Merge tag 'sunxi-clk-for-6.18' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-allwinner

Pull Allwinner clk driver updates from Chen-Yu Tsai:

In this cycle support for power-of-two single divider clocks was added.
This covers some of the clocks found in the A523 MCU PRCM clock and
reset controller, for which support was added as well.

Besides the new controller, a missing clock was added for the A523's
main clock controller. The RTC clock driver gained specifics for the
A523's RTC block for tweaking the clock rate of the internal oscillator
to get it closer to what the RTC needs.

* tag 'sunxi-clk-for-6.18' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  clk: sunxi-ng: add support for the A523/T527 MCU CCU
  clk: sunxi-ng: div: support power-of-two dividers
  clk: sunxi-ng: sun55i-a523-ccu: Add missing NPU module clock
  dt-bindings: clock: sun55i-a523-ccu: Add A523 MCU CCU clock controller
  dt-bindings: clock: sun55i-a523-ccu: Add missing NPU module clock
  clk: sunxi-ng: sun6i-rtc: Add A523 specifics

11 files changed, 643 insertions, 19 deletions

diff --git a/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml b/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml
index f5f62e9a10a1..58be701a720e 100644
--- a/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml
+++ b/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml
@@ -19,6 +19,7 @@ properties:
   compatible:
     enum:
       - allwinner,sun55i-a523-ccu
+      - allwinner,sun55i-a523-mcu-ccu
       - allwinner,sun55i-a523-r-ccu
 
   reg:
@@ -26,11 +27,11 @@ properties:
 
   clocks:
     minItems: 4
-    maxItems: 5
+    maxItems: 9
 
   clock-names:
     minItems: 4
-    maxItems: 5
+    maxItems: 9
 
 required:
   - "#clock-cells"
@@ -67,6 +68,38 @@ allOf:
       properties:
         compatible:
           enum:
+            - allwinner,sun55i-a523-mcu-ccu
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: High Frequency Oscillator (usually at 24MHz)
+            - description: Low Frequency Oscillator (usually at 32kHz)
+            - description: Internal Oscillator
+            - description: Audio PLL (4x)
+            - description: Peripherals PLL 0 (300 MHz output)
+            - description: DSP module clock
+            - description: MBUS clock
+            - description: PRCM AHB clock
+            - description: PRCM APB0 clock
+
+        clock-names:
+          items:
+            - const: hosc
+            - const: losc
+            - const: iosc
+            - const: pll-audio0-4x
+            - const: pll-periph0-300m
+            - const: dsp
+            - const: mbus
+            - const: r-ahb
+            - const: r-apb0
+
+  - if:
+      properties:
+        compatible:
+          enum:
             - allwinner,sun55i-a523-r-ccu
 
     then:
diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig
index 8896fd052ef1..6af2d020e03e 100644
--- a/drivers/clk/sunxi-ng/Kconfig
+++ b/drivers/clk/sunxi-ng/Kconfig
@@ -57,6 +57,11 @@ config SUN55I_A523_CCU
 	default ARCH_SUNXI
 	depends on ARM64 || COMPILE_TEST
 
