arm64: dts: ti: k3-am65-mcu: Add RTI watchdog entry

Add the DT entry for a watchdog based on RTI1.

On SR1.0 silicon, 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.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Praneeth Bajjuri <praneeth@ti.com>
Link: https://lore.kernel.org/r/279c20fa-6e5e-4f88-9cd1-f76297a28a19@web.de

diff --git a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
index 7454c8cec0cc584658deb99b719622a14f4520c2..0388c02c22037317e764e6a180a8bc9b64617d52 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
@@ -308,4 +308,13 @@
                        ti,loczrama = <1>;
                };
        };
+
+       mcu_rti1: watchdog@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>;
+       };
 };