* [PATCH v2] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency
@ 2026-01-27 23:28 Sebastian Krzyszkowiak
2026-01-27 23:41 ` Fabio Estevam
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Sebastian Krzyszkowiak @ 2026-01-27 23:28 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam
Cc: devicetree, imx, linux-arm-kernel, linux-kernel, kernel, Frank Li,
Sebastian Krzyszkowiak
According to i.MX 8M Quad Reference Manual, GPU_AHB_CLK_ROOT's maximum
frequency is 400MHz.
Fixes: 45d2c84eb3a2 ("arm64: dts: imx8mq: add GPU node")
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
---
Changes in v2:
- added Fixes trailer as suggested by Fabio Estevam
- Link to v1: https://lore.kernel.org/r/20260124-imx8mq-gpu-ahb-clock-v1-1-11c2e7c857b7@puri.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@38000000 {
<&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@puri.sm>
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency
2026-01-27 23:28 [PATCH v2] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency Sebastian Krzyszkowiak
@ 2026-01-27 23:41 ` Fabio Estevam
2026-01-28 5:58 ` Peng Fan
2026-02-24 19:46 ` Frank Li
2 siblings, 0 replies; 4+ messages in thread
From: Fabio Estevam @ 2026-01-27 23:41 UTC (permalink / raw)
To: Sebastian Krzyszkowiak
Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, devicetree, imx,
linux-arm-kernel, linux-kernel, kernel, Frank Li
Hi Sebastian,
On Tue, Jan 27, 2026 at 8:28 PM Sebastian Krzyszkowiak
<sebastian.krzyszkowiak@puri.sm> wrote:
>
> According to i.MX 8M Quad Reference Manual, GPU_AHB_CLK_ROOT's maximum
> frequency is 400MHz.
>
> Fixes: 45d2c84eb3a2 ("arm64: dts: imx8mq: add GPU node")
> Reviewed-by: Frank Li <Frank.Li@nxp.com>
> Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
> ---
> Changes in v2:
> - added Fixes trailer as suggested by Fabio Estevam
> - Link to v1: https://lore.kernel.org/r/20260124-imx8mq-gpu-ahb-clock-v1-1-11c2e7c857b7@puri.sm
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Thanks
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency
2026-01-27 23:28 [PATCH v2] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency Sebastian Krzyszkowiak
2026-01-27 23:41 ` Fabio Estevam
@ 2026-01-28 5:58 ` Peng Fan
2026-02-24 19:46 ` Frank Li
2 siblings, 0 replies; 4+ messages in thread
From: Peng Fan @ 2026-01-28 5:58 UTC (permalink / raw)
To: Sebastian Krzyszkowiak
Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam, devicetree,
imx, linux-arm-kernel, linux-kernel, kernel, Frank Li
On Wed, Jan 28, 2026 at 12:28:28AM +0100, Sebastian Krzyszkowiak wrote:
>According to i.MX 8M Quad Reference Manual, GPU_AHB_CLK_ROOT's maximum
>frequency is 400MHz.
>
>Fixes: 45d2c84eb3a2 ("arm64: dts: imx8mq: add GPU node")
>Reviewed-by: Frank Li <Frank.Li@nxp.com>
>Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency
2026-01-27 23:28 [PATCH v2] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency Sebastian Krzyszkowiak
2026-01-27 23:41 ` Fabio Estevam
2026-01-28 5:58 ` Peng Fan
@ 2026-02-24 19:46 ` Frank Li
2 siblings, 0 replies; 4+ messages in thread
From: Frank Li @ 2026-02-24 19:46 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
Sebastian Krzyszkowiak
Cc: Frank Li, devicetree, imx, linux-arm-kernel, linux-kernel, kernel
On Wed, 28 Jan 2026 00:28:28 +0100, Sebastian Krzyszkowiak wrote:
> According to i.MX 8M Quad Reference Manual, GPU_AHB_CLK_ROOT's maximum
> frequency is 400MHz.
>
>
Applied, thanks!
[1/1] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency
commit: 1f99b5d93d99ca17d50b386a674d0ce1f20932d8
Best regards,
--
Frank Li <Frank.Li@nxp.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
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2026-01-27 23:28 [PATCH v2] arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency Sebastian Krzyszkowiak
2026-01-27 23:41 ` Fabio Estevam
2026-01-28 5:58 ` Peng Fan
2026-02-24 19:46 ` Frank Li
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