[PATCH v2 8/8] arm64: dts: st: use lptimer3 as tick broadcast source on stm32mp257f-ev1
From: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Date: 2025-03-04 17:40:50
Also in:
linux-devicetree, linux-iio, linux-pwm, lkml
Subsystem:
arm/stm32 architecture, the rest · Maintainers:
Maxime Coquelin, Alexandre Torgue, Linus Torvalds
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 <redacted> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@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