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| author | Marek Vasut <marex@denx.de> | 2024-05-13 23:58:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-03 08:53:27 +0200 |
| commit | b6271fb067bfbf012e680c204e136e795c51a554 (patch) | |
| tree | 7f42b5c7ecdda7a7435f6ebed4d9e8776c0e97e3 /arch/arm | |
| parent | 0fffc2e1bf40a2220ef5a38f834ea063dba832d3 (diff) | |
| download | linux-b6271fb067bfbf012e680c204e136e795c51a554.tar.gz linux-b6271fb067bfbf012e680c204e136e795c51a554.tar.bz2 linux-b6271fb067bfbf012e680c204e136e795c51a554.zip | |
ARM: dts: stm32: Add arm,no-tick-in-suspend to STM32MP15xx STGEN timer
[ Upstream commit 4306c047415a227bc72f0e7ba9bde1ccdac10435 ]
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 <marex@denx.de>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/st/stm32mp151.dtsi | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/st/stm32mp151.dtsi b/arch/arm/boot/dts/st/stm32mp151.dtsi index 61508917521c..aec7fa5ab5d8 100644 --- a/arch/arm/boot/dts/st/stm32mp151.dtsi +++ b/arch/arm/boot/dts/st/stm32mp151.dtsi @@ -50,6 +50,7 @@ <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>, <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>; interrupt-parent = <&intc>; + arm,no-tick-in-suspend; }; clocks { |