linux-kernel - [PATCH] arm64: dts: imx8mq: Set the correct gpu

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Message-Id: <20260124-imx8mq-gpu-ahb-clock-v1-1-11c2e7c857b7@puri.sm>
Date: Sat, 24 Jan 2026 14:55:48 +0100
From: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 kernel@...i.sm, Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>
Subject: [PATCH] arm64: dts: imx8mq: Set the correct gpu_ahb clock
 frequency

According to i.MX 8M Quad Reference Manual, GPU_AHB_CLK_ROOT's maximum
frequency is 400MHz.

Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>
---
 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 607962f807be..6a25e219832c 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -1632,7 +1632,7 @@ gpu: gpu@...00000 {
 			                         <&clk IMX8MQ_GPU_PLL_OUT>,
 			                         <&clk IMX8MQ_GPU_PLL>;
 			assigned-clock-rates = <800000000>, <800000000>,
-			                       <800000000>, <800000000>, <0>;
+			                       <800000000>, <400000000>, <0>;
 			power-domains = <&pgc_gpu>;
 		};
 

---
base-commit: 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
change-id: 20260105-imx8mq-gpu-ahb-clock-139ba9ca9a6c

Best regards,
-- 
Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>