[v3,0/8] Add Bitmain BM1880 clock driver

Message

Manivannan Sadhasivam Aug. 19, 2019, 1:01 p.m. UTC

Hello,

This patchset adds common clock driver for Bitmain BM1880 SoC clock
controller. The clock controller consists of gate, divider, mux
and pll clocks with different compositions. Hence, the driver uses
composite clock structure in place where multiple clocking units are
combined together.

This patchset also removes UART fixed clock and sources clocks from clock
controller for Sophon Edge board where the driver has been validated.

Thanks,
Mani

Changes in v3:

* Switched to clk_hw_{register/unregister} APIs
* Returned clk_hw from the in-driver registration helpers

Changes in v2:

* Converted the dt binding to YAML
* Incorporated review comments from Stephen (majority of change is switching
  to new way of specifying clk parents)

Manivannan Sadhasivam (8):
  clk: Zero init clk_init_data in helpers
  clk: Warn if clk_init_data is not zero initialized
  clk: Add clk_hw_unregister_composite helper function definition
  dt-bindings: clock: Add devicetree binding for BM1880 SoC
  arm64: dts: bitmain: Add clock controller support for BM1880 SoC
  arm64: dts: bitmain: Source common clock for UART controllers
  clk: Add common clock driver for BM1880 SoC
  MAINTAINERS: Add entry for BM1880 SoC clock driver

 .../bindings/clock/bitmain,bm1880-clk.yaml    |  83 ++
 MAINTAINERS                                   |   2 +
 .../boot/dts/bitmain/bm1880-sophon-edge.dts   |   9 -
 arch/arm64/boot/dts/bitmain/bm1880.dtsi       |  28 +
 drivers/clk/Kconfig                           |   6 +
 drivers/clk/Makefile                          |   1 +
 drivers/clk/clk-bm1880.c                      | 966 ++++++++++++++++++
 drivers/clk/clk-composite.c                   |  13 +-
 drivers/clk/clk-divider.c                     |   2 +-
 drivers/clk/clk-fixed-rate.c                  |   2 +-
 drivers/clk/clk-gate.c                        |   2 +-
 drivers/clk/clk-mux.c                         |   2 +-
 drivers/clk/clk.c                             |   8 +
 include/dt-bindings/clock/bm1880-clock.h      |  82 ++
 14 files changed, 1192 insertions(+), 14 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.yaml
 create mode 100644 drivers/clk/clk-bm1880.c
 create mode 100644 include/dt-bindings/clock/bm1880-clock.h