Add imx8ulp clock & reset driver support

This patchset adds the clock & reset driver support for i.MX8ULP.
For some of the PCC slot, As there is a SWRST control bit share
the same pcc register for peripheral reset ccontrol. To simplify
the case, register the pcc reset controller driver when pcc
clock driver is registered.

Patch 1/9 for the dt-bindings part is send out for review previously
with the dts patchset:
https://patchwork.kernel.org/project/linux-arm-kernel/cov...

Shawn suggests to send out the clock driver part firstly, so this
patch is included in this patchset for now.

v3 changes:
  - split the clock dt schema file into two file, one for pcc, one for cgc

v2 changes:
  - remove the useless clocks & clock-names from the dt-binding doc
  - remove the redundant fixed clock register.

Anson Huang (1):
  clk: imx: disable i.mx7ulp composite clock during initialization

Jacky Bai (8):
  dt-bindings: clock: Add imx8ulp clock support
  clk: imx: Update the pllv4 to support imx8ulp
  clk: imx: Update the compsite driver to support imx8ulp
  clk: imx: Add 'CLK_SET_RATE_NO_REPARENT' for composite-7ulp
  clk: imx: disable the pfd when set pfdv2 clock rate
  clk: imx: Update the pfdv2 for 8ulp specific support
  clk: imx: Add clock driver for imx8ulp
  clk: imx: Add the pcc reset controller support on imx8ulp

 .../bindings/clock/imx8ulp-cgc-clock.yaml     |  43 ++
 .../bindings/clock/imx8ulp-pcc-clock.yaml     |  50 ++
 drivers/clk/imx/Kconfig                       |   6 +
 drivers/clk/imx/Makefile                      |   2 +
 drivers/clk/imx/clk-composite-7ulp.c          |  87 ++-
 drivers/clk/imx/clk-imx7ulp.c                 |  20 +-
 drivers/clk/imx/clk-imx8ulp.c                 | 569 ++++++++++++++++++
 drivers/clk/imx/clk-pfdv2.c                   |  22 +-
 drivers/clk/imx/clk-pllv4.c                   |  34 +-
 drivers/clk/imx/clk.h                         |  24 +-
 include/dt-bindings/clock/imx8ulp-clock.h     | 258 ++++++++
 include/dt-bindings/reset/imx8ulp-pcc-reset.h |  59 ++
 12 files changed, 1142 insertions(+), 32 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/imx8ulp-cgc-clock.yaml
 create mode 100644 Documentation/devicetree/bindings/clock/imx8ulp-pcc-clock.yaml
 create mode 100644 drivers/clk/imx/clk-imx8ulp.c
 create mode 100644 include/dt-bindings/clock/imx8ulp-clock.h
 create mode 100644 include/dt-bindings/reset/imx8ulp-pcc-reset.h

-- 
2.26.2