linux-kernel - Re: [PATCH v10 0/3] Add driver support for ESWIN eic700 SoC clock controller

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Message-ID: <2931a866f5daf82e57fd0a87c04bd583658db946.camel@ziswiler.com>
Date: Fri, 06 Feb 2026 01:30:11 +0100
From: Marcel Ziswiler <marcel@...wiler.com>
To: dongxuyang@...incomputing.com, mturquette@...libre.com,
 sboyd@...nel.org, 	robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, 	linux-clk@...r.kernel.org,
 devicetree@...r.kernel.org, 	linux-kernel@...r.kernel.org,
 troy.mitchell@...ux.dev, bmasney@...hat.com
Cc: ningyu@...incomputing.com, linmin@...incomputing.com, 
	huangyifeng@...incomputing.com, pinkesh.vaghela@...fochips.com, 
	ganboing@...il.com
Subject: Re: [PATCH v10 0/3] Add driver support for ESWIN eic700 SoC clock
 controller

Hi Xuyang Dong

On Thu, 2026-02-05 at 17:33 +0800, dongxuyang@...incomputing.com wrote:
> From: Xuyang Dong <dongxuyang@...incomputing.com>

Thank you very much!

For the whole series.

Tested-by: Marcel Ziswiler <marcel@...wiler.com> # ebc77

BTW: Should anybody else want to easily test mainline on EBC77 [1].

[1] https://github.com/riscv/meta-riscv/pull/594

Cheers

Marcel

> The link [1] provides the official documentation for the EIC7700. Section 3.2
> covers the clock subsystem.
> 
> [1] https://www.sifive.com/document-file/eic7700x-datasheet
> 
> Updates:
>   Changes in v10:
>   - Updated driver file
>     - Add a private clock divider API named 'eswin_register_clkdiv' to
>       register divider clocks with private flag.
>       Define 'ESWIN_PRIV_DIV_MIN_2' private flag for registering the clock
>       dividers whose division ratio start from 2.
>       Implement the private set_rate, recalc_rate, and determine_rate accordingly.
>     - Add CLK_DIVIDER_ALLOW_ZERO flag to the clock dividers whose division
>       ratio start from 0.
>     - Replace CONFIG_ARCH_ESWIN with CONFIG_COMMON_CLK_ESWIN in the Makefile.
>     - Modify the help description of COMMON_CLK_EIC7700.
>     - Move register offset definitions from 'clk-eic7700.h' to 'clk-eic7700.c' and
>       remove the 'clk-eic7700.h'. Remove '_CTRL' from the offset names.
>     - Remove all unused headers.
>     - Use devm_platform_ioremap_resource() instead of devm_of_iomap().
>     - Export the functions from clk.c as symbols.
>     - Use readl_poll_timeout().
>     - Use 'clk_parent_data' and '.hw' instead of string parent names.
>     - Rename the header file from clk.h to common.h.
>     - Rename macros from EIC7700_* to ESWIN_* in common.h.
>     - Add a new function, 'eswin_clk_register_clks', which can register
>       divider, mux, gate, and fixed-factor clocks based on their types.
>     - Add structure 'eswin_clk_info' to manage the clocks that need to be registered
>       in a specific order.
>     - Add macros 'ESWIN_*_TYPE' to define divider, mux, gate, and fixed-factor clocks
>       with type. Add enum 'eswin_clk_type' for these types.
>     - Remove 'eswin_clk_register_mux_tbl'. Use 'eswin_clk_register_mux' to register
>       mux clocks with or without table.
>     - Add xtal24m as the parent clock of the PLL.
>     - Change 2025 to 2026 in all files.
> 
>   - Link to v9: https://lore.kernel.org/all/20251229105844.1089-1-dongxuyang@eswincomputing.com/

[snip]

> Xuyang Dong (3):
>   dt-bindings: clock: eswin: Documentation for eic7700 SoC
>   clock: eswin: Add eic7700 clock driver
>   MAINTAINERS: Add entry for ESWIN EIC7700 clock driver
> 
>  .../bindings/clock/eswin,eic7700-clock.yaml   |   46 +
>  MAINTAINERS                                   |    8 +
>  drivers/clk/Kconfig                           |    1 +
>  drivers/clk/Makefile                          |    1 +
>  drivers/clk/eswin/Kconfig                     |   15 +
>  drivers/clk/eswin/Makefile                    |    8 +
>  drivers/clk/eswin/clk-eic7700.c               | 1337 +++++++++++++++++
>  drivers/clk/eswin/clk.c                       |  575 +++++++
>  drivers/clk/eswin/common.h                    |  373 +++++
>  .../dt-bindings/clock/eswin,eic7700-clock.h   |  285 ++++
>  10 files changed, 2649 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/eswin,eic7700-clock.yaml
>  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/common.h
>  create mode 100644 include/dt-bindings/clock/eswin,eic7700-clock.h
> 
> --
> 2.34.1