linux-kernel - [PATCHv2 2/5] arm64: dts: allwinner: a64: Add watchdog

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Message-Id: <20180315162510.11669-3-harald@ccbib.org>
Date:   Thu, 15 Mar 2018 16:25:07 +0000
From:   Harald Geyer <harald@...ib.org>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andre Przywara <andre.przywara@....com>,
        Icenowy Zheng <icenowy@...c.io>, info@...mex.com,
        Harald Geyer <harald@...ib.org>
Subject: [PATCHv2 2/5] arm64: dts: allwinner: a64: Add watchdog

Add a watchdog node for the A64, automatically enabled on all boards.
Since the device is compatible with an existing driver, we only reserve
a new compatible string to be used together with the fall back.
Tested on Olimex Teres-I.

Signed-off-by: Harald Geyer <harald@...ib.org>
---
changes since v1:
 * add and use a specific compatible string

 Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt | 6 ++++--
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi            | 7 +++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt b/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt
index 62dd5baad70e..04fc368d828f 100644
--- a/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt
@@ -2,8 +2,10 @@ Allwinner SoCs Watchdog timer
 
 Required properties:
 
-- compatible : should be either "allwinner,sun4i-a10-wdt" or
-               "allwinner,sun6i-a31-wdt"
+- compatible : should be one of
+	"allwinner,sun4i-a10-wdt"
+	"allwinner,sun6i-a31-wdt"
+	"allwinner,sun50i-a64-wdt","allwinner,sun6i-a31-wdt"
 - reg : Specifies base physical address and size of the registers.
 
 Example:
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 64e452a758fa..8401e7f887ff 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -665,5 +665,12 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 		};
+
+		wdt0: watchdog@...0ca0 {
+			compatible = "allwinner,sun50i-a64-wdt",
+				     "allwinner,sun6i-a31-wdt";
+			reg = <0x01c20ca0 0x20>;
+			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+		};
 	};
 };
-- 
2.11.0