linux-kernel - [PATCH v1 2/4] arm64: dts: rockchip: rk356x: Add dma-noncoherent property to GIC node

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Message-ID: <20250215235431.143138-3-dmitry.osipenko@collabora.com>
Date: Sun, 16 Feb 2025 02:54:29 +0300
From: Dmitry Osipenko <dmitry.osipenko@...labora.com>
To: Heiko Stuebner <heiko@...ech.de>,
	Marc Zyngier <maz@...nel.org>
Cc: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	devicetree@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Kever Yang <kever.yang@...k-chips.com>,
	XiaoDong Huang <derrick.huang@...k-chips.com>,
	Peter Geis <pgwipeout@...il.com>,
	Robin Murphy <robin.murphy@....com>,
	kernel@...labora.com
Subject: [PATCH v1 2/4] arm64: dts: rockchip: rk356x: Add dma-noncoherent property to GIC node

Rockchip 3566/8 SoCs are affected by the GIC integration issue where
GIC reports that it supports programmable shareability in a feature
register, while in fact it doesn't support this feature. Rockchip
assigned Errata ID #3568001 for the issue.

Add dma-noncoherent GIC property, denoting that a SW quirk is required
for the GIC.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>
---
 arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
index de5e6c0c3d24..28be38b7182e 100644
--- a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
@@ -284,6 +284,7 @@ gic: interrupt-controller@...00000 {
 		mbi-alias = <0x0 0xfd410000>;
 		mbi-ranges = <296 24>;
 		msi-controller;
+		dma-noncoherent;
 	};
 
 	usb_host0_ehci: usb@...00000 {
-- 
2.48.1