Re: [PATCH] arm64: dts: qcom: sda660-inforce-ifc6560: fix ADV7535 interrupt pin

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 9/20/26 1:11 PM, Dmitry Baryshkov wrote:
> Probing the ADV7535 HDMI bridge fails on the IFC6560:
> 
>   gpio gpiochip3: (800f000.spmi:pmic@2:gpio@c000): gpiochip_lock_as_irq: tried to flag a GPIO set as output for IRQ
>   gpio gpiochip3: (800f000.spmi:pmic@2:gpio@c000): unable to lock HW IRQ 10 for IRQ
> 
> The bridge's interrupt line is PM660L GPIO11, but the board never
> configures that pad. pmic_gpio_populate() reads back the state left by
> the bootloader, which is PMIC_GPIO_MODE_DIGITAL_OUTPUT, so
> pmic_gpio_get_direction() reports GPIO_LINE_DIRECTION_OUT and
> gpiochip_lock_as_irq() refuses the line. Requesting the interrupt then
> fails and the bridge does not probe.
> 
> Add a default pinctrl state switching the pad to digital input, applied
> by pinctrl_bind_pins() before the driver requests the interrupt. The
> ADV7535 INT pin is open-drain and pulled up on the board, so leave the
> internal bias disabled.
> 
> Fixes: 34279d6e3f32 ("arm64: dts: qcom: sdm660: Add initial Inforce IFC6560 board support")
> Assisted-by: LLM
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts b/arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts
> index 9e14f53b552e..fdedae49d1d0 100644
> --- a/arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts
> +++ b/arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts
> @@ -170,6 +170,9 @@ adv7533: hdmi@39 {
>  		interrupt-parent = <&pm660l_gpios>;
>  		interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
>  
> +		pinctrl-0 = <&adv7533_int_default>;
> +		pinctrl-names = "default";
> +
>  		clocks = <&rpmcc RPM_SMD_BB_CLK2>;
>  		clock-names = "cec";
>  		/*
> @@ -285,6 +288,16 @@ sw_ctrl_default: sw-ctrl-default-state {
>  	};
>  };
>  
> +&pm660l_gpios {
> +	adv7533_int_default: adv7533-int-default-state {
> +		pins = "gpio11";
> +		function = "normal";
> +
> +		input-enable;

strange \n in the middle

> +		bias-disable;

Plus you'd likely want a PU here, unless there's one onboard

Konrad