From edd63e54e516b54c0b7071463d6e839445efab68 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Fri, 12 Sep 2025 01:47:09 +0800
Subject: [PATCH] arm64: dts: allwinner: a523: Add MCU PRCM CCU node

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.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://patch.msgid.link/20250911174710.3149589-7-wens@kernel.org
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index 6b6f2296bdff6..a5100e5d19aaa 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>
@@ -690,5 +692,30 @@
 			clock-names = "bus", "hosc", "ahb";
 			#clock-cells = <1>;
 		};
+
+		mcu_ccu: clock-controller@7102000 {
+			compatible = "allwinner,sun55i-a523-mcu-ccu";
+			reg = <0x7102000 0x200>;
+			clocks = <&osc24M>,
+				 <&rtc CLK_OSC32K>,
+				 <&rtc CLK_IOSC>,
+				 <&ccu CLK_PLL_AUDIO0_4X>,
+				 <&ccu CLK_PLL_PERIPH0_300M>,
+				 <&ccu CLK_DSP>,
+				 <&ccu CLK_MBUS>,
+				 <&r_ccu CLK_R_AHB>,
+				 <&r_ccu CLK_R_APB0>;
+			clock-names = "hosc",
+				      "losc",
+				      "iosc",
+				      "pll-audio0-4x",
+				      "pll-periph0-300m",
+				      "dsp",
+				      "mbus",
+				      "r-ahb",
+				      "r-apb0";
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+		};
 	};
 };
-- 
2.47.3