linux-kernel - [PATCH 6/8] ARM: dts: exynos: Fix infinite interrupt in soft mode on Exynos5440

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Date:   Fri, 24 Feb 2017 17:11:20 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Wim Van Sebroeck <wim@...ana.be>,
        Guenter Roeck <linux@...ck-us.net>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Javier Martinez Canillas <javier@....samsung.com>,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: [PATCH 6/8] ARM: dts: exynos: Fix infinite interrupt in soft mode on Exynos5440

In soft (no-reboot) mode, the driver self-pings watchdog upon expiration
of an interrupt.  The interrupt has to be cleared, because otherwise
system enters infinite interrupt handling loop.

Use a samsung,s3c6410-wdt compatible to select appropriate quirk for
clearing the watchdog interrupt.

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 arch/arm/boot/dts/exynos5440.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/exynos5440.dtsi b/arch/arm/boot/dts/exynos5440.dtsi
index 77d35bb92950..abfe054b2187 100644
--- a/arch/arm/boot/dts/exynos5440.dtsi
+++ b/arch/arm/boot/dts/exynos5440.dtsi
@@ -189,7 +189,7 @@
 	};
 
 	watchdog@...000 {
-		compatible = "samsung,s3c2410-wdt";
+		compatible = "samsung,s3c6410-wdt";
 		reg = <0x110000 0x1000>;
 		interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&clock CLK_B_125>;
-- 
2.9.3