+config SUN55I_A523_MCU_CCU
+	tristate "Support for the Allwinner A523/T527 MCU CCU"
+	default ARCH_SUNXI
+	depends on ARM64 || COMPILE_TEST
+
 config SUN55I_A523_R_CCU
 	tristate "Support for the Allwinner A523/T527 PRCM CCU"
 	default ARCH_SUNXI
diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
index 82e471036de6..a1c4087d7241 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_SUN50I_H6_CCU)	+= sun50i-h6-ccu.o
 obj-$(CONFIG_SUN50I_H6_R_CCU)	+= sun50i-h6-r-ccu.o
 obj-$(CONFIG_SUN50I_H616_CCU)	+= sun50i-h616-ccu.o
 obj-$(CONFIG_SUN55I_A523_CCU)	+= sun55i-a523-ccu.o
+obj-$(CONFIG_SUN55I_A523_MCU_CCU)	+= sun55i-a523-mcu-ccu.o
 obj-$(CONFIG_SUN55I_A523_R_CCU)	+= sun55i-a523-r-ccu.o
 obj-$(CONFIG_SUN4I_A10_CCU)	+= sun4i-a10-ccu.o
 obj-$(CONFIG_SUN5I_CCU)		+= sun5i-ccu.o
@@ -61,6 +62,7 @@ sun50i-h6-ccu-y			+= ccu-sun50i-h6.o
 sun50i-h6-r-ccu-y		+= ccu-sun50i-h6-r.o
 sun50i-h616-ccu-y		+= ccu-sun50i-h616.o
 sun55i-a523-ccu-y		+= ccu-sun55i-a523.o
+sun55i-a523-mcu-ccu-y		+= ccu-sun55i-a523-mcu.o
 sun55i-a523-r-ccu-y		+= ccu-sun55i-a523-r.o
 sun4i-a10-ccu-y			+= ccu-sun4i-a10.o
 sun5i-ccu-y			+= ccu-sun5i.o
diff --git a/drivers/clk/sunxi-ng/ccu-sun55i-a523-mcu.c b/drivers/clk/sunxi-ng/ccu-sun55i-a523-mcu.c
new file mode 100644
index 000000000000..197844f0fe4e
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun55i-a523-mcu.c
@@ -0,0 +1,469 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Chen-Yu Tsai <wens@csie.org>
+ *
+ * Based on the A523 CCU driver:
+ *   Copyright (C) 2023-2024 Arm Ltd.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <dt-bindings/clock/sun55i-a523-mcu-ccu.h>
+#include <dt-bindings/reset/sun55i-a523-mcu-ccu.h>
+
+#include "ccu_common.h"
+#include "ccu_reset.h"
+
+#include "ccu_div.h"
+#include "ccu_gate.h"
+#include "ccu_mp.h"
+#include "ccu_mult.h"
+#include "ccu_nm.h"
+
+static const struct clk_parent_data osc24M[] = {
+	{ .fw_name = "hosc" }
+};
+
+static const struct clk_parent_data ahb[] = {
+	{ .fw_name = "r-ahb" }
+};
+
+static const struct clk_parent_data apb[] = {
+	{ .fw_name = "r-apb0" }
+};
+
+#define SUN55I_A523_PLL_AUDIO1_REG	0x00c
+static struct ccu_sdm_setting pll_audio1_sdm_table[] = {
+	{ .rate = 2167603200, .pattern = 0xa000a234, .m = 1, .n = 90 }, /* div2->22.5792 */
+	{ .rate = 2359296000, .pattern = 0xa0009ba6, .m = 1, .n = 98 }, /* div2->24.576 */
+	{ .rate = 1806336000, .pattern = 0xa000872b, .m = 1, .n = 75 }, /* div5->22.576 */
+};
+
+static struct ccu_nm pll_audio1_clk = {
+	.enable		= BIT(27),
+	.lock		= BIT(28),
+	.n		= _SUNXI_CCU_MULT_MIN(8, 8, 11),
+	.m		= _SUNXI_CCU_DIV(1, 1),
+	.sdm		= _SUNXI_CCU_SDM(pll_audio1_sdm_table, BIT(24),
+					 0x010, BIT(31)),
+	.min_rate	= 180000000U,
+	.max_rate	= 3500000000U,
+	.common		= {
+		.reg		= 0x00c,
+		.features	= CCU_FEATURE_SIGMA_DELTA_MOD,
+		.hw.init	= CLK_HW_INIT_PARENTS_DATA("pll-audio1",
+							   osc24M, &ccu_nm_ops,
+							   CLK_SET_RATE_GATE),
+	},
+};
+
+/*
+ * /2 and /5 dividers are actually programmable, but we just use the
+ * values from the BSP, since the audio PLL only needs to provide a
+ * couple clock rates. This also matches the names given in the manual.
+ */
+static const struct clk_hw *pll_audio1_div_parents[] = { &pll_audio1_clk.common.hw };
+static CLK_FIXED_FACTOR_HWS(pll_audio1_div2_clk, "pll-audio1-div2",
+			    pll_audio1_div_parents, 2, 1,
+			    CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HWS(pll_audio1_div5_clk, "pll-audio1-div5",
+			    pll_audio1_div_parents, 5, 1,
+			    CLK_SET_RATE_PARENT);
+
+static SUNXI_CCU_M_WITH_GATE(audio_out_clk, "audio-out",
+			     "pll-audio1-div2", 0x01c,
+			     0, 5, BIT(31), CLK_SET_RATE_PARENT);
+
+static const struct clk_parent_data dsp_parents[] = {
+	{ .fw_name = "hosc" },
+	{ .fw_name = "losc" },
+	{ .fw_name = "iosc" },
+	/*
+	 * The order of the following two parent is from the BSP code. It is
+	 * the opposite in the manual. Testing with the DSP is required to
+	 * figure out the real order.
+	 */
+	{ .hw = &pll_audio1_div5_clk.hw },
+	{ .hw = &pll_audio1_div2_clk.hw },
+	{ .fw_name = "dsp" },
+};
+static SUNXI_CCU_M_DATA_WITH_MUX_GATE(dsp_clk, "mcu-dsp", dsp_parents, 0x0020,
+				      0, 5,	/* M */
+				      24, 3,	/* mux */
+				      BIT(31),	/* gate */
+				      0);
+
