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Wed, 19 Apr 2023 12:26:47 +0000 From: Pankaj Gupta To: shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, gaurav.jain@nxp.com, sahil.malhotra@nxp.com, aisheng.dong@nxp.com, V.Sethi@nxp.com Cc: Pankaj Gupta Subject: [PATCH v2 5/7] arm64: dts: imx8ulp-evk: reserved mem-ranges to constrain ele-mu dma-range Date: Wed, 19 Apr 2023 23:25:36 +0530 Message-Id: <20230419175538.855493-6-pankaj.gupta@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230419175538.855493-1-pankaj.gupta@nxp.com> References: <20230419175538.855493-1-pankaj.gupta@nxp.com> X-ClientProxiedBy: SI2PR06CA0008.apcprd06.prod.outlook.com (2603:1096:4:186::23) To DU2PR04MB8630.eurprd04.prod.outlook.com (2603:10a6:10:2dd::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8630:EE_|PR3PR04MB7386:EE_ X-MS-Office365-Filtering-Correlation-Id: bb127714-519e-407d-f7c0-08db40d15813 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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In this patch the we are reserving 1MB of ddr memory region from the lower 32-bit range. Signed-off-by: Dong Aisheng Signed-off-by: Pankaj Gupta --- arch/arm64/boot/dts/freescale/imx8ulp-evk.dts | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts index f1c6d933a17c..d2a39e9aa951 100644 --- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts @@ -19,6 +19,17 @@ memory@80000000 { device_type = "memory"; reg = <0x0 0x80000000 0 0x80000000>; }; + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + ele_reserved: ele-reserved@90000000 { + compatible = "shared-dma-pool"; + reg = <0 0x90000000 0 0x100000>; + no-map; + }; + }; clock_ext_rmii: clock-ext-rmii { compatible = "fixed-clock"; @@ -53,6 +64,10 @@ &usdhc0 { status = "okay"; }; +&ele_mu { + memory-region = <&ele_reserved>; +}; + &fec { pinctrl-names = "default", "sleep"; pinctrl-0 = <&pinctrl_enet>;