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[0/8] arm64: allwinner: a523: Enable MCU PRCM and NPU

Message ID 20250830170901.1996227-1-wens@kernel.org (mailing list archive)
Headers
Series arm64: allwinner: a523: Enable MCU PRCM and NPU |

Message

Chen-Yu Tsai Aug. 30, 2025, 5:08 p.m. UTC 
From: Chen-Yu Tsai <wens@csie.org>

Hi folks,

This series adds support for the MCU PRCM and the NPU.

The MCU PRCM is a Power, Reset & Clock Management block that has some
clock and reset controls for the MCU, DSP and some peripherals that the
MCU could use.

The NPU is a Vivante IP block. It is clocked from the NPU PLL from the
main clock unit, but the bus clock and reset controls lie in the MCU
PRCM.

Patch 1 adds the missing NPU module clock to the main clock control
unit's binding.

Patch 2 adds the binding for the MCU PRCM clock control unit

Patch 3 fixes clock rate readback for the new dual-divider type added
with the A523 family.

Patch 4 adds the missing NPU module clock.

Patch 5 adds support for power-of-two dividers to the sunxi-ng clk
library.

Patch 6 adds a new driver for the A523 MCU PRCM CCU.

Patch 7 adds a device node for the MCU PRCM CCU.

Patch 8 adds a device node for the NPU.

The NPU was only lightly tested: the driver correctly probes and detects
a model GC9000, revision 9003.

Please have a look. All patches will be merged through the sunxi tree.


Thanks
ChenYu


Chen-Yu Tsai (8):
  dt-bindings: clock: sun55i-a523-ccu: Add missing NPU module clock
  dt-bindings: clock: sun55i-a523-ccu: Add A523 MCU CCU clock controller
  clk: sunxi-ng: mp: Fix dual-divider clock rate readback
  clk: sunxi-ng: sun55i-a523-ccu: Add missing NPU module clock
  clk: sunxi-ng: div: support power-of-two dividers
  clk: sunxi-ng: add support for the A523/T527 MCU CCU
  arm64: dts: allwinner: a523: Add MCU PRCM CCU node
  arm64: dts: allwinner: a523: Add NPU device node

 .../clock/allwinner,sun55i-a523-ccu.yaml      |  35 +-
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi |  37 ++
 drivers/clk/sunxi-ng/Kconfig                  |   5 +
 drivers/clk/sunxi-ng/Makefile                 |   2 +
 drivers/clk/sunxi-ng/ccu-sun55i-a523-mcu.c    | 447 ++++++++++++++++++
 drivers/clk/sunxi-ng/ccu-sun55i-a523.c        |  21 +-
 drivers/clk/sunxi-ng/ccu-sun55i-a523.h        |  14 -
 drivers/clk/sunxi-ng/ccu_div.h                |  18 +
 drivers/clk/sunxi-ng/ccu_mp.c                 |   2 +-
 include/dt-bindings/clock/sun55i-a523-ccu.h   |   1 +
 .../dt-bindings/clock/sun55i-a523-mcu-ccu.h   |  54 +++
 .../dt-bindings/reset/sun55i-a523-mcu-ccu.h   |  30 ++
 12 files changed, 646 insertions(+), 20 deletions(-)
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun55i-a523-mcu.c
 delete mode 100644 drivers/clk/sunxi-ng/ccu-sun55i-a523.h
 create mode 100644 include/dt-bindings/clock/sun55i-a523-mcu-ccu.h
 create mode 100644 include/dt-bindings/reset/sun55i-a523-mcu-ccu.h