Re: [PATCH] arm64: dts: qcom: sm7225-fairphone-fp4: Fix conflicting bias pinctrl

[Conor Dooley]

On Thu, Mar 19, 2026 at 09:55:00AM +0100, Luca Weiss wrote:
> The pinctrl nodes from sm6350.dtsi already contain a bias-* property, so
> that needs to be deleted, otherwise the dtb will contain two conflicting
> bias-* properties.
> 
> Reported-by: Conor Dooley <conor@xxxxxxxxxx>
> Closes: https://lore.kernel.org/r/20260310-maritime-silly-05e7b7e03aa6@spud/
> Fixes: c4ef464b24c5 ("arm64: dts: qcom: sm7225-fairphone-fp4: Add Bluetooth")
> Signed-off-by: Luca Weiss <luca.weiss@xxxxxxxxxxxxx>

Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>

Thanks Luca.

> ---
>  arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> index a3c2b26736f4..3964aae47fd4 100644
> --- a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> +++ b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> @@ -1019,12 +1019,14 @@ &qup_uart1_cts {
>  	 * the Bluetooth module drives the pin in either
>  	 * direction or leaves the pin fully unpowered.
>  	 */
> +	/delete-property/ bias-disable;
>  	bias-bus-hold;
>  };
>  
>  &qup_uart1_rts {
>  	/* We'll drive RTS, so no pull */
>  	drive-strength = <2>;
> +	/delete-property/ bias-pull-down;
>  	bias-disable;
>  };
>  
> @@ -1035,12 +1037,14 @@ &qup_uart1_rx {
>  	 * in tri-state (module powered off or not driving the
>  	 * signal yet).
>  	 */
> +	/delete-property/ bias-disable;
>  	bias-pull-up;
>  };
>  
>  &qup_uart1_tx {
>  	/* We'll drive TX, so no pull */
>  	drive-strength = <2>;
> +	/delete-property/ bias-pull-up;
>  	bias-disable;
>  };
>  
> 
> ---
> base-commit: de79886ae0ce739608514f6b1ae91c14c6a9e600
> change-id: 20260319-fp4-uart1-fix-9fe390294499
> 
> Best regards,
> -- 
> Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
>

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