linux-kernel - [PATCH v2 4/6] arm64: dts: amlogic: c3: add ao secure node

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Message-Id: <20240715-soc_info-v2-4-3836c8cc27a5@amlogic.com>
Date: Mon, 15 Jul 2024 16:59:22 +0800
From: Xianwei Zhao via B4 Relay <devnull+xianwei.zhao.amlogic.com@...nel.org>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Xianwei Zhao <xianwei.zhao@...ogic.com>
Subject: [PATCH v2 4/6] arm64: dts: amlogic: c3: add ao secure node

From: Xianwei Zhao <xianwei.zhao@...ogic.com>

Add node for board info registers, which allows getting SoC family and
board revision.

For example, with MESON_GX_SOCINFO config enabled we can get the
following information for board with Amlogic C3 SoC:
soc soc0: Amlogic C3 (C308L) Revision 3d:a (1:1) Detected

Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
---
 arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
index f8fb060c49ae..c913dd409e64 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
+++ b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
@@ -129,6 +129,13 @@ uart_b: serial@...00 {
 				clock-names = "xtal", "pclk", "baud";
 			};
 
+			sec_ao: ao-secure@...20 {
+				compatible = "amlogic,c3-ao-secure",
+					     "amlogic,meson-gx-ao-secure",
+					     "syscon";
+				reg = <0x0 0x10220 0x0 0x140>;
+				amlogic,has-chip-id;
+			};
 		};
 	};
 };

-- 
2.37.1