+static const struct clk_parent_data i2s_parents[] = {
+	{ .fw_name = "pll-audio0-4x" },
+	{ .hw = &pll_audio1_div2_clk.hw },
+	{ .hw = &pll_audio1_div5_clk.hw },
+};
+
+static SUNXI_CCU_DUALDIV_MUX_GATE(i2s0_clk, "i2s0", i2s_parents, 0x02c,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+static SUNXI_CCU_DUALDIV_MUX_GATE(i2s1_clk, "i2s1", i2s_parents, 0x030,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+static SUNXI_CCU_DUALDIV_MUX_GATE(i2s2_clk, "i2s2", i2s_parents, 0x034,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+static SUNXI_CCU_DUALDIV_MUX_GATE(i2s3_clk, "i2s3", i2s_parents, 0x038,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+
+static const struct clk_parent_data i2s3_asrc_parents[] = {
+	{ .fw_name = "pll-periph0-300m" },
+	{ .hw = &pll_audio1_div2_clk.hw },
+	{ .hw = &pll_audio1_div5_clk.hw },
+};
+static SUNXI_CCU_DUALDIV_MUX_GATE(i2s3_asrc_clk, "i2s3-asrc",
+				  i2s3_asrc_parents, 0x03c,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+
+static SUNXI_CCU_GATE_DATA(bus_i2s0_clk, "bus-i2s0", apb, 0x040, BIT(0), 0);
+static SUNXI_CCU_GATE_DATA(bus_i2s1_clk, "bus-i2s1", apb, 0x040, BIT(1), 0);
+static SUNXI_CCU_GATE_DATA(bus_i2s2_clk, "bus-i2s2", apb, 0x040, BIT(2), 0);
+static SUNXI_CCU_GATE_DATA(bus_i2s3_clk, "bus-i2s3", apb, 0x040, BIT(3), 0);
+
+static const struct clk_parent_data audio_parents[] = {
+	{ .fw_name = "pll-audio0-4x" },
+	{ .hw = &pll_audio1_div2_clk.hw },
+	{ .hw = &pll_audio1_div5_clk.hw },
+};
+static SUNXI_CCU_DUALDIV_MUX_GATE(spdif_tx_clk, "spdif-tx",
+				  audio_parents, 0x044,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+static SUNXI_CCU_DUALDIV_MUX_GATE(spdif_rx_clk, "spdif-rx",
+				  i2s3_asrc_parents, 0x048,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+
+static SUNXI_CCU_GATE_DATA(bus_spdif_clk, "bus-spdif", apb, 0x04c, BIT(0), 0);
+
+static SUNXI_CCU_DUALDIV_MUX_GATE(dmic_clk, "dmic", audio_parents, 0x050,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+
+static SUNXI_CCU_GATE_DATA(bus_dmic_clk, "bus-dmic", apb, 0x054, BIT(0), 0);
+
+static SUNXI_CCU_DUALDIV_MUX_GATE(audio_dac_clk, "audio-dac",
+				  audio_parents, 0x058,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+static SUNXI_CCU_DUALDIV_MUX_GATE(audio_adc_clk, "audio-adc",
+				  audio_parents, 0x05c,
+				  0, 5,		/* M */
+				  5, 5,		/* P */
+				  24, 3,	/* mux */
+				  BIT(31),	/* gate */
+				  CLK_SET_RATE_PARENT);
+
+static SUNXI_CCU_GATE_DATA(bus_audio_codec_clk, "bus-audio-codec",
+			   apb, 0x060, BIT(0), 0);
+
+static SUNXI_CCU_GATE_DATA(bus_dsp_msgbox_clk, "bus-dsp-msgbox",
+			   ahb, 0x068, BIT(0), 0);
+static SUNXI_CCU_GATE_DATA(bus_dsp_cfg_clk, "bus-dsp-cfg",
+			   apb, 0x06c, BIT(0), 0);
+
+static SUNXI_CCU_GATE_DATA(bus_npu_hclk, "bus-npu-hclk", ahb, 0x070, BIT(1), 0);
+static SUNXI_CCU_GATE_DATA(bus_npu_aclk, "bus-npu-aclk", ahb, 0x070, BIT(2), 0);
+
+static const struct clk_parent_data timer_parents[] = {
+	{ .fw_name = "hosc" },
+	{ .fw_name = "losc" },
+	{ .fw_name = "iosc" },
+	{ .fw_name = "r-ahb" }
+};
+static SUNXI_CCU_P_DATA_WITH_MUX_GATE(mcu_timer0_clk, "mcu-timer0", timer_parents,
+				      0x074,
+				      1, 3,	/* P */
+				      4, 2,	/* mux */
+				      BIT(0),	/* gate */
+				      0);
+static SUNXI_CCU_P_DATA_WITH_MUX_GATE(mcu_timer1_clk, "mcu-timer1", timer_parents,
+				      0x078,
+				      1, 3,	/* P */
+				      4, 2,	/* mux */
+				      BIT(0),	/* gate */
+				      0);
+static SUNXI_CCU_P_DATA_WITH_MUX_GATE(mcu_timer2_clk, "mcu-timer2", timer_parents,
+				      0x07c,
+				      1, 3,	/* P */
+				      4, 2,	/* mux */
+				      BIT(0),	/* gate */
+				      0);
+static SUNXI_CCU_P_DATA_WITH_MUX_GATE(mcu_timer3_clk, "mcu-timer3", timer_parents,
+				      0x080,
+				      1, 3,	/* P */
+				      4, 2,	/* mux */
+				      BIT(0),	/* gate */
+				      0);
+static SUNXI_CCU_P_DATA_WITH_MUX_GATE(mcu_timer4_clk, "mcu-timer4", timer_parents,
+				      0x084,
+				      1, 3,	/* P */
+				      4, 2,	/* mux */
+				      BIT(0),	/* gate */
+				      0);
+static SUNXI_CCU_P_DATA_WITH_MUX_GATE(mcu_timer5_clk, "mcu-timer5", timer_parents,
+				      0x088,
+				      1, 3,	/* P */
+				      4, 2,	/* mux */
+				      BIT(0),	/* gate */
+				      0);
+static SUNXI_CCU_GATE_DATA(bus_mcu_timer_clk, "bus-mcu-timer", ahb, 0x08c, BIT(0), 0);
