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From: Pankaj Gupta <pankaj.gupta@nxp.com>
To: shawnguo@kernel.org, s.hauer@pengutronix.de,
	kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, gaurav.jain@nxp.com,
	sahil.malhotra@nxp.com, aisheng.dong@nxp.com, V.Sethi@nxp.com
Cc: Pankaj Gupta <pankaj.gupta@nxp.com>
Subject: [NXP ELE-MUAP 3/7] arm64: dts: imx93-11x11-evk: reserved mem-ranges to constrain ele-mu dma-range
Date: Tue, 11 Apr 2023 21:55:32 +0530	[thread overview]
Message-ID: <20230411162536.30604-4-pankaj.gupta@nxp.com> (raw)
In-Reply-To: <20230411162536.30604-1-pankaj.gupta@nxp.com>

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 477c146f985c..2e2c26e38af0 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_mu {
+	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


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WARNING: multiple messages have this Message-ID (diff)
From: Pankaj Gupta <pankaj.gupta@nxp.com>
To: shawnguo@kernel.org, s.hauer@pengutronix.de,
	kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, gaurav.jain@nxp.com,
	sahil.malhotra@nxp.com, aisheng.dong@nxp.com, V.Sethi@nxp.com
Cc: Pankaj Gupta <pankaj.gupta@nxp.com>
Subject: [NXP ELE-MUAP 3/7] arm64: dts: imx93-11x11-evk: reserved mem-ranges to constrain ele-mu dma-range
Date: Tue, 11 Apr 2023 21:55:32 +0530	[thread overview]
Message-ID: <20230411162536.30604-4-pankaj.gupta@nxp.com> (raw)
In-Reply-To: <20230411162536.30604-1-pankaj.gupta@nxp.com>

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 477c146f985c..2e2c26e38af0 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_mu {
+	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


  parent reply	other threads:[~2023-04-11 15:27 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-11 16:25 [NXP ELE-MUAP Driver 0/7] *** firmware: imx: NXP Edgelock Enclave MUAP Driver *** Pankaj Gupta
2023-04-11 16:25 ` Pankaj Gupta
2023-04-11 16:25 ` [NXP ELE-MUAP 1/7] doc: device tree binding addition for ele MU Pankaj Gupta
2023-04-11 16:25   ` Pankaj Gupta
2023-04-12  8:00   ` Peng Fan
2023-04-12  8:00     ` Peng Fan
2023-04-12  8:01   ` Krzysztof Kozlowski
2023-04-12  8:01     ` Krzysztof Kozlowski
2023-04-11 16:25 ` [NXP ELE-MUAP 2/7] arm64: dts: imx93-11x11-evk: added ele-mu Pankaj Gupta
2023-04-11 16:25   ` Pankaj Gupta
2023-04-11 16:25 ` Pankaj Gupta [this message]
2023-04-11 16:25   ` [NXP ELE-MUAP 3/7] arm64: dts: imx93-11x11-evk: reserved mem-ranges to constrain ele-mu dma-range Pankaj Gupta
2023-04-11 16:25 ` [NXP ELE-MUAP 4/7] arm64: dts: imx8ulp-evk: added ele-mu Pankaj Gupta
2023-04-11 16:25   ` Pankaj Gupta
2023-04-11 16:25 ` [NXP ELE-MUAP 5/7] arm64: dts: imx8ulp-evk: reserved mem-ranges to constrain ele-mu dma-range Pankaj Gupta
2023-04-11 16:25   ` Pankaj Gupta
2023-04-11 16:25 ` [NXP ELE-MUAP 6/7] firmware: imx: add ELE MU driver support Pankaj Gupta
2023-04-11 16:25   ` Pankaj Gupta
2023-04-11 17:31   ` kernel test robot
2023-04-11 17:31     ` kernel test robot
2023-04-12  1:11   ` kernel test robot
2023-04-12  1:11     ` kernel test robot
2023-04-11 16:25 ` [NXP ELE-MUAP 7/7] MAINTAINERS: Added maintainer details Pankaj Gupta
2023-04-11 16:25   ` Pankaj Gupta

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