linux-kernel - [PATCH 6/6] arm64: dts: qcom: sc8280xp-crd: use external pull up for touch reset

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Message-ID: <20240423134611.31979-7-johan+linaro@kernel.org>
Date: Tue, 23 Apr 2024 15:46:11 +0200
From: Johan Hovold <johan+linaro@...nel.org>
To: Jiri Kosina <jikos@...nel.org>,
	Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Douglas Anderson <dianders@...omium.org>,
	linux-input@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 6/6] arm64: dts: qcom: sc8280xp-crd: use external pull up for touch reset

The touch controller reset line is currently not described by the
devicetree except in the pin configuration which is used to deassert
reset.

As the reset line has an external pull up to an always-on rail there is
no need to drive the pin high so just leave it configured as an input
and disable the internal pull down.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 arch/arm64/boot/dts/qcom/sc8280xp-crd.dts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
index 08b3627049bc..68e70c983c94 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
@@ -1014,8 +1014,7 @@ int-n-pins {
 		reset-n-pins {
 			pins = "gpio99";
 			function = "gpio";
-			output-high;
-			drive-strength = <16>;
+			bias-disable;
 		};
 	};
 
-- 
2.43.2