+static SUNXI_CCU_GATE_DATA(bus_mcu_dma_clk, "bus-mcu-dma", ahb, 0x104, BIT(0), 0);
+/* tzma* only found in BSP code. */
+static SUNXI_CCU_GATE_DATA(tzma0_clk, "tzma0", ahb, 0x108, BIT(0), 0);
+static SUNXI_CCU_GATE_DATA(tzma1_clk, "tzma1", ahb, 0x10c, BIT(0), 0);
+/* parent is a guess as this block is not shown in the system bus tree diagram */
+static SUNXI_CCU_GATE_DATA(bus_pubsram_clk, "bus-pubsram", ahb, 0x114, BIT(0), 0);
+
+/*
+ * user manual has "mbus" clock as parent of both clocks below,
+ * but this makes more sense, since BSP MCU DMA controller has
+ * reference to both of them, likely needing both enabled.
+ */
+static SUNXI_CCU_GATE_FW(mbus_mcu_clk, "mbus-mcu", "mbus", 0x11c, BIT(1), 0);
+static SUNXI_CCU_GATE_HW(mbus_mcu_dma_clk, "mbus-mcu-dma",
+			 &mbus_mcu_clk.common.hw, 0x11c, BIT(0), 0);
+
+static const struct clk_parent_data riscv_pwm_parents[] = {
+	{ .fw_name = "hosc" },
+	{ .fw_name = "losc" },
+	{ .fw_name = "iosc" },
+};
+
+static SUNXI_CCU_MUX_DATA_WITH_GATE(riscv_clk, "riscv",
+				    riscv_pwm_parents, 0x120,
+				    27, 3, BIT(31), 0);
+/* Parents are guesses as these two blocks are not shown in the system bus tree diagram */
+static SUNXI_CCU_GATE_DATA(bus_riscv_cfg_clk, "bus-riscv-cfg", ahb,
+			   0x124, BIT(0), 0);
+static SUNXI_CCU_GATE_DATA(bus_riscv_msgbox_clk, "bus-riscv-msgbox", ahb,
+			   0x128, BIT(0), 0);
+
+static SUNXI_CCU_MUX_DATA_WITH_GATE(mcu_pwm0_clk, "mcu-pwm0",
+				    riscv_pwm_parents, 0x130,
+				    24, 3, BIT(31), 0);
+static SUNXI_CCU_GATE_DATA(bus_mcu_pwm0_clk, "bus-mcu-pwm0", apb,
+			   0x134, BIT(0), 0);
+
+/*
+ * Contains all clocks that are controlled by a hardware register. They
+ * have a (sunxi) .common member, which needs to be initialised by the common
+ * sunxi CCU code, to be filled with the MMIO base address and the shared lock.
+ */
+static struct ccu_common *sun55i_a523_mcu_ccu_clks[] = {
+	&pll_audio1_clk.common,
+	&audio_out_clk.common,
+	&dsp_clk.common,
+	&i2s0_clk.common,
+	&i2s1_clk.common,
+	&i2s2_clk.common,
+	&i2s3_clk.common,
+	&i2s3_asrc_clk.common,
+	&bus_i2s0_clk.common,
+	&bus_i2s1_clk.common,
+	&bus_i2s2_clk.common,
+	&bus_i2s3_clk.common,
+	&spdif_tx_clk.common,
+	&spdif_rx_clk.common,
+	&bus_spdif_clk.common,
+	&dmic_clk.common,
+	&bus_dmic_clk.common,
+	&audio_dac_clk.common,
+	&audio_adc_clk.common,
+	&bus_audio_codec_clk.common,
+	&bus_dsp_msgbox_clk.common,
+	&bus_dsp_cfg_clk.common,
+	&bus_npu_aclk.common,
+	&bus_npu_hclk.common,
+	&mcu_timer0_clk.common,
+	&mcu_timer1_clk.common,
+	&mcu_timer2_clk.common,
+	&mcu_timer3_clk.common,
+	&mcu_timer4_clk.common,
+	&mcu_timer5_clk.common,
+	&bus_mcu_timer_clk.common,
+	&bus_mcu_dma_clk.common,
+	&tzma0_clk.common,
+	&tzma1_clk.common,
+	&bus_pubsram_clk.common,
+	&mbus_mcu_dma_clk.common,
+	&mbus_mcu_clk.common,
+	&riscv_clk.common,
+	&bus_riscv_cfg_clk.common,
+	&bus_riscv_msgbox_clk.common,
+	&mcu_pwm0_clk.common,
+	&bus_mcu_pwm0_clk.common,
+};
+
+static struct clk_hw_onecell_data sun55i_a523_mcu_hw_clks = {
+	.hws	= {
+		[CLK_MCU_PLL_AUDIO1]		= &pll_audio1_clk.common.hw,
+		[CLK_MCU_PLL_AUDIO1_DIV2]	= &pll_audio1_div2_clk.hw,
+		[CLK_MCU_PLL_AUDIO1_DIV5]	= &pll_audio1_div5_clk.hw,
+		[CLK_MCU_AUDIO_OUT]		= &audio_out_clk.common.hw,
+		[CLK_MCU_DSP]			= &dsp_clk.common.hw,
+		[CLK_MCU_I2S0]			= &i2s0_clk.common.hw,
+		[CLK_MCU_I2S1]			= &i2s1_clk.common.hw,
+		[CLK_MCU_I2S2]			= &i2s2_clk.common.hw,
+		[CLK_MCU_I2S3]			= &i2s3_clk.common.hw,
+		[CLK_MCU_I2S3_ASRC]		= &i2s3_asrc_clk.common.hw,
+		[CLK_BUS_MCU_I2S0]		= &bus_i2s0_clk.common.hw,
+		[CLK_BUS_MCU_I2S1]		= &bus_i2s1_clk.common.hw,
+		[CLK_BUS_MCU_I2S2]		= &bus_i2s2_clk.common.hw,
+		[CLK_BUS_MCU_I2S3]		= &bus_i2s3_clk.common.hw,
+		[CLK_MCU_SPDIF_TX]		= &spdif_tx_clk.common.hw,
+		[CLK_MCU_SPDIF_RX]		= &spdif_rx_clk.common.hw,
+		[CLK_BUS_MCU_SPDIF]		= &bus_spdif_clk.common.hw,
+		[CLK_MCU_DMIC]			= &dmic_clk.common.hw,
+		[CLK_BUS_MCU_DMIC]		= &bus_dmic_clk.common.hw,
+		[CLK_MCU_AUDIO_CODEC_DAC]	= &audio_dac_clk.common.hw,
+		[CLK_MCU_AUDIO_CODEC_ADC]	= &audio_adc_clk.common.hw,
+		[CLK_BUS_MCU_AUDIO_CODEC]	= &bus_audio_codec_clk.common.hw,
+		[CLK_BUS_MCU_DSP_MSGBOX]	= &bus_dsp_msgbox_clk.common.hw,
+		[CLK_BUS_MCU_DSP_CFG]		= &bus_dsp_cfg_clk.common.hw,
