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[v2,3/3] arm: dts: k3: Add RTI watchdogs

Message ID 744204e25695c661600dbd9ee24cfab33791aeeb.1592910910.git.jan.kiszka@siemens.com
State Accepted
Commit e1c36685949ebad091f5807f980cae7be5d4ba23
Headers show
Series watchdog: K3: Add RTI watchdog support | expand

Commit Message

Jan Kiszka June 23, 2020, 11:15 a.m. UTC 
From: Jan Kiszka <jan.kiszka at siemens.com>

Add DT entries for main domain watchdog0 and 1 instances on the J721e
well as RTI1-based watchdog on the AM65x. RTI0 does not work for this
purpose on the AM65x, so leave it out.

On AM65x, we mark the power-domain as shared because RTI firmware such
as https://github.com/siemens/k3-rti-wdt may request it as well in order
to prevent accidental shutdown of the watchdog.

Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>
---
 arch/arm/dts/k3-am65-mcu.dtsi   |  9 +++++++++
 arch/arm/dts/k3-j721e-main.dtsi | 18 ++++++++++++++++++
 2 files changed, 27 insertions(+)
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Patch

diff --git a/arch/arm/dts/k3-am65-mcu.dtsi b/arch/arm/dts/k3-am65-mcu.dtsi
index bc9a87210d..6498dcdae4 100644
--- a/arch/arm/dts/k3-am65-mcu.dtsi
+++ b/arch/arm/dts/k3-am65-mcu.dtsi
@@ -102,4 +102,13 @@ 
 			#size-cells = <0>;
 		};
 	};
+
+	mcu_rti1: rti at 40610000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x0 0x40610000 0x0 0x100>;
+		clocks = <&k3_clks 135 0>;
+		power-domains = <&k3_pds 135 TI_SCI_PD_SHARED>;
+		assigned-clocks = <&k3_clks 135 0>;
+		assigned-clock-parents = <&k3_clks 135 4>;
+	};
 };
diff --git a/arch/arm/dts/k3-j721e-main.dtsi b/arch/arm/dts/k3-j721e-main.dtsi
index 1433932e7f..a285b1afa8 100644
--- a/arch/arm/dts/k3-j721e-main.dtsi
+++ b/arch/arm/dts/k3-j721e-main.dtsi
@@ -543,4 +543,22 @@ 
 		clocks = <&k3_clks 193 0>;
 		power-domains = <&k3_pds 193 TI_SCI_PD_EXCLUSIVE>;
 	};
+
+	watchdog0: watchdog at 2200000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x0 0x2200000 0x0 0x100>;
+		clocks = <&k3_clks 252 1>;
+		power-domains = <&k3_pds 252 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 252 1>;
+		assigned-clock-parents = <&k3_clks 252 5>;
+	};
+
+	watchdog1: watchdog at 2210000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x0 0x2210000 0x0 0x100>;
+		clocks = <&k3_clks 253 1>;
+		power-domains = <&k3_pds 253 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 253 1>;
+		assigned-clock-parents = <&k3_clks 253 5>;
+	};
 };