg = <0x36>;
>
>sorting by unit address is welcome
Sure
>
>> +		compatible = "maxim,max77705-battery";
>> +		power-supplies = <&max77705_charger>;
>> +		interrupt-parent = <&tlmm>;
>> +		interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
>> +	};
>
>These nodes should be children of "maxim,max77705"
>(see drivers/mfd/max77705.c)
What do you mean by this? I looked at the driver, 
should I add the pmic@66 node and put
the units inside of it? Because starqltechn doesn't do that and
places them outside. Also, by adding the
pmic@66
node it expects to have led/haptics nodes as well.
>
>Konrad