[PATCH 5/5] arm64: dts: renesas: spider-cpu: Enable watchdog timer

From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Wim Van Sebroeck <wim@linux-watchdog.org>,
	Guenter Roeck <linux@roeck-us.net>,
	Rob Herring <robh+dt@kernel.org>,
	Magnus Damm <magnus.damm@gmail.com>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>,
	LUU HOAI <hoai.luu.ub@renesas.com>,
	linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
	linux-watchdog@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH 5/5] arm64: dts: renesas: spider-cpu: Enable watchdog timer
Date: Tue, 18 Jan 2022 18:09:05 +0100	[thread overview]
Message-ID: <b36b2bb5770e10d906571721a3d73ca205b6f56e.1642525158.git.geert+renesas@glider.be> (raw)
In-Reply-To: <cover.1642525158.git.geert+renesas@glider.be>

Enable the watchdog timer on the Spider board.

Extracted from a larger patch in the BSP by LUU HOAI.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
For the watchdog to be able to actually reboot the system, this depends
on proper configuration of the Watchdog Timer Reset Control Register
(WDTRSTCR) in the Reset (RST) module, either by Linux[1], or by the
firmware.

[1] "[PATCH LOCAL v2] soc: renesas: rcar-rst: Allow WDT reset on R-Car
     Gen4"
    https://lore.kernel.org/r/39005cf749a99afc6d3ba96ff155fd2a231418a8.1642524743.git.geert+renesas@glider.be
---
 arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
index 156586532c844c41..3a90932fe85c8243 100644
--- a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
@@ -31,6 +31,11 @@ &extalr_clk {
 	clock-frequency = <32768>;
 };
 
+&rwdt {
+	timeout-sec = <60>;
+	status = "okay";
+};
+
 &scif3 {
 	status = "okay";
 };
-- 
2.25.1

