linux-kernel - [PATCH v3 2/2] arm64: dts: imx95-evk: update the dma-channel-mask property

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Message-Id: <20260130-b4-imx95-v2x-v3-2-95af05bece95@nxp.com>
Date: Fri, 30 Jan 2026 17:36:28 +0800
From: Joy Zou <joy.zou@....com>
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>, Frank Li <Frank.Li@....com>, 
 Peng Fan <peng.fan@....com>, Ye Li <ye.li@....com>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Joy Zou <joy.zou@....com>
Subject: [PATCH v3 2/2] arm64: dts: imx95-evk: update the dma-channel-mask
 property

Have reserved eDMA2 channels 0 and 1 for V2X fast hash in imx95.dtsi.
So update the dma-channel-mask from 0xc0000000 to 0xc0000003 to mark
channels 0, 1, 30, and 31 as reserved.

Signed-off-by: Joy Zou <joy.zou@....com>
---
 arch/arm64/boot/dts/freescale/imx95-19x19-evk-sof.dts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx95-19x19-evk-sof.dts b/arch/arm64/boot/dts/freescale/imx95-19x19-evk-sof.dts
index 808a9fe3ebb2b9557be9e428583e76c32517de08..264703f6eef64813d64fe07713cf92fd02fa0778 100644
--- a/arch/arm64/boot/dts/freescale/imx95-19x19-evk-sof.dts
+++ b/arch/arm64/boot/dts/freescale/imx95-19x19-evk-sof.dts
@@ -55,8 +55,11 @@ sound-wm8962 {
 };
 
 &edma2 {
-	/* channels 30 and 31 reserved for FW usage */
-	dma-channel-mask = <0xc0000000>, <0x0>;
+	/*
+	 * channels 0 and 1 reserved for V2X fast hash,
+	 * channels 30 and 31 reserved for FW usage
+	 */
+	dma-channel-mask = <0xc0000003>, <0x0>;
 };
 
 &sai3 {

-- 
2.37.1