+		[CLK_BUS_MCU_NPU_HCLK]		= &bus_npu_hclk.common.hw,
+		[CLK_BUS_MCU_NPU_ACLK]		= &bus_npu_aclk.common.hw,
+		[CLK_MCU_TIMER0]		= &mcu_timer0_clk.common.hw,
+		[CLK_MCU_TIMER1]		= &mcu_timer1_clk.common.hw,
+		[CLK_MCU_TIMER2]		= &mcu_timer2_clk.common.hw,
+		[CLK_MCU_TIMER3]		= &mcu_timer3_clk.common.hw,
+		[CLK_MCU_TIMER4]		= &mcu_timer4_clk.common.hw,
+		[CLK_MCU_TIMER5]		= &mcu_timer5_clk.common.hw,
+		[CLK_BUS_MCU_TIMER]		= &bus_mcu_timer_clk.common.hw,
+		[CLK_BUS_MCU_DMA]		= &bus_mcu_dma_clk.common.hw,
+		[CLK_MCU_TZMA0]			= &tzma0_clk.common.hw,
+		[CLK_MCU_TZMA1]			= &tzma1_clk.common.hw,
+		[CLK_BUS_MCU_PUBSRAM]		= &bus_pubsram_clk.common.hw,
+		[CLK_MCU_MBUS_DMA]		= &mbus_mcu_dma_clk.common.hw,
+		[CLK_MCU_MBUS]			= &mbus_mcu_clk.common.hw,
+		[CLK_MCU_RISCV]			= &riscv_clk.common.hw,
+		[CLK_BUS_MCU_RISCV_CFG]		= &bus_riscv_cfg_clk.common.hw,
+		[CLK_BUS_MCU_RISCV_MSGBOX]	= &bus_riscv_msgbox_clk.common.hw,
+		[CLK_MCU_PWM0]			= &mcu_pwm0_clk.common.hw,
+		[CLK_BUS_MCU_PWM0]		= &bus_mcu_pwm0_clk.common.hw,
+	},
+	.num	= CLK_BUS_MCU_PWM0 + 1,
+};
+
+static struct ccu_reset_map sun55i_a523_mcu_ccu_resets[] = {
+	[RST_BUS_MCU_I2S0]		= { 0x0040, BIT(16) },
+	[RST_BUS_MCU_I2S1]		= { 0x0040, BIT(17) },
+	[RST_BUS_MCU_I2S2]		= { 0x0040, BIT(18) },
+	[RST_BUS_MCU_I2S3]		= { 0x0040, BIT(19) },
+	[RST_BUS_MCU_SPDIF]		= { 0x004c, BIT(16) },
+	[RST_BUS_MCU_DMIC]		= { 0x0054, BIT(16) },
+	[RST_BUS_MCU_AUDIO_CODEC]	= { 0x0060, BIT(16) },
+	[RST_BUS_MCU_DSP_MSGBOX]	= { 0x0068, BIT(16) },
+	[RST_BUS_MCU_DSP_CFG]		= { 0x006c, BIT(16) },
+	[RST_BUS_MCU_NPU]		= { 0x0070, BIT(16) },
+	[RST_BUS_MCU_TIMER]		= { 0x008c, BIT(16) },
+	/* dsp and dsp_debug resets only found in BSP code. */
+	[RST_BUS_MCU_DSP_DEBUG]		= { 0x0100, BIT(16) },
+	[RST_BUS_MCU_DSP]		= { 0x0100, BIT(17) },
+	[RST_BUS_MCU_DMA]		= { 0x0104, BIT(16) },
+	[RST_BUS_MCU_PUBSRAM]		= { 0x0114, BIT(16) },
+	[RST_BUS_MCU_RISCV_CFG]		= { 0x0124, BIT(16) },
+	[RST_BUS_MCU_RISCV_DEBUG]	= { 0x0124, BIT(17) },
+	[RST_BUS_MCU_RISCV_CORE]	= { 0x0124, BIT(18) },
+	[RST_BUS_MCU_RISCV_MSGBOX]	= { 0x0128, BIT(16) },
+	[RST_BUS_MCU_PWM0]		= { 0x0134, BIT(16) },
+};
+
+static const struct sunxi_ccu_desc sun55i_a523_mcu_ccu_desc = {
+	.ccu_clks	= sun55i_a523_mcu_ccu_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sun55i_a523_mcu_ccu_clks),
+
+	.hw_clks	= &sun55i_a523_mcu_hw_clks,
+
+	.resets		= sun55i_a523_mcu_ccu_resets,
+	.num_resets	= ARRAY_SIZE(sun55i_a523_mcu_ccu_resets),
+};
+
+static int sun55i_a523_mcu_ccu_probe(struct platform_device *pdev)
+{
+	void __iomem *reg;
+	u32 val;
+	int ret;
+
+	reg = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
+
+	val = readl(reg + SUN55I_A523_PLL_AUDIO1_REG);
+
+	/*
+	 * The PLL clock code does not model all bits, for instance it does
+	 * not support a separate enable and gate bit. We present the
+	 * gate bit(27) as the enable bit, but then have to set the
+	 * PLL Enable, LDO Enable, and Lock Enable bits on all PLLs here.
+	 */
+	val |= BIT(31) | BIT(30) | BIT(29);
+
+	/* Enforce p1 = 5, p0 = 2 (the default) for PLL_AUDIO1 */
+	val &= ~(GENMASK(22, 20) | GENMASK(18, 16));
+	val |= (4 << 20) | (1 << 16);
+
+	writel(val, reg + SUN55I_A523_PLL_AUDIO1_REG);
+
+	ret = devm_sunxi_ccu_probe(&pdev->dev, reg, &sun55i_a523_mcu_ccu_desc);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static const struct of_device_id sun55i_a523_mcu_ccu_ids[] = {
+	{ .compatible = "allwinner,sun55i-a523-mcu-ccu" },
+	{ }
+};
+
+static struct platform_driver sun55i_a523_mcu_ccu_driver = {
+	.probe	= sun55i_a523_mcu_ccu_probe,
+	.driver	= {
+		.name			= "sun55i-a523-mcu-ccu",
+		.suppress_bind_attrs	= true,
+		.of_match_table		= sun55i_a523_mcu_ccu_ids,
+	},
+};
+module_platform_driver(sun55i_a523_mcu_ccu_driver);
+
+MODULE_IMPORT_NS("SUNXI_CCU");
+MODULE_DESCRIPTION("Support for the Allwinner A523 MCU CCU");
+MODULE_LICENSE("GPL");
diff --git a/drivers/clk/sunxi-ng/ccu-sun55i-a523.c b/drivers/clk/sunxi-ng/ccu-sun55i-a523.c
index 1a9a1cb869e2..acb532f8361b 100644
--- a/drivers/clk/sunxi-ng/ccu-sun55i-a523.c
+++ b/drivers/clk/sunxi-ng/ccu-sun55i-a523.c
@@ -11,6 +11,9 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 
+#include <dt-bindings/clock/sun55i-a523-ccu.h>
+#include <dt-bindings/reset/sun55i-a523-ccu.h>
+
 #include "../clk.h"
 
