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Tue, 20 Jan 2026 04:29:41 -0800 (PST) Message-ID: <993363fb-8ce4-4a89-b6c4-8fbf181ad410@gmail.com> Date: Tue, 20 Jan 2026 04:30:32 -0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: imx95: Reserve eDMA channels 0-1 for V2X To: Joy Zou , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Frank Li , Peng Fan , Ye Li Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260120-b4-imx95-v2x-v1-1-52b2025b27a0@nxp.com> Content-Language: en-US From: Laurentiu Mihalcea In-Reply-To: <20260120-b4-imx95-v2x-v1-1-52b2025b27a0@nxp.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 1/20/2026 12:35 AM, Joy Zou wrote: > Reserve eDMA channels 0 and 1 on the AXI eDMA controller for exclusive > use by V2X (Vehicle-to-Everything) fast hash operations. > > Signed-off-by: Joy Zou > --- > --- > arch/arm64/boot/dts/freescale/imx95.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi > index 55e2da094c889fc7c1096d0e36f31ae118d2a982..24d02aa18b2f480bbffdc30bc41c658fb3aaf67a 100644 > --- a/arch/arm64/boot/dts/freescale/imx95.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx95.dtsi > @@ -631,6 +631,7 @@ edma2: dma-controller@42000000 { > reg = <0x42000000 0x210000>; > #dma-cells = <3>; > dma-channels = <64>; > + dma-channel-mask = <0x3>; > interrupts = , > , > , > > --- > base-commit: d08c85ac8894995d4b0d8fb48d2f6a3e53cd79ab > change-id: 20260120-b4-imx95-v2x-3e01c7bc6881 > > Best regards, Thanks, this fixes the kernel panics on MX95-15x15-FRDM and MX95-19x19-EVK after AP access is removed from said channels via SM. Just one thing: can you do this change for imx95-19x19-evk-sof.dts as well? If not, I'll just send a patch for that later on. Either way: Reviewed-by: Laurentiu Mihalcea Tested-by: Laurentiu Mihalcea  # MX95-15x15-FRDM, MX95-19x19-EVK