linux-kernel - [PATCH V2 06/10] arm64: dts: imx8ulp-evk: add reserved memory for cma

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Message-Id: <20230724075833.2763190-7-peng.fan@oss.nxp.com>
Date:   Mon, 24 Jul 2023 15:58:29 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de
Cc:     kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH V2 06/10] arm64: dts: imx8ulp-evk: add reserved memory for cma

From: Peng Fan <peng.fan@....com>

Add reserved memory node for CMA usage.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 arch/arm64/boot/dts/freescale/imx8ulp-evk.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
index f1c6d933a17c..e171390a1888 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
@@ -20,6 +20,19 @@ memory@...00000 {
 		reg = <0x0 0x80000000 0 0x80000000>;
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		linux,cma {
+			compatible = "shared-dma-pool";
+			reusable;
+			size = <0 0x28000000>;
+			linux,cma-default;
+		};
+	};
+
 	clock_ext_rmii: clock-ext-rmii {
 		compatible = "fixed-clock";
 		clock-frequency = <50000000>;
-- 
2.37.1