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[v4,3/5] arm64: dts: ti: k3-am65-mcu: Add RTI watchdog entry

Message ID b36a8fbe11f700ba8dd689fa898a424df85739a3.1627669292.git.jan.kiszka@siemens.com
State Superseded
Delegated to: Lokesh Vutla
Headers show
Series Add SIMATIC IOT2050 board support | expand

Commit Message

Jan Kiszka July 30, 2021, 6:21 p.m. UTC 
From: Jan Kiszka <jan.kiszka@siemens.com>

Add the DT entry for a watchdog based on RTI1. It requires additional
firmware on the MCU R5F cores to handle the expiry, e.g.
https://github.com/siemens/k3-rti-wdt. As this firmware will also lock
the power domain to protect it against premature shutdown, mark it
shared.

Aligns us to the kernel's DT in this regard.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 arch/arm/dts/k3-am65-mcu.dtsi | 9 +++++++++
 1 file changed, 9 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 7454c8cec0..903796bf7d 100644
--- a/arch/arm/dts/k3-am65-mcu.dtsi
+++ b/arch/arm/dts/k3-am65-mcu.dtsi
@@ -308,4 +308,13 @@ 
 			ti,loczrama = <1>;
 		};
 	};
+
+	mcu_rti1: rti@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>;
+	};
 };