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Message-Id: <20230823073330.1712721-6-pankaj.gupta@nxp.com>
Date: Wed, 23 Aug 2023 13:03:24 +0530
From: Pankaj Gupta <pankaj.gupta@....com>
To: shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
clin@...e.com, conor+dt@...nel.org, pierre.gondois@....com,
ping.bai@....com, xiaoning.wang@....com, wei.fang@....com,
peng.fan@....com, haibo.chen@....com, festevam@...il.com,
linux-imx@....com, davem@...emloft.net, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, gaurav.jain@....com,
alexander.stein@...tq-group.com, sahil.malhotra@....com,
aisheng.dong@....com, V.Sethi@....com
Cc: Pankaj Gupta <pankaj.gupta@....com>
Subject: [PATCH v5 05/11] arm64: dts: imx93-11x11-evk: reserved mem-ranges to constrain ele_fw dma-range
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@....com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@....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..0abff3a55abc 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_fw2 {
+ 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@...20000 {
+ 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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