 #include "ccu_common.h"
@@ -25,8 +28,6 @@
 #include "ccu_nkmp.h"
 #include "ccu_nm.h"
 
-#include "ccu-sun55i-a523.h"
-
 /*
  * The 24 MHz oscillator, the root of most of the clock tree.
  * .fw_name is the string used in the DT "clock-names" property, used to
@@ -486,6 +487,18 @@ static SUNXI_CCU_M_HW_WITH_MUX_GATE(ve_clk, "ve", ve_parents, 0x690,
 
 static SUNXI_CCU_GATE_HWS(bus_ve_clk, "bus-ve", ahb_hws, 0x69c, BIT(0), 0);
 
+static const struct clk_hw *npu_parents[] = {
+	&pll_periph0_480M_clk.common.hw,
+	&pll_periph0_600M_clk.hw,
+	&pll_periph0_800M_clk.common.hw,
+	&pll_npu_2x_clk.hw,
+};
+static SUNXI_CCU_M_HW_WITH_MUX_GATE(npu_clk, "npu", npu_parents, 0x6e0,
+				    0, 5,	/* M */
+				    24, 3,	/* mux */
+				    BIT(31),	/* gate */
+				    CLK_SET_RATE_PARENT);
+
 static SUNXI_CCU_GATE_HWS(bus_dma_clk, "bus-dma", ahb_hws, 0x70c, BIT(0), 0);
 
 static SUNXI_CCU_GATE_HWS(bus_msgbox_clk, "bus-msgbox", ahb_hws, 0x71c,
@@ -1217,6 +1230,7 @@ static struct ccu_common *sun55i_a523_ccu_clks[] = {
 	&bus_ce_sys_clk.common,
 	&ve_clk.common,
 	&bus_ve_clk.common,
+	&npu_clk.common,
 	&bus_dma_clk.common,
 	&bus_msgbox_clk.common,
 	&bus_spinlock_clk.common,
@@ -1343,7 +1357,6 @@ static struct ccu_common *sun55i_a523_ccu_clks[] = {
 };
 
