Re: [PATCH v3 3/3] arm64: dts: qcom: sdm845-oneplus: use generic fuel gauge compatible

[David Heidelberg <david@ixit.cz>]

On 10/09/2026 01:47, Rinat Muhamedgaliev wrote:
> OnePlus 6 and OnePlus 6T battery packs may contain either a TI
> bq27411 or bq27541 fuel gauge. Use the generic ti,bq27xxx compatible
> so the driver can select the register map from DeviceType at probe
> time.
> 
> Tested on OnePlus 6T (fajita) with a bq27541 (DeviceType 0x0541):
> after booting the new kernel, the battery reported 4.360 V, 100% state
> of charge, 27.8 C, and Full status.
> 
> Fixes: 12dfb002ca01 ("arm64: dts: qcom: sdm845-oneplus-*: add fuel gauge")
> 
> Signed-off-by: Rinat Muhamedgaliev <rinat.muhamedgaliev@gmail.com>
> ---
>   arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi   | 4 ++--
>   arch/arm64/boot/dts/qcom/sdm845-oneplus-enchilada.dts | 2 +-
>   arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts    | 2 +-
>   3 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
> index 948a0dd..8c5cd94 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
> @@ -790,8 +790,8 @@ &i2c10 {
>   	status = "okay";
>   	clock-frequency = <100000>;
>   
> -	bq27441_fg: bq27441-battery@55 {
> -		compatible = "ti,bq27411";
> +	bq27xxx_fg: fuel-gauge@55 {
> +		compatible = "ti,bq27xxx";

For new driver this would make definitely sense, but since we need backwards 
compatibility (someone use new device-tree, but the old driver) you want to do

compatible = "ti,bq27xxx", "ti,bq27411";

here. The 27xxx will get evaluated first, if not available fallback to existing 
driver.
>   		status = "okay";
>   		reg = <0x55>;
>   	};
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-enchilada.dts b/arch/arm64/boot/dts/qcom/sdm845-oneplus-enchilada.dts
> index 5f01115..cf40842 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-enchilada.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-enchilada.dts
> @@ -44,7 +44,7 @@ main_cam_ois: main-cam-ois-regulator {
>   	};
>   };
>   
> -&bq27441_fg {
> +&bq27xxx_fg {
>   	monitored-battery = <&battery>;
>   };
>   
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts b/arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts
> index 7ffcad2..9436027 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts
> @@ -67,7 +67,7 @@ tfa9894_codec: tfa9894@34 {
>   
>   };
>   
> -&bq27441_fg {
> +&bq27xxx_fg {
>   	monitored-battery = <&battery>;
>   };
>