LF-531-2 arm64: dts: imx8mn: add cma setting

Fix GPU AXI bus error when run WebGL 2.0 CTS,

The original CMA size is 320MB, set with 640MB,
This patch will align 8MN CMA size with L4.14.

Signed-off-by: Xianzhong <xianzhong.li@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index dbdad56..ffc63a4 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -147,6 +147,21 @@
                };
        };
 
+       resmem: reserved-memory {
+               #address-cells = <2>;
+               #size-cells = <2>;
+               ranges;
+
+               /* global autoconfigured region for contiguous allocations */
+               linux,cma {
+                       compatible = "shared-dma-pool";
+                       reusable;
+                       size = <0 0x28000000>;
+                       alloc-ranges = <0 0x40000000 0 0x60000000>;
+                       linux,cma-default;
+               };
+       };
+
        osc_32k: clock-osc-32k {
                compatible = "fixed-clock";
                #clock-cells = <0>;