From 4306c047415a227bc72f0e7ba9bde1ccdac10435 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 13 May 2024 23:58:15 +0200 Subject: [PATCH] ARM: dts: stm32: Add arm,no-tick-in-suspend to STM32MP15xx STGEN timer STM32MP15xx RM0436 Rev 6 section 46.3 System timer generator (STGEN) states " Arm recommends that the system counter is in an always-on power domain. This is not supported in the current implementation, therefore STGEN should be saved and restored before Standby mode entry, and restored at Standby exit by secure software. ... " Instead of piling up workarounds in the firmware which is difficult to update, add "arm,no-tick-in-suspend" DT property into the timer node to indicate the timer is stopped in suspend, and let the kernel fix the timer up. Fixes: 8471a20253eb ("ARM: dts: stm32: add stm32mp157c initial support") Signed-off-by: Marek Vasut Signed-off-by: Alexandre Torgue --- arch/arm/boot/dts/st/stm32mp151.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/st/stm32mp151.dtsi b/arch/arm/boot/dts/st/stm32mp151.dtsi index 90c5c72c87ab7..4f878ec102c1f 100644 --- a/arch/arm/boot/dts/st/stm32mp151.dtsi +++ b/arch/arm/boot/dts/st/stm32mp151.dtsi @@ -50,6 +50,7 @@ , ; interrupt-parent = <&intc>; + arm,no-tick-in-suspend; }; clocks { -- 2.47.3