[PATCH v3 2/2] arm64: dts: qcom: sda660-inforce-ifc6560: fix ADV7535 interrupt pin

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

The board never configures the PM660 GPIO11 pad carrying the ADV7535
interrupt and relies on the state left by the bootloader: an input with
the internal 10 uA pull-down enabled, working against the pull-up which
the board has on that open-drain line.

Add a default pinctrl state switching the pad to a digital input with the
output buffer and the internal bias disabled, applied by
pinctrl_bind_pins() before the driver requests the interrupt.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts b/arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts
index eef4cab8c200..b3e4a7c378b4 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 = <&pm660_gpios>;
 		interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
 
+		pinctrl-0 = <&adv7533_int_default>;
+		pinctrl-names = "default";
+
 		clocks = <&rpmcc RPM_SMD_BB_CLK2>;
 		clock-names = "cec";
 		/*
@@ -283,6 +286,15 @@ sw_ctrl_default: sw-ctrl-default-state {
 		input-enable;
 		bias-pull-down;
 	};
+
+	adv7533_int_default: adv7533-int-default-state {
+		pins = "gpio11";
+		function = "normal";
+		input-enable;
+		output-disable;
+		/* pull-up on board */
+		bias-disable;
+	};
 };
 
 &qusb2phy0 {

-- 
2.47.3