linux-kernel - [PATCH 7/8] arm64: dts: allwinner: a523: Add MCU PRCM CCU node

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Message-Id: <20250830170901.1996227-8-wens@kernel.org>
Date: Sun, 31 Aug 2025 01:09:00 +0800
From: Chen-Yu Tsai <wens@...nel.org>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Stephen Boyd <sboyd@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej@...nel.org>,
	Samuel Holland <samuel@...lland.org>
Cc: Andre Przywara <andre.przywara@....com>,
	linux-sunxi@...ts.linux.dev,
	linux-clk@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 7/8] arm64: dts: allwinner: a523: Add MCU PRCM CCU node

From: Chen-Yu Tsai <wens@...e.org>

Add a device node for the third supported clock controller found in the
A523 / T527 SoCs. This controller has clocks and resets for the RISC-V
MCU, and others peripherals possibly meant to operate in low power mode
driven by the MCU, such as audio interfaces, an audio DSP, and the NPU.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index 79bd9ce08c7c..b6e82d53af54 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -4,8 +4,10 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/sun6i-rtc.h>
 #include <dt-bindings/clock/sun55i-a523-ccu.h>
+#include <dt-bindings/clock/sun55i-a523-mcu-ccu.h>
 #include <dt-bindings/clock/sun55i-a523-r-ccu.h>
 #include <dt-bindings/reset/sun55i-a523-ccu.h>
+#include <dt-bindings/reset/sun55i-a523-mcu-ccu.h>
 #include <dt-bindings/reset/sun55i-a523-r-ccu.h>
 #include <dt-bindings/power/allwinner,sun55i-a523-ppu.h>
 #include <dt-bindings/power/allwinner,sun55i-a523-pck-600.h>
@@ -825,6 +827,29 @@ rtc: rtc@...0000 {
 			clock-names = "bus", "hosc", "ahb";
 			#clock-cells = <1>;
 		};
+
+		mcu_ccu: clock-controller@...2000 {
+			compatible = "allwinner,sun55i-a523-mcu-ccu";
+			reg = <0x7102000 0x164>;
+			clocks = <&osc24M>,
+				 <&rtc CLK_OSC32K>,
+				 <&rtc CLK_IOSC>,
+				 <&ccu CLK_PLL_AUDIO0_4X>,
+				 <&ccu CLK_PLL_PERIPH0_300M>,
+				 <&ccu CLK_DSP>,
+				 <&r_ccu CLK_R_AHB>,
+				 <&ccu CLK_MBUS>;
+			clock-names = "hosc",
+				      "losc",
+				      "iosc",
+				      "pll-audio0-4x",
+				      "pll-periph0-300m",
+				      "dsp",
+				      "r-ahb",
+				      "mbus";
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+		};
 	};
 
 	thermal-zones {
-- 
2.39.5