 static struct clk_hw_onecell_data sun55i_a523_hw_clks = {
-	.num	= CLK_NUMBER,
 	.hws	= {
 		[CLK_PLL_DDR0]		= &pll_ddr_clk.common.hw,
 		[CLK_PLL_PERIPH0_4X]	= &pll_periph0_4x_clk.common.hw,
@@ -1524,7 +1537,9 @@ static struct clk_hw_onecell_data sun55i_a523_hw_clks = {
 		[CLK_FANOUT0]		= &fanout0_clk.common.hw,
 		[CLK_FANOUT1]		= &fanout1_clk.common.hw,
 		[CLK_FANOUT2]		= &fanout2_clk.common.hw,
+		[CLK_NPU]		= &npu_clk.common.hw,
 	},
+	.num	= CLK_NPU + 1,
 };
 
 static struct ccu_reset_map sun55i_a523_ccu_resets[] = {
diff --git a/drivers/clk/sunxi-ng/ccu-sun55i-a523.h b/drivers/clk/sunxi-ng/ccu-sun55i-a523.h
deleted file mode 100644
index fc8dd42f1b47..000000000000
--- a/drivers/clk/sunxi-ng/ccu-sun55i-a523.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright 2024 Arm Ltd.
- */
-
-#ifndef _CCU_SUN55I_A523_H
-#define _CCU_SUN55I_A523_H
-
-#include <dt-bindings/clock/sun55i-a523-ccu.h>
-#include <dt-bindings/reset/sun55i-a523-ccu.h>
-
-#define CLK_NUMBER	(CLK_FANOUT2 + 1)
-
-#endif /* _CCU_SUN55I_A523_H */
diff --git a/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c b/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
index 0536e880b80f..f6bfeba009e8 100644
--- a/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
+++ b/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
@@ -325,6 +325,13 @@ static const struct sun6i_rtc_match_data sun50i_r329_rtc_ccu_data = {
 	.osc32k_fanout_nparents	= ARRAY_SIZE(sun50i_r329_osc32k_fanout_parents),
 };
 
+static const struct sun6i_rtc_match_data sun55i_a523_rtc_ccu_data = {
+	.have_ext_osc32k	= true,
+	.have_iosc_calibration	= true,
+	.osc32k_fanout_parents	= sun50i_r329_osc32k_fanout_parents,
+	.osc32k_fanout_nparents	= ARRAY_SIZE(sun50i_r329_osc32k_fanout_parents),
+};
+
 static const struct of_device_id sun6i_rtc_ccu_match[] = {
 	{
 		.compatible	= "allwinner,sun50i-h616-rtc",
@@ -334,6 +341,10 @@ static const struct of_device_id sun6i_rtc_ccu_match[] = {
 		.compatible	= "allwinner,sun50i-r329-rtc",
 		.data		= &sun50i_r329_rtc_ccu_data,
 	},
+	{
+		.compatible	= "allwinner,sun55i-a523-rtc",
+		.data		= &sun55i_a523_rtc_ccu_data,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, sun6i_rtc_ccu_match);
diff --git a/drivers/clk/sunxi-ng/ccu_div.h b/drivers/clk/sunxi-ng/ccu_div.h
index 90d49ee8e0cc..be00b3277e97 100644
--- a/drivers/clk/sunxi-ng/ccu_div.h
+++ b/drivers/clk/sunxi-ng/ccu_div.h
@@ -274,6 +274,24 @@ struct ccu_div {
 	SUNXI_CCU_M_HWS_WITH_GATE(_struct, _name, _parent, _reg,	\
 				  _mshift, _mwidth, 0, _flags)
 
+#define SUNXI_CCU_P_DATA_WITH_MUX_GATE(_struct, _name, _parents, _reg,	\
+				       _mshift, _mwidth,		\
+				       _muxshift, _muxwidth,		\
+				       _gate, _flags)			\
+	struct ccu_div _struct = {					\
+		.enable	= _gate,					\
+		.div	= _SUNXI_CCU_DIV_FLAGS(_mshift, _mwidth,	\
+					       CLK_DIVIDER_POWER_OF_TWO), \
+		.mux	= _SUNXI_CCU_MUX(_muxshift, _muxwidth),		\
+		.common	= {						\
+			.reg		= _reg,				\
+			.hw.init	= CLK_HW_INIT_PARENTS_DATA(_name, \
+								   _parents, \
+								   &ccu_div_ops, \
+								   _flags), \
+		},							\
+	}
+
 static inline struct ccu_div *hw_to_ccu_div(struct clk_hw *hw)
 {
 	struct ccu_common *common = hw_to_ccu_common(hw);
diff --git a/include/dt-bindings/clock/sun55i-a523-ccu.h b/include/dt-bindings/clock/sun55i-a523-ccu.h
index c8259ac5ada7..54808fcfd556 100644
--- a/include/dt-bindings/clock/sun55i-a523-ccu.h
+++ b/include/dt-bindings/clock/sun55i-a523-ccu.h
@@ -185,5 +185,6 @@
 #define CLK_FANOUT0		176
 #define CLK_FANOUT1		177
 #define CLK_FANOUT2		178
+#define CLK_NPU			179
 
