[PATCH v4 0/3] Add driver support for ESWIN eic700 SoC clock controller

[dongxuyang@eswincomputing.com]

From: Xuyang Dong <dongxuyang@eswincomputing.com>

This series depends on the vendor prefix patch [1] and config option patch [2].

[1] https://lore.kernel.org/all/20250616112316.3833343-4-pinkesh.vaghela@einfochips.com/
[2] https://lore.kernel.org/all/20250616112316.3833343-3-pinkesh.vaghela@einfochips.com/

Updates:

  Changes in v4:
  - Updated YAML file
    - Changed name from cpu-default-frequency to cpu-default-freq-hz.
    - Dropped $ref of cpu-default-frequency.
    - Added cpu-default-frequency for required.
    - Removed cpu-default-frequency in updated file, because there was no
      need to add cpu-default-frequency.
    - Moved DIVIDER to DIV.
    - Arranged the IDs in order.
    - Dropped EIC7700_NR_CLKS.
    - Removed dt-bindings eswin,eic7700-clock.h. Because IDs was not used,
      and used clock device nodes.
    - According to the updated driver codes, the YAML has been updated.
  - Updated driver file
    - Remove undocumented parameters "cpu_no_boost_1_6ghz" and
      "cpu-default-frequency".
    - Modified the comment and used the correct Linux coding style.
    - Removed codes of voltage, because it was not the clock driver.
    - Updated the formula of clock frequency calculation. Removed the logic
      that only used register selection.
    - Used CLK_OF_DECLARE() to register clocks. Registered pll-clock,
      mux-clock, divider-clock, and gate-clock in clk-eic7700.c.
      The specific implementation of clock registration was in clk.c.
    - Added eic7700-clocks.dtsi.
    - Moved device information to DTS. Put all clocks' node in the
      eic7700-clocks.dtsi.

  - Link to v3: https://lore.kernel.org/all/20250624103212.287-1-dongxuyang@eswincomputing.com/

  Changes in v3:
  - Update example, drop child node and add '#clock-cells' to the parent
    node.
  - Change parent node from sys-crg to clock-controller for this yaml.
  - Drop "syscon", "simple-mfd" to clear warnings/errors by using "make
    dt_binding_check". And these are not necessary.
  - Add "cpu-default-frequency" definition in yaml for "undocumented ABI".
  - Drop Reviewed-by, this is misunderstanding. We have not received such
    an email.
  - Link to v2: https://lore.kernel.org/all/20250523090747.1830-1-dongxuyang@eswincomputing.com/

  Changes in v2:
  - Update example, drop child node.
  - Clear warnings/errors for using "make dt_binding_check".
  - Change to the correct format.
  - Drop some non-stanard code.
  - Use dev_err_probe() in probe functions.
  - Link to v1: https://lore.kernel.org/all/20250514002233.187-1-dongxuyang@eswincomputing.com/

Xuyang Dong (3):
  clock: eswin: Documentation for eic7700 SoC
  clock: eswin: Add eic7700 clock driver
  riscv: dts: eswin: Add clock driver support

 .../bindings/clock/eswin,eic7700-clock.yaml   |  381 +++
 arch/riscv/boot/dts/eswin/eic7700-clocks.dtsi | 2283 +++++++++++++++++
 drivers/clk/Kconfig                           |    1 +
 drivers/clk/Makefile                          |    1 +
 drivers/clk/eswin/Kconfig                     |   10 +
 drivers/clk/eswin/Makefile                    |    8 +
 drivers/clk/eswin/clk-eic7700.c               |   44 +
 drivers/clk/eswin/clk.c                       |  734 ++++++
 drivers/clk/eswin/clk.h                       |   69 +
 9 files changed, 3531 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/eswin,eic7700-clock.yaml
 create mode 100644 arch/riscv/boot/dts/eswin/eic7700-clocks.dtsi
 create mode 100644 drivers/clk/eswin/Kconfig
 create mode 100644 drivers/clk/eswin/Makefile
 create mode 100644 drivers/clk/eswin/clk-eic7700.c
 create mode 100644 drivers/clk/eswin/clk.c
 create mode 100644 drivers/clk/eswin/clk.h

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2.17.1