[PATCH 3/3] arm64: dts: ti: k3-am62p5-sk: Reserve 576 MiB of global CMA

From: Devarsh Thakkar
Date: Thu Jun 13 2024 - 11:09:52 EST


From: Brandon Brnich <b-brnich@xxxxxx>

AM62p has different multimedia components such as Camera, Display, H264
Video Codec which uses CMA for buffer allocations. We require 576MiB for 12
channel decode-to-encode 720x480@30FPS use case.

Signed-off-by: Brandon Brnich <b-brnich@xxxxxx>
Signed-off-by: Devarsh Thakkar <devarsht@xxxxxx>
---
arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
index fb980d46e304..5ef74d9f8eea 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
@@ -48,6 +48,13 @@ reserved-memory {
#size-cells = <2>;
ranges;

+ linux,cma {
+ compatible = "shared-dma-pool";
+ reusable;
+ size = <0x00 0x24000000>;
+ linux,cma-default;
+ };
+
secure_tfa_ddr: tfa@9e780000 {
reg = <0x00 0x9e780000 0x00 0x80000>;
no-map;
--
2.39.1