From 8803d9438ef65c96b03ae95472e19b3ac072c930 Mon Sep 17 00:00:00 2001 From: Ali El-Haj-Mahmoud Date: Wed, 18 Jan 2023 10:00:30 -0500 Subject: [PATCH] arm: dts: aspeed: tyan s8036: Enable kcs interrupts When the BIOS is built with kcs interrupts enabled, not enabling interrupts on the BMC results in very poor IPMI performance. The other way around (BIOS with interrupts disabled, BMC with interrupts enabled) doesn't suffer degraded IPMI performance. Enabling interrupts on the BMC covers both scenarios, and should be the default. TESTED: manually verified IPMI performance when BIOS is built with and without KCS interrupts. Signed-off-by: Ali El-Haj-Mahmoud Link: https://lore.kernel.org/r/20230118150030.2079226-1-aaelhaj@google.com Signed-off-by: Joel Stanley --- arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts b/arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts index 708ee78e4b830..f6c4549c0ac47 100644 --- a/arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts +++ b/arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts @@ -364,6 +364,7 @@ &kcs3 { status = "okay"; aspeed,lpc-io-reg = <0xca2>; + aspeed,lpc-interrupts = <1 IRQ_TYPE_LEVEL_HIGH>; }; /* Enable BMC VGA output to show an early (pre-BIOS) boot screen */ -- 2.30.2