linux-kernel - [PATCH v1 03/18] arm64: dts: imx8mq-evk: add reserve memory node for CMA region

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Message-Id: <20210217080306.157876-4-benjamin.gaignard@collabora.com>
Date:   Wed, 17 Feb 2021 09:02:51 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     ezequiel@...labora.com, p.zabel@...gutronix.de, mchehab@...nel.org,
        robh+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...l.net, krzk@...nel.org, shengjiu.wang@....com,
        adrian.ratiu@...labora.com, aisheng.dong@....com, peng.fan@....com,
        Anson.Huang@....com, hverkuil-cisco@...all.nl
Cc:     linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
        kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v1 03/18] arm64: dts: imx8mq-evk: add reserve memory node for CMA region

Define allocation range for the default CMA region.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>
Signed-off-by: Adrian Ratiu <adrian.ratiu@...labora.com>
---
 arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index 85b045253a0e..047dfd4a1ffd 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -21,6 +21,21 @@ memory@...00000 {
 		reg = <0x00000000 0x40000000 0 0xc0000000>;
 	};
 
+	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 0x3c000000>;
+			alloc-ranges = <0 0x40000000 0 0x40000000>;
+			linux,cma-default;
+		};
+	};
+
 	pcie0_refclk: pcie0-refclk {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
-- 
2.25.1