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From: Devarsh Thakkar <devarsht@ti.com>
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CC: <praneeth@ti.com>, <a-bhatia1@ti.com>, <j-luthra@ti.com>,
        <b-brnich@ti.com>, <detheridge@ti.com>, <p-mantena@ti.com>,
        <vijayp@ti.com>, <devarsht@ti.com>
Subject: [PATCH 3/3] arm64: dts: ti: k3-am62p5-sk: Reserve 576 MiB of global CMA
Date: Thu, 13 Jun 2024 20:39:02 +0530
Message-ID: <20240613150902.2173582-4-devarsht@ti.com>
In-Reply-To: <20240613150902.2173582-1-devarsht@ti.com>
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From: Brandon Brnich <b-brnich@ti.com>

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@ti.com>
Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
---
 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