From: Joy Zou <joy.zou@nxp.com>
Date: Wed, 11 Feb 2026 09:28:25 +0000 (+0800)
Subject: arm64: dts: imx95: Reserve eDMA channels 0-1 for V2X
X-Git-Tag: v7.1-rc1~125^2~11^2~115
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=c915f81aa3c71247601edad955602d60d629fcdd;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: imx95: Reserve eDMA channels 0-1 for V2X

Reserve eDMA channels 0 and 1 on the AXI eDMA controller for exclusive
use by V2X (Vehicle-to-Everything) fast hash operations.

Reviewed-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Tested-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Signed-off-by: Joy Zou <joy.zou@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---

diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi
index 0c55861d673c2..5f61866e9df9e 100644
--- a/arch/arm64/boot/dts/freescale/imx95.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
@@ -636,6 +636,8 @@
 				reg = <0x42000000 0x210000>;
 				#dma-cells = <3>;
 				dma-channels = <64>;
+				/* channels 0 and 1 reserved for V2X fast hash */
+				dma-channel-mask = <0x3>;
 				interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>,
 					     <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>,
 					     <GIC_SPI 129 IRQ_TYPE_LEVEL_HIGH>,