 #endif /* _DT_BINDINGS_CLK_SUN55I_A523_CCU_H_ */
diff --git a/include/dt-bindings/clock/sun55i-a523-mcu-ccu.h b/include/dt-bindings/clock/sun55i-a523-mcu-ccu.h
new file mode 100644
index 000000000000..6efc6bc7e11a
--- /dev/null
+++ b/include/dt-bindings/clock/sun55i-a523-mcu-ccu.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR MIT) */
+/*
+ * Copyright (C) 2025 Chen-Yu Tsai <wens@csie.org>
+ */
+
+#ifndef _DT_BINDINGS_CLK_SUN55I_A523_MCU_CCU_H_
+#define _DT_BINDINGS_CLK_SUN55I_A523_MCU_CCU_H_
+
+#define CLK_MCU_PLL_AUDIO1	0
+#define CLK_MCU_PLL_AUDIO1_DIV2	1
+#define CLK_MCU_PLL_AUDIO1_DIV5	2
+#define CLK_MCU_AUDIO_OUT	3
+#define CLK_MCU_DSP		4
+#define CLK_MCU_I2S0		5
+#define CLK_MCU_I2S1		6
+#define CLK_MCU_I2S2		7
+#define CLK_MCU_I2S3		8
+#define CLK_MCU_I2S3_ASRC	9
+#define CLK_BUS_MCU_I2S0	10
+#define CLK_BUS_MCU_I2S1	11
+#define CLK_BUS_MCU_I2S2	12
+#define CLK_BUS_MCU_I2S3	13
+#define CLK_MCU_SPDIF_TX	14
+#define CLK_MCU_SPDIF_RX	15
+#define CLK_BUS_MCU_SPDIF	16
+#define CLK_MCU_DMIC		17
+#define CLK_BUS_MCU_DMIC	18
+#define CLK_MCU_AUDIO_CODEC_DAC	19
+#define CLK_MCU_AUDIO_CODEC_ADC	20
+#define CLK_BUS_MCU_AUDIO_CODEC	21
+#define CLK_BUS_MCU_DSP_MSGBOX	22
+#define CLK_BUS_MCU_DSP_CFG	23
+#define CLK_BUS_MCU_NPU_HCLK	24
+#define CLK_BUS_MCU_NPU_ACLK	25
+#define CLK_MCU_TIMER0		26
+#define CLK_MCU_TIMER1		27
+#define CLK_MCU_TIMER2		28
+#define CLK_MCU_TIMER3		29
+#define CLK_MCU_TIMER4		30
+#define CLK_MCU_TIMER5		31
+#define CLK_BUS_MCU_TIMER	32
+#define CLK_BUS_MCU_DMA		33
+#define CLK_MCU_TZMA0		34
+#define CLK_MCU_TZMA1		35
+#define CLK_BUS_MCU_PUBSRAM	36
+#define CLK_MCU_MBUS_DMA	37
+#define CLK_MCU_MBUS		38
+#define CLK_MCU_RISCV		39
+#define CLK_BUS_MCU_RISCV_CFG	40
+#define CLK_BUS_MCU_RISCV_MSGBOX	41
+#define CLK_MCU_PWM0		42
+#define CLK_BUS_MCU_PWM0	43
+
+#endif /* _DT_BINDINGS_CLK_SUN55I_A523_MCU_CCU_H_ */
diff --git a/include/dt-bindings/reset/sun55i-a523-mcu-ccu.h b/include/dt-bindings/reset/sun55i-a523-mcu-ccu.h
new file mode 100644
index 000000000000..a89a0b44f08b
--- /dev/null
+++ b/include/dt-bindings/reset/sun55i-a523-mcu-ccu.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR MIT) */
+/*
+ * Copyright (C) 2025 Chen-Yu Tsai <wens@csie.org>
+ */
+
+#ifndef _DT_BINDINGS_RST_SUN55I_A523_MCU_CCU_H_
+#define _DT_BINDINGS_RST_SUN55I_A523_MCU_CCU_H_
+
+#define RST_BUS_MCU_I2S0		0
+#define RST_BUS_MCU_I2S1		1
+#define RST_BUS_MCU_I2S2		2
+#define RST_BUS_MCU_I2S3		3
+#define RST_BUS_MCU_SPDIF		4
+#define RST_BUS_MCU_DMIC		5
+#define RST_BUS_MCU_AUDIO_CODEC		6
+#define RST_BUS_MCU_DSP_MSGBOX		7
+#define RST_BUS_MCU_DSP_CFG		8
+#define RST_BUS_MCU_NPU			9
+#define RST_BUS_MCU_TIMER		10
+#define RST_BUS_MCU_DSP_DEBUG		11
+#define RST_BUS_MCU_DSP			12
+#define RST_BUS_MCU_DMA			13
+#define RST_BUS_MCU_PUBSRAM		14
+#define RST_BUS_MCU_RISCV_CFG		15
+#define RST_BUS_MCU_RISCV_DEBUG		16
+#define RST_BUS_MCU_RISCV_CORE		17
+#define RST_BUS_MCU_RISCV_MSGBOX	18
+#define RST_BUS_MCU_PWM0		19
+
+#endif /* _DT_BINDINGS_RST_SUN55I_A523_MCU_CCU_H_ */