[PATCH v2 3/3] arm64: dts: rockchip: rk356x: Move PCIe MSI to use GIC ITS instead of MBI

Dmitry Osipenko posted 3 patches 10 months ago
[PATCH v2 3/3] arm64: dts: rockchip: rk356x: Move PCIe MSI to use GIC ITS instead of MBI
Posted by Dmitry Osipenko 10 months ago
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@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 423185686600..4f11141ea146 100644
--- a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
@@ -969,7 +969,7 @@ pcie2x1: pcie@fe260000 {
 		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";
-- 
2.48.1
[tip: irq/drivers] arm64: dts: rockchip: rk356x: Move PCIe MSI to use GIC ITS instead of MBI
Posted by tip-bot2 for Dmitry Osipenko 10 months ago
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@collabora.com>
AuthorDate:    Mon, 17 Feb 2025 01:16:34 +03:00
Committer:     Thomas Gleixner <tglx@linutronix.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@collabora.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.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";