From: Chen-Yu Tsai <wens@csie.org>
Hi folks,
This is v2 of my A523 MCU PRCM and NPU support series.
Changes since v1:
- Dropped dual divider clock rate read-back fix that is already merged
- DT binding
- Moved "r-ahb" clock to the end of the list and added "r-apb0" clock
- Add NPU clk
- Move .num to after list of clks
- MCU CCU clk driver
- Added comment for "fixed" dividers in audio PLL clock
- Corrected variable names for audio PLL divider clocks
- Added comment for the reversed order of some of the DSP clock's
parents when compared to the manual
- Added comments for clocks and resets only found in the BSP driver
- Corrected register offset for i2s3-asrc and bus-mcu-pwm0 clocks
- Made "r-ahb" and new "r-apb0" external bus clocks the parents of the
bus gate clocks, with comments if guessed which one applies
- Moved .num_clks to after the list of clocks, making it obvious that
the value needs to be added if more clocks are added to the list
- MCU CCU DT node
- Enlarged MCU PRCM register range to 0x200
- Moved "r-ahb" clock to the end of the list and added "r-apb0" clock
- Link to v1
https://lore.kernel.org/all/20250830170901.1996227-1-wens@kernel.org/
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 adds the missing NPU module clock.
Patch 4 adds support for power-of-two dividers to the sunxi-ng clk
library.
Patch 5 adds a new driver for the A523 MCU PRCM CCU.
Patch 6 adds a device node for the MCU PRCM CCU.
Patch 7 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 (7):
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: 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 | 37 +-
.../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 39 ++
drivers/clk/sunxi-ng/Kconfig | 5 +
drivers/clk/sunxi-ng/Makefile | 2 +
drivers/clk/sunxi-ng/ccu-sun55i-a523-mcu.c | 469 ++++++++++++++++++
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 +
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 ++
11 files changed, 671 insertions(+), 19 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
--
2.39.5