[PATCH v7 3/5] arm64: dts: ti: k3-am65-mcu: Add RTI watchdog entry

Jan Kiszka
2021-08-03T14:24:35Z

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(+)

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>;
+ };
};
--
2.31.1