From: Philippe Schenker <philippe.schenker@toradex.com>
Date: Fri, 31 Oct 2025 12:49:43 +0000 (+0100)
Subject: arm64: dts: colibri-imx8x: Add cma memory
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=abc8424e7f967c8dcbafdd99ff688e7a35441128;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: colibri-imx8x: Add cma memory

Add CMA in device tree and set its size to 416MiB for all
Colibri iMX8X.
The size is tuned to be enough to play full HD video using gst-play
and to fit in the SKU with the lowest amount of RAM (1GB).

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
index 7c258e8b5aa21..47895ff8cb244 100644
--- a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
@@ -86,6 +86,19 @@
 		regulator-name = "usbh_vbus";
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		linux,cma {
+			compatible = "shared-dma-pool";
+			linux,cma-default;
+			reusable;
+			size = <0 0x1a000000>;
+		};
+	};
+
 	sound-card {
 		compatible = "simple-audio-card";
 		simple-audio-card,bitclock-master = <&dailink_master>;