linux-kernel - [PATCH v2 10/12] arm64: dts: zynqmp: Add missing lpd watchdog node

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Date:   Thu, 21 Jan 2021 11:26:58 +0100
From:   Michal Simek <michal.simek@...inx.com>
To:     linux-kernel@...r.kernel.org, monstr@...str.eu,
        michal.simek@...inx.com, git@...inx.com
Cc:     Kalyani Akula <kalyani.akula@...inx.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 10/12] arm64: dts: zynqmp: Add missing lpd watchdog node

Xilinx ZynqMP SoC has FPD (Full Power Domain) and LPD (Low Power Domain)
watchdogs. There are cases where also LPD WDT should be used by Arm cores
that's why list it with disabled status.

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

Changes in v2: None

 arch/arm64/boot/dts/xilinx/zynqmp-clk-ccf.dtsi | 4 ++++
 arch/arm64/boot/dts/xilinx/zynqmp.dtsi         | 9 +++++++++
 2 files changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-clk-ccf.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp-clk-ccf.dtsi
index 6a577e1383c1..3ca7e4ee51b5 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-clk-ccf.dtsi
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-clk-ccf.dtsi
@@ -223,3 +223,7 @@ &usb1 {
 &watchdog0 {
 	clocks = <&zynqmp_clk WDT>;
 };
+
+&lpd_watchdog {
+	clocks = <&zynqmp_clk LPD_WDT>;
+};
diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
index 533c19b80283..467f92c2044b 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
+++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
@@ -786,5 +786,14 @@ watchdog0: watchdog@...d0000 {
 			reg = <0x0 0xfd4d0000 0x0 0x1000>;
 			timeout-sec = <10>;
 		};
+
+		lpd_watchdog: watchdog@...50000 {
+			compatible = "cdns,wdt-r1p2";
+			status = "disabled";
+			interrupt-parent = <&gic>;
+			interrupts = <0 52 1>;
+			reg = <0x0 0xff150000 0x0 0x1000>;
+			timeout-sec = <10>;
+		};
 	};
 };
-- 
2.30.0