[PATCH v3 14/17] arm64: dts: realtek: Add EL2 virtual timer interrupt
From: Marc Zyngier <maz@kernel.org>
Date: 2026-05-23 14:03:02
Also in:
linux-acpi, linux-devicetree, lkml
Subsystem:
arm/realtek architecture, the rest · Maintainers:
James Tai, Yu-Chun Lin, Linus Torvalds
The ARMv8.2 based CPUs used in a number of Realtek SoCs are missing the EL2 virtual timer interrupt. Add it. Furthermore, the "kent" platform appears to assign PPI9 to both the EL2 virtual timer and the GIC Maintenance Interrupt, which can't be right. Attempt a fix by setting the former to PPI12, as PPI9 is traditionally wired to the GIC itself. Signed-off-by: Marc Zyngier <maz@kernel.org> --- arch/arm64/boot/dts/realtek/kent.dtsi | 2 +- arch/arm64/boot/dts/realtek/rtd16xx.dtsi | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/realtek/kent.dtsi b/arch/arm64/boot/dts/realtek/kent.dtsi
index ae006ce244205..4147e4269247a 100644
--- a/arch/arm64/boot/dts/realtek/kent.dtsi
+++ b/arch/arm64/boot/dts/realtek/kent.dtsi@@ -23,7 +23,7 @@ timer { <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>, - <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>; + <GIC_PPI 12 IRQ_TYPE_LEVEL_HIGH>; }; cpus {
diff --git a/arch/arm64/boot/dts/realtek/rtd16xx.dtsi b/arch/arm64/boot/dts/realtek/rtd16xx.dtsi
index 3a7f6e35b7f74..43b13d133c324 100644
--- a/arch/arm64/boot/dts/realtek/rtd16xx.dtsi
+++ b/arch/arm64/boot/dts/realtek/rtd16xx.dtsi@@ -105,7 +105,8 @@ timer { interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, - <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>; + <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>, + <GIC_PPI 12 IRQ_TYPE_LEVEL_LOW>; }; arm_pmu: pmu {
--
2.47.3