linux-kernel - Re: [PATCH 2/3] arm64: dts: sprd: sc2731: fix bat-detect-gpios property

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Message-ID: <ZyMyJrSPTfFrSC-t@standask-GA-A55M-S2HP>
Date: Thu, 31 Oct 2024 08:30:46 +0100
From: Stanislav Jakubek <stano.jakubek@...il.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Orson Zhai <orsonzhai@...il.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	Chunyan Zhang <zhang.lyra@...il.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: sprd: sc2731: fix bat-detect-gpios
 property

On Thu, Aug 15, 2024 at 12:13:18PM +0200, Stanislav Jakubek wrote:
> According to DT bindings, the property is called bat-detect-gpios, not
> bat-detect-gpio. Update the property as such.
> 
> Signed-off-by: Stanislav Jakubek <stano.jakubek@...il.com>
> ---
>  arch/arm64/boot/dts/sprd/sc2731.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/sprd/sc2731.dtsi b/arch/arm64/boot/dts/sprd/sc2731.dtsi
> index 12136e68dada..c8b30c0479fd 100644
> --- a/arch/arm64/boot/dts/sprd/sc2731.dtsi
> +++ b/arch/arm64/boot/dts/sprd/sc2731.dtsi
> @@ -97,7 +97,7 @@ pmic_adc: adc@480 {
>  		fuel-gauge@a00 {
>  			compatible = "sprd,sc2731-fgu";
>  			reg = <0xa00>;
> -			bat-detect-gpio = <&pmic_eic 9 GPIO_ACTIVE_HIGH>;
> +			bat-detect-gpios = <&pmic_eic 9 GPIO_ACTIVE_HIGH>;
>  			io-channels = <&pmic_adc 3>, <&pmic_adc 6>;
>  			io-channel-names = "bat-temp", "charge-vol";
>  			monitored-battery = <&bat>;
> -- 
> 2.34.1
> 

Hi all,

looking at this patch again, it seems there's some confusion going on.
The bindings specify the property as "battery-detect-gpios", but the driver
checks for "bat-detect" [1]. I assume the DTS was added with "bat-detect"
to make it work, even though it's not conformant to bindings.
It has been this way since the bindings/driver/DTS were introduced
back in 2018/2019.

What would be the correct way to fix this? Change the bindings to
"bat-detect-gpios" or change the driver/DTS to "battery-detect-gpios"?

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/power/supply/sc27xx_fuel_gauge.c?h=v6.11#n1186

Regards,
Stanislav