From: Dmitry Osipenko <dmitry.osipenko@collabora.com>
To: Heiko Stuebner <heiko@sntech.de>, Marc Zyngier <maz@kernel.org>
Cc: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
devicetree@vger.kernel.org, linux-rockchip@lists.infradead.org,
linux-kernel@vger.kernel.org,
Kever Yang <kever.yang@rock-chips.com>,
XiaoDong Huang <derrick.huang@rock-chips.com>,
Peter Geis <pgwipeout@gmail.com>,
Robin Murphy <robin.murphy@arm.com>,
kernel@collabora.com
Subject: [PATCH v1 4/4] arm64: dts: rockchip: rk356x: Move PCIe MSI to use GIC ITS instead of MBI
Date: Sun, 16 Feb 2025 02:54:31 +0300 [thread overview]
Message-ID: <20250215235431.143138-5-dmitry.osipenko@collabora.com> (raw)
In-Reply-To: <20250215235431.143138-1-dmitry.osipenko@collabora.com>
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
prev parent reply other threads:[~2025-02-15 23:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-15 23:54 [PATCH v1 0/4] Add Rockchip 3568001/2 errata workarounds and enable ITS on RK356x Dmitry Osipenko
2025-02-15 23:54 ` [PATCH v1 1/4] irqchip/gic-v3: Add Rockchip 3568002 erratum workaround Dmitry Osipenko
2025-02-16 9:55 ` Marc Zyngier
2025-02-16 15:25 ` Dmitry Osipenko
2025-02-16 18:21 ` Marc Zyngier
2025-02-15 23:54 ` [PATCH v1 2/4] arm64: dts: rockchip: rk356x: Add dma-noncoherent property to GIC node Dmitry Osipenko
2025-02-15 23:54 ` [PATCH v1 3/4] arm64: dts: rockchip: rk356x: Add MSI controller node Dmitry Osipenko
2025-02-16 9:59 ` Marc Zyngier
2025-02-16 15:26 ` Dmitry Osipenko
2025-02-15 23:54 ` Dmitry Osipenko [this message]
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