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

[Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>]

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;
+		bias-disable;
+	};
+};
+
 &qusb2phy0 {
 	status = "okay";
 

---
base-commit: 0d9d0dbf2fddcff5859d623e90ca73c4054276e1
change-id: 20260920-ifc6560-adv-b8ed1242008b

Best regards,
--  
With best wishes
Dmitry