linux-kernel - [PATCH] Change the interrupt from level_low to edge

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Date:   Tue, 02 May 2023 14:31:14 -0400
From:   Gabriel Tremblay via B4 Relay 
        <devnull+tremblay.gabriel.gmail.com@...nel.org>
To:     Bjorn Andersson <andersson@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Gabriel Tremblay <tremblay.gabriel@...il.com>
Subject: [PATCH] Change the interrupt from level_low to edge_falling

From: Gabriel Tremblay <tremblay.gabriel@...il.com>



---
Lenovo's x13s internal keyboard shows responsivity issues when fast
typing occurs. The problem is not replicated with external HID keyboard.

This fix tries to alleviate the problem but requires further testing
and commenting.

Signed-off-by: Gabriel Tremblay <tremblay.gabriel@...il.com>
---
 arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
index bdcba719fc38..e8d7f02c9bf3 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
@@ -639,7 +639,7 @@ keyboard@68 {
 		reg = <0x68>;
 
 		hid-descr-addr = <0x1>;
-		interrupts-extended = <&tlmm 104 IRQ_TYPE_LEVEL_LOW>;
+		interrupts-extended = <&tlmm 104 IRQ_TYPE_EDGE_FALLING>;
 		vdd-supply = <&vreg_misc_3p3>;
 		vddl-supply = <&vreg_s10b>;
 

---
base-commit: 84e2893b4573da3bc0c9f24e2005442e420e3831
change-id: 20230502-gtremblay-x13s-keyboard-289935f922e2

Best regards,
-- 
Gabriel Tremblay <tremblay.gabriel@...il.com>