From: Frank Li <Frank.Li@nxp.com>
Date: Thu, 22 May 2025 17:56:50 +0000 (-0400)
Subject: arm64: dts: imx8q: add linux,cma node for imx8qm-mek and imx8qxp-mek
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=5876f25015168f0014d4d11f4f37e87da730c03e;p=users%2Fjedix%2Flinux-maple.git

arm64: dts: imx8q: add linux,cma node for imx8qm-mek and imx8qxp-mek

Add linux,cma node because some devices, such as camera, need big continue
physical memory.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
index e1023ca559292..9fa332dcacf45 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
@@ -113,6 +113,15 @@
 			reg = <0 0x94300000 0 0x100000>;
 			no-map;
 		};
+
+		/* global autoconfigured region for contiguous allocations */
+		linux,cma {
+			compatible = "shared-dma-pool";
+			alloc-ranges = <0 0xc0000000 0 0x3c000000>;
+			size = <0 0x3c000000>;
+			linux,cma-default;
+			reusable;
+		};
 	};
 
 	lvds_backlight0: backlight-lvds0 {
diff --git a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
index 38ebf06f2c408..2259070f0e3a3 100644
--- a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
@@ -252,6 +252,15 @@
 			no-map;
 		};
 
+		/* global autoconfigured region for contiguous allocations */
+		linux,cma {
+			compatible = "shared-dma-pool";
+			alloc-ranges = <0 0xc0000000 0 0x3c000000>;
+			size = <0 0x3c000000>;
+			linux,cma-default;
+			reusable;
+		};
+
 		gpu_reserved: memory@880000000 {
 			no-map;
 			reg = <0x8 0x80000000 0 0x10000000>;