linux-kernel - [tip: irq/drivers] arm64: dts: rockchip: rk356x: Move PCIe MSI to use GIC ITS instead of MBI

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Message-ID: <174012848789.10177.5559847946988418577.tip-bot2@tip-bot2>
Date: Fri, 21 Feb 2025 09:01:27 -0000
From: "tip-bot2 for Dmitry Osipenko" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Dmitry Osipenko <dmitry.osipenko@...labora.com>,
 Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: irq/drivers] arm64: dts: rockchip: rk356x: Move PCIe MSI to use
 GIC ITS instead of MBI

The following commit has been merged into the irq/drivers branch of tip:

Commit-ID:     b956c9de91757c9478e24fc9f6a57fd46f0a49f0
Gitweb:        https://git.kernel.org/tip/b956c9de91757c9478e24fc9f6a57fd46f0a49f0
Author:        Dmitry Osipenko <dmitry.osipenko@...labora.com>
AuthorDate:    Mon, 17 Feb 2025 01:16:34 +03:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Fri, 21 Feb 2025 09:58:08 +01:00

arm64: dts: rockchip: rk356x: Move PCIe MSI to use GIC ITS instead of MBI

Rockchip 356x device-tree now supports GIC ITS. Move PCIe controller's
MSI to use ITS instead of MBI. This removes extra CPU overhead of handling
PCIe MBIs by letting GIC's ITS to serve the PCIe MSIs.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/all/20250216221634.364158-4-dmitry.osipenko@collabora.com

---
 arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
index 89ba0d7..4e730ae 100644
--- a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
@@ -969,7 +969,7 @@
 		num-ib-windows = <6>;
 		num-ob-windows = <2>;
 		max-link-speed = <2>;
-		msi-map = <0x0 &gic 0x0 0x1000>;
+		msi-map = <0x0 &its 0x0 0x1000>;
 		num-lanes = <1>;
 		phys = <&combphy2 PHY_TYPE_PCIE>;
 		phy-names = "pcie-phy";