mbox series

[0/5] arm64: allwinner: a523: Enable CPU clocks

Message ID 20250903000910.4860-1-andre.przywara@arm.com (mailing list archive)
Headers
Series arm64: allwinner: a523: Enable CPU clocks |

Message

Andre Przywara Sept. 3, 2025, 12:09 a.m. UTC 
Hi,

this series adds support for the CPU clock controller in the Allwinner
A523/A527/T527 family of SoCs.

In contrast to all earlier Allwinner SoCs, this chip features a separate
CCU for the CPU clocks (one for each of the two clusters) and the DSU
clock.

Patch 1/5 adds the binding document for the new CCU. This builds on top
of Chen-Yu's recent patch for the MCU PRCM, listed as a prerequisite
below.
Patch 2 and 3 add some slight enhancements to the sunxi-ng clock driver
framework, to generalise the update bit and allow clocks with just a
power-of-2 divider.
Patch 4 adds the actual clock driver, and patch 5 makes use of that by
adding the clock description to the SoC .dtsi.

Please have a look and test!

Cheers,
Andre

Andre Przywara (5):
  dt-bindings: clock: sun55i-a523-ccu: Add A523 CPU CCU clock controller
  clk: sunxi-ng: generalise update bit
  clk: sunxi-ng: mp: support clocks with just a shift register
  clk: sunxi-ng: add support for the A523/T527 CPU CCU
  arm64: dts: allwinner: a523: add CPU clocks

 .../clock/allwinner,sun55i-a523-ccu.yaml      |  25 ++
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi |  22 ++
 drivers/clk/sunxi-ng/Kconfig                  |   5 +
 drivers/clk/sunxi-ng/Makefile                 |   2 +
 drivers/clk/sunxi-ng/ccu-sun55i-a523-cpu.c    | 338 ++++++++++++++++++
 drivers/clk/sunxi-ng/ccu-sun55i-a523-cpu.h    |  24 ++
 drivers/clk/sunxi-ng/ccu-sun55i-a523.c        |  12 +-
 drivers/clk/sunxi-ng/ccu_common.h             |   5 +-
 drivers/clk/sunxi-ng/ccu_div.c                |   3 +-
 drivers/clk/sunxi-ng/ccu_gate.c               |   6 +-
 drivers/clk/sunxi-ng/ccu_mp.c                 |   6 +-
 drivers/clk/sunxi-ng/ccu_mp.h                 |   8 +-
 drivers/clk/sunxi-ng/ccu_mux.c                |   3 +-
 drivers/clk/sunxi-ng/ccu_nm.c                 |   1 +
 .../dt-bindings/clock/sun55i-a523-cpu-ccu.h   |  13 +
 15 files changed, 450 insertions(+), 23 deletions(-)
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun55i-a523-cpu.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun55i-a523-cpu.h
 create mode 100644 include/dt-bindings/clock/sun55i-a523-cpu-ccu.h


base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
prerequisite-patch-id: 874f647e4961983cbcfda05d2fd906256b008327