arm64: dts: fvp: Add system timer for broadcast during CPU idle

Introduce a system-level timer node in the FVP device tree to act as
a broadcast timer when CPUs are in context losing idle states where
the local timer stops on entering such low power states.

This change complements recent CPU idle state additions.

Tested-by: Leo Yan <leo.yan@arm.com>
Message-Id: <20250509154640.836093-1-sudeep.holla@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

diff --git a/arch/arm64/boot/dts/arm/fvp-base-revc.dts b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
index 9e10d7a6b5a2ce9ece2666c601a895311bf2c88b..50b5993a24602e2b73ececb4b33211274ed910bf 100644 (file)
--- a/arch/arm64/boot/dts/arm/fvp-base-revc.dts
+++ b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
@@ -217,6 +217,19 @@
                             <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
        };
 
+       timer@2a810000 {
+               compatible = "arm,armv7-timer-mem";
+               reg = <0x0 0x2a810000 0x0 0x10000>;
+               ranges = <0 0x0 0x2a820000 0x20000>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+               frame@2a830000 {
+                       frame-number = <1>;
+                       interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+                       reg = <0x10000 0x10000>;
+               };
+       };
+
        pmu {
                compatible = "arm,armv8-pmuv3";
                interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;