[PATCH 1/2] arm64: dts: ti: k3-am62-main: PM fixes in the fss node

[Dhruva Gole <d-gole@ti.com>]

* Make use of Simple Power-Managed Bus as the fss bus controller is under
the control of a functional clock, and also is part of a PM domain.
* Specify the appropriate k3 pd to the fss node as per tisci docs [0].

[0] https://software-dl.ti.com/tisci/esd/latest/5_soc_doc/am62x/devices.html

Fixes: c37c58fdeb8a ("arm64: dts: ti: k3-am62: Add more peripheral nodes")
Co-developed-by: Vibhore Vardhan <vibhore@ti.com>
Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index 284b90c94da8..b23c9e3d91cd 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -640,10 +640,11 @@ usb1: usb@31100000 {
 	};
 
 	fss: bus@fc00000 {
-		compatible = "simple-bus";
+		compatible = "simple-pm-bus";
 		reg = <0x00 0x0fc00000 0x00 0x70000>;
 		#address-cells = <2>;
 		#size-cells = <2>;
+		power-domains = <&k3_pds 74 TI_SCI_PD_EXCLUSIVE>;
 		ranges;
 
 		ospi0: spi@fc40000 {
-- 
2.34.1