[PATCH v4 8/8] arm64: dts: st: use lptimer3 as tick broadcast source on stm32mp257f-ev1
Fabrice Gasnier
fabrice.gasnier at foss.st.com
Fri Mar 14 10:14:51 PDT 2025
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 at foss.st.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier at foss.st.com>
---
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
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