linux-kernel - [PATCH v2] arm64: dts: rockchip: Fix wrong register range of rk3576 gpu

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Message-Id: <20260106071513.209-1-kernel@airkyi.com>
Date: Tue,  6 Jan 2026 15:15:13 +0800
From: Chaoyi Chen <kernel@...kyi.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
	Chaoyi Chen <chaoyi.chen@...k-chips.com>,
	Kever Yang <kever.yang@...k-chips.com>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
	Frank Wang <frank.wang@...k-chips.com>,
	Alexey Charkov <alchark@...il.com>,
	Liang Chen <cl@...k-chips.com>,
	Finley Xiao <finley.xiao@...k-chips.com>,
	Elaine Zhang <zhangqing@...k-chips.com>,
	Yifeng Zhao <yifeng.zhao@...k-chips.com>
Cc: devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] arm64: dts: rockchip: Fix wrong register range of rk3576 gpu

From: Chaoyi Chen <chaoyi.chen@...k-chips.com>

According to RK3576 TRM part1 Table 1-1 Address Mapping, the size of
the GPU registers is 128 KB.

The current mapping incorrectly includes the addresses of multiple
following IP like the eInk interface at 0x27900000. This has not
been detected by the DT tooling as none of the extra mapped IP is
described in the upstream RK3576 DT so far.

Fixes: 57b1ce903966 ("arm64: dts: rockchip: Add rk3576 SoC base DT")
Signed-off-by: Chaoyi Chen <chaoyi.chen@...k-chips.com>
Reviewed-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---

Changes in v2:
- Add more accurate problem description comment.
- Link to v1: https://lore.kernel.org/all/20251230090246.46-1-kernel@airkyi.com/

 arch/arm64/boot/dts/rockchip/rk3576.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576.dtsi b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
index 6284e7bdc442..b375015f0662 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
@@ -1271,7 +1271,7 @@ power-domain@...576_PD_VO1 {
 
 		gpu: gpu@...00000 {
 			compatible = "rockchip,rk3576-mali", "arm,mali-bifrost";
-			reg = <0x0 0x27800000 0x0 0x200000>;
+			reg = <0x0 0x27800000 0x0 0x20000>;
 			assigned-clocks = <&scmi_clk SCMI_CLK_GPU>;
 			assigned-clock-rates = <198000000>;
 			clocks = <&cru CLK_GPU>;
-- 
2.51.1