[PATCH v2 8/8] arm64: dts: st: use lptimer3 as tick broadcast source on stm32mp257f-ev1

[Fabrice Gasnier <fabrice.gasnier@xxxxxxxxxxx>]

During the low power modes the generic ARM timer is deactivated, so the
the tick broadcast is used, based on LPTIMER3 which is clocked by LSE on
STMicroelectronics boards.

Signed-off-by: Patrick Delaunay <patrick.delaunay@xxxxxxxxxxx>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxxxxxxx>
---
 arch/arm64/boot/dts/st/stm32mp257f-ev1.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
index 1b88485a62a1..242115863ab4 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
@@ -190,6 +190,14 @@ &i2c8 {
 	status = "disabled";
 };
 
+/* use LPTIMER with tick broadcast for suspend mode */
+&lptimer3 {
+	status = "okay";
+	timer {
+		status = "okay";
+	};
+};
+
 &rtc {
 	status = "okay";
 };
-- 
2.25.1