Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Pankaj Gupta <pankaj.gupta@nxp.com>
To:     shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de,
        clin@suse.com, conor+dt@kernel.org, pierre.gondois@arm.com,
        ping.bai@nxp.com, xiaoning.wang@nxp.com, wei.fang@nxp.com,
        peng.fan@nxp.com, haibo.chen@nxp.com, festevam@gmail.com,
        linux-imx@nxp.com, davem@davemloft.net, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org,
        linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, gaurav.jain@nxp.com,
        alexander.stein@ew.tq-group.com, sahil.malhotra@nxp.com,
        aisheng.dong@nxp.com, V.Sethi@nxp.com
Cc:     Pankaj Gupta <pankaj.gupta@nxp.com>
Subject: [PATCH v4 5/7] arm64: dts: imx93-11x11-evk: reserved mem-ranges to constrain ele_fw dma-range
Date:   Wed, 12 Jul 2023 17:42:17 +0530
Message-Id: <20230712121219.2654234-6-pankaj.gupta@nxp.com>
In-Reply-To: <20230712121219.2654234-1-pankaj.gupta@nxp.com>
References: <20230712121219.2654234-1-pankaj.gupta@nxp.com>
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?OBN4Z7WhEiNaooj+jKCuyzo76TteL5VsCU2rFiIegfwUJ4VdGSQniUcnIrEk?=
 =?us-ascii?Q?lqXtFc3kvH3ZD7S1JNK6iQ8bbZ1XHhHxhQ2aykc0JIe1kLwl0uIOwijhEZWT?=
 =?us-ascii?Q?Yow8gOdgZcDanWpbvrTRv002S5vAHYOzuXejHiWf4W+Y4EJfyaVxsOe4wtuH?=
 =?us-ascii?Q?hVri0Hyu9ny1wpi3HYvITEPAYqi+denYR1fCAnpKlylUz88VO9ozkBtIu7zJ?=
 =?us-ascii?Q?auNwQnvu3itLKHoPlROb3FRTun0IcPsdB4ae1HLWvW47LnEEKFCxjgQ7nxRO?=
 =?us-ascii?Q?oxfuS0kiAkatHC5Z/RtssGoQ2x+jlDzEycm5J9hpiElfPxPyVFC+ind5Olrd?=
 =?us-ascii?Q?kJAdqiuRKSduwUauF9azdb21jm7yS1B9IYI9s5XnR8B7seiXMsbo6u3+N+kZ?=
 =?us-ascii?Q?EC0CumLsdplIPx2P5uhIJaqvzFkrw+v+oDO9GBtdpxLSK8y8t0HSjZWEqlUl?=
 =?us-ascii?Q?jowjd8HQ7eFB9RiNXzvA+5++QqTy1CIczTNEziLzEYZkOZmRq9OLv2PqGtv3?=
 =?us-ascii?Q?y3e7NjitIVTM28RROdsvRhLQPNDDwIy0mvP8OcIQjOYAjRafp45wXtzH09l8?=
 =?us-ascii?Q?kP24hyyMYXu4igKRtjyYQuIiYjOi8I9jgO+l82Z800yKhERYkm0h80CD0+gG?=
 =?us-ascii?Q?knSUlHv/LQO65K2Ba1ANwOtYhaH6yV9TqFC2w2/tz5O0fyieYpfUXdkDIRGs?=
 =?us-ascii?Q?+Fq/5530i6H5RnXTGOell05Uy004zDtGi+ANO8+o6SMnaWV5mo7XIR/p5FeA?=
 =?us-ascii?Q?D1DLdhXHzLFCIYOMoo9QsY7SZHXswMEWsMS7fM5yqeyHaurs1hv1K0ozU9NK?=
 =?us-ascii?Q?tMo818EMN5756eCYJrhoEEe6WOqpgv7RnI6gCDxBvHZ5uRs/jWrInxPg0ngL?=
 =?us-ascii?Q?3Pqsb4mHqmp+gAQ0s4geFE+axC9BeO76U0ZhFPPEEzTw+3k69weWvCIFxcbd?=
 =?us-ascii?Q?1N2fRK3SRK4TO/NE0h7i4yYX85j37uKbV8yp5GzHN7WLI00H2cfoIonhiZBi?=
 =?us-ascii?Q?1zWKejLROqcm8Uo6/XOjpirCHu53l4i5kSTd4MhFr7hQkQTt3o3E5h6f55IJ?=
 =?us-ascii?Q?dHeaCit/z1g3NRW00wCxURpXfdUxx0M+mKsEG/LSnUYmjZZqIrd0EpMK+2IU?=
 =?us-ascii?Q?2lvEv/KJIWXeSs+dhTG2WXRh6hOcwwf5Mx6EaQ/PRhiRejzm87HBEsP0/oZa?=
 =?us-ascii?Q?IzcjTMGxsy5Q3IU9wVdbJeJ2Pq7IymbAwyDZbiv9jAPIJjEcLa//2qe4V8b+?=
 =?us-ascii?Q?yMGkCD+KH3uZ0N12YQGWBl+WWi3oN+YE29QbpwmzUPWN9vgLsSeizLGXmE23?=
 =?us-ascii?Q?eriKFXBMVwYMLLrW2u4r03Cdb29o7cjE9qYJdjI3B40E/Tsw91+8J0tqLEVA?=
 =?us-ascii?Q?lb/503pp0Fej8VCMgDhpHp6vx/nHHFMloyJkpcyewTmMfXVpA4qXLRjVuOrA?=
 =?us-ascii?Q?j/buNTdJdHkJydJMDRwVendEEnCWH2EgK0VV1M3G9p7MQ3i2sArBXffWREvD?=
 =?us-ascii?Q?bcK9djO0I4nTiPRpl1Uu4RSfFBMkiTsH3pYHY7M4CRsC8p2qRXbtypJ8Hycg?=
 =?us-ascii?Q?MhiZMswp4K1bNr0O+j8PG7Nyradl8Prg+DNyO7EP?=
X-OriginatorOrg: nxp.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 8ebc1544-8899-4299-7313-08db82d16909
X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB8638.eurprd04.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jul 2023 12:13:32.6563
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: A2L/q8K6tIFDcdhlWBRV8RlPg306QjJBGP2mDcxgoTIV6jbmXiJbaW9pRkgcs4uaVpSXmdpHIlAEs2izVbOAdQ==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: GVXPR04MB9877
X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED,
        RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE,
        URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

EdgeLock Enclave are has a hardware limitation of restricted access
to the DDR memory range:
- 0x80000000  0x9FFFFFFF

ELE-MU driver requireis 1MB of memory. In this patch the we are reserving
1MB of ddr memory region from the lower 32-bit range.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
index c50f46f06f62..950fe3e58e59 100644
--- a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
@@ -7,6 +7,10 @@
 
 #include "imx93.dtsi"
 
+&ele_fw {
+	memory-region = <&ele_reserved>;
+};
+
 / {
 	model = "NXP i.MX93 11X11 EVK board";
 	compatible = "fsl,imx93-11x11-evk", "fsl,imx93";
@@ -22,6 +26,17 @@ reg_vref_1v8: regulator-adc-vref {
 		regulator-max-microvolt = <1800000>;
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		ele_reserved: ele-reserved@a4120000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0xa4120000 0 0x100000>;
+			no-map;
+		};
+	};
+
 	reg_usdhc2_vmmc: regulator-usdhc2 {
 		compatible = "regulator-fixed";
 		pinctrl-names = "default";
-- 
2.34.1