Re: [PATCH] arm64: dts: imx95: Reserve eDMA channels 0-1 for V2X
From: Laurentiu Mihalcea <hidden>
Date: 2026-01-20 12:29:43
Also in:
imx, linux-devicetree, lkml
On 1/20/2026 12:35 AM, Joy Zou wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- --- 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 = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 129 IRQ_TYPE_LEVEL_HIGH>,--- 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 <redacted> Tested-by: Laurentiu Mihalcea <redacted> # MX95-15x15-FRDM, MX95-19x19-EVK