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Message-Id: <20250830170901.1996227-3-wens@kernel.org>
Date: Sun, 31 Aug 2025 01:08:55 +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 2/8] dt-bindings: clock: sun55i-a523-ccu: Add A523 MCU CCU clock controller
From: Chen-Yu Tsai <wens@...e.org>
There are four clock controllers in the A523 SoC. The existing binding
already covers two of them that are critical for basic operation. The
remaining ones are the MCU clock controller and CPU PLL clock
controller.
Add a description for the MCU CCU. This unit controls and provides
clocks to the MCU (RISC-V) subsystem and peripherals meant to operate
under low power conditions.
Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
.../clock/allwinner,sun55i-a523-ccu.yaml | 35 +++++++++++-
.../dt-bindings/clock/sun55i-a523-mcu-ccu.h | 54 +++++++++++++++++++
.../dt-bindings/reset/sun55i-a523-mcu-ccu.h | 30 +++++++++++
3 files changed, 117 insertions(+), 2 deletions(-)
create mode 100644 include/dt-bindings/clock/sun55i-a523-mcu-ccu.h
create mode 100644 include/dt-bindings/reset/sun55i-a523-mcu-ccu.h
diff --git a/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml b/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml
index f5f62e9a10a1..1dbd92febc47 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: 8
clock-names:
minItems: 4
- maxItems: 5
+ maxItems: 8
required:
- "#clock-cells"
@@ -63,6 +64,36 @@ allOf:
- const: iosc
- const: losc-fanout
+ - if:
+ 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: PRCM AHB clock
+ - description: MBUS clock
+
+ clock-names:
+ items:
+ - const: hosc
+ - const: losc
+ - const: iosc
+ - const: pll-audio0-4x
+ - const: pll-periph0-300m
+ - const: dsp
+ - const: r-ahb
+ - const: mbus
+
- if:
properties:
compatible:
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@...e.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@...e.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_ */
--
2.39.5
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