linux-kernel - [PATCH 2/2] arm64: dts: amlogic: C3: Add RTC controller node

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Message-Id: <20250717-rtc-c3-node-v1-2-4f9ae059b8e6@amlogic.com>
Date: Thu, 17 Jul 2025 17:38:38 +0800
From: Xianwei Zhao via B4 Relay <devnull+xianwei.zhao.amlogic.com@...nel.org>
To: Yiting Deng <yiting.deng@...ogic.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-amlogic@...ts.infradead.org, linux-rtc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Xianwei Zhao <xianwei.zhao@...ogic.com>
Subject: [PATCH 2/2] arm64: dts: amlogic: C3: Add RTC controller node

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

Add the RTC controller node for C3 SoC family.

Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
---
 arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
index cb9ea3ca6ee0..b81bffac7732 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
+++ b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
@@ -53,6 +53,13 @@ xtal: xtal-clk {
 		#clock-cells = <0>;
 	};
 
+	xtal_32k: xtal-clk-32k {
+		compatible = "fixed-clock";
+		clock-frequency = <32768>;
+		clock-output-names = "xtal_32k";
+		#clock-cells = <0>;
+	};
+
 	sm: secure-monitor {
 		compatible = "amlogic,meson-gxbb-sm";
 
@@ -967,6 +974,15 @@ nand: nand-controller@...00 {
 				clock-names = "core", "device";
 				status = "disabled";
 			};
+
+			rtc@...00 {
+				compatible = "amlogic,c3-rtc",
+					     "amlogic,a5-rtc";
+				reg = <0x0 0x9a000 0x0 0x38>;
+				interrupts = <GIC_SPI 131 IRQ_TYPE_EDGE_RISING>;
+				clocks = <&xtal_32k>, <&clkc_periphs CLKID_SYS_RTC>;
+				clock-names = "osc", "sys";
+			};
 		};
 
 		ethmac: ethernet@...00000 {

-- 
2.37.1