linux-kernel - [PATCH v1 08/13] ARM: tegra: cardhu: Correct interrupt trigger type of temperature sensor

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Message-Id: <20210711234403.24691-9-digetx@gmail.com>
Date:   Mon, 12 Jul 2021 02:43:58 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Matt Merhar <mattmerhar@...tonmail.com>,
        Peter Geis <pgwipeout@...il.com>
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: [PATCH v1 08/13] ARM: tegra: cardhu: Correct interrupt trigger type of temperature sensor

The LM90 temperature sensor should use edge-triggered interrupt because
LM90 hardware doesn't deassert interrupt line until temperature is back
to normal state, which results in interrupt storm. Correct the interrupt
trigger type.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 arch/arm/boot/dts/tegra30-cardhu.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi b/arch/arm/boot/dts/tegra30-cardhu.dtsi
index d9dd11569d4b..448f1397e64a 100644
--- a/arch/arm/boot/dts/tegra30-cardhu.dtsi
+++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi
@@ -348,7 +348,7 @@ nct1008: temperature-sensor@4c {
 			reg = <0x4c>;
 			vcc-supply = <&sys_3v3_reg>;
 			interrupt-parent = <&gpio>;
-			interrupts = <TEGRA_GPIO(CC, 2) IRQ_TYPE_LEVEL_LOW>;
+			interrupts = <TEGRA_GPIO(CC, 2) IRQ_TYPE_EDGE_FALLING>;
 			#thermal-sensor-cells = <1>;
 		};
 
-- 
2.32.0