Re: [PATCH] arm64: dts: rockchip: Fix wrong register range of rk3576 gpu
From: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Date: 2026-01-05 07:55:45
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linux-arm-kernel, linux-rockchip, lkml
On Tuesday, 30 December 2025 10:02:46 Central European Standard Time Chaoyi Chen wrote:
quoted hunk ↗ jump to hunk
From: Chaoyi Chen <redacted> According to RK3576 TRM part1 page13, the size of the GPU registers is 128 KB. Fixes: 57b1ce903966 ("arm64: dts: rockchip: Add rk3576 SoC base DT") Signed-off-by: Chaoyi Chen <redacted> --- 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@RK3576_PD_VO1 { gpu: gpu@27800000 { 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>;
This is only true if you only consider the GPU_CONTROL and JOB_CONTROL register ranges, and leave out the MMU_STAGE1 and MMU_STAGE2 ranges. I don't know if those need to be mapped, since the MMU control registers are < 0x2000. What do other bifrost devices do? Kind regards, Nicolas Frattaroli