From: Dong Aisheng <aisheng.dong@nxp.com>
Date: Tue, 10 Mar 2020 09:19:04 +0000 (+0800)
Subject: LF-1106 arm64: dts: imx8mq-evk: reduce cma reserved memory size to 896M
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~577^2~2^2~482
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=be3b86ec530f8d8bf919d730cd94e0392a7daab9;p=linux.git

LF-1106 arm64: dts: imx8mq-evk: reduce cma reserved memory size to 896M

Currently the cma reserved memory allocation will fail due to conflict
with rpmsg reserved memory which results in a lot of VPU test failure.

e.g
rpmsg_reserved: rpmsg@0xb8000000 {
        no-map;
        reg = <0 0xb8000000 0 0x400000>;
};

This patch worked around this issue first by reducing the CMA size to 896M
from 960M.

We're still investigating a more sane approach to add back the correct
requirement CMA memory (per MM team, it may need 1060M).

Reviewed-by: ZHOU PENG <eagle.zhou@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index 1c8c8bf74acc..698789beefb0 100755
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -50,8 +50,8 @@
 		linux,cma {
 			compatible = "shared-dma-pool";
 			reusable;
-			size = <0 0x3c000000>;
-			alloc-ranges = <0 0x80000000 0 0x40000000>;
+			size = <0 0x38000000>;
+			alloc-ranges = <0 0x80000000 0 0x38000000>;
 			linux,cma-default;
 		};
 	};