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From:   Dmitry Rokosov <DDRokosov@sberdevices.ru>
To:     "robh+dt@kernel.org" <robh+dt@kernel.org>,
        "krzysztof.kozlowski+dt@linaro.org" 
        <krzysztof.kozlowski+dt@linaro.org>,
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        "khilman@baylibre.com" <khilman@baylibre.com>,
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        "martin.blumenstingl@googlemail.com" 
        <martin.blumenstingl@googlemail.com>
CC:     "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "linux-amlogic@lists.infradead.org" 
        <linux-amlogic@lists.infradead.org>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        kernel <kernel@sberdevices.ru>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Dmitry Rokosov <DDRokosov@sberdevices.ru>
Subject: [PATCH v1] arm64: dts: meson-axg: reserve memory region for Amlogic
 TrustOS
Thread-Topic: [PATCH v1] arm64: dts: meson-axg: reserve memory region for
 Amlogic TrustOS
Thread-Index: AQHYqCKmlgn31IcXkUK0U/+U7ZMA5w==
Date:   Thu, 4 Aug 2022 16:52:59 +0000
Message-ID: <20220804165317.29086-1-ddrokosov@sberdevices.ru>
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For the all AXG SoC based boards, which run Amlogic vendor ATF and
TrustOS this memory region 0x5300000-0x6300000 is reserved by BL32,
so tag it as no-map in the kernel iomem.

Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
---
 arch/arm64/boot/dts/amlogic/meson-axg.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi b/arch/arm64/boot/d=
ts/amlogic/meson-axg.dtsi
index 3f5254eeb47b..1fa0d3805969 100644
--- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
@@ -142,6 +142,12 @@ secmon_reserved: secmon@5000000 {
 			reg =3D <0x0 0x05000000 0x0 0x300000>;
 			no-map;
 		};
+
+		/* 16 MiB reserved for Amlogic Trust OS (BL32) */
+		secos_reserved: secos@5300000 {
+			reg =3D <0x0 0x05300000 0x0 0x1000000>;
+			no-map;
+		};
 	};
=20
 	scpi {
--=20
2.36.0