linux-kernel - [PATCH 5/5] arm64: dts: amlogic: a4: add ao secure node

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Message-Id: <20240712-soc_info-v1-5-05ba95929d5a@amlogic.com>
Date: Fri, 12 Jul 2024 14:54:50 +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 5/5] arm64: dts: amlogic: a4: 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 A4 SoC:
soc soc0: Amlogic A4 (A113L2) Revision 40:b (1:1) Detected.

Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
---
 arch/arm64/boot/dts/amlogic/amlogic-a4-common.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-a4-common.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-a4-common.dtsi
index 496c3a2bcf25..901103a288e4 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-a4-common.dtsi
+++ b/arch/arm64/boot/dts/amlogic/amlogic-a4-common.dtsi
@@ -67,6 +67,12 @@ uart_b: serial@...00 {
 				clock-names = "xtal", "pclk", "baud";
 				status = "disabled";
 			};
+
+			sec_ao: ao-secure@...20 {
+				compatible = "amlogic,meson-gx-ao-secure", "syscon";
+				reg = <0x0 0x10220 0x0 0x140>;
+				amlogic,has-chip-id;
+			};
 		};
 	};
 };

-- 
2.37.1