Re: [PATCH v7 0/2] Add driver support for ESWIN eic7700 SoC reset controller

["Xuyang Dong" <dongxuyang@eswincomputing.com>]

Hi all,

  Gentle ping. Looking forward to your reply. Thank you very much!

Best regards,
Xuyang Dong

> 
> This series depends on the config option patch [1].
> 
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20250929&id=ce2d00c6e192b588ddc3d1efb72b0ea00ab5538f
> 
> Updates:
> 
>   dt-bindings: reset: eswin: Documentation for eic7700 SoC
>   v6 -> v7:
>     1. Removed vendor prefix patch dependency from cover letter, because the
>        patch was applied. Updated the link of config option patch.
>     2. Modified reg address from 0x51828000 to 0x51828300 in yaml. Beacuse the
>        SoC used the reset registers from 0x51828300.
>     3. Modified reg size from 0x80000 to 0x200. Beacuse reset registers used
>        the size of 0x200.
>     4. Modified SYSCRG_CLEAR_BOOT_INFO_OFFSET from 0x30C to 0xC. Modified
>        SYSCRG_RESET_OFFSET from 0x400 to 0x100. Because modified the 
>        reset-controller reg from 0x51828000 to 0x51828300. And the offset was 
>        also modified.
>     5. Added .reg_stride = 4 in eic7700_regmap_config. Beacuse riscv supported
>        4-byte aligned access.
>     Link to v6: https://lore.kernel.org/all/20250826110610.1338-1-dongxuyang@eswincomputing.com/
> 
>   v5 -> v6:
>     Add dependencies of vendor prefix and config option patch in cover-letter.
>     Link to v5: https://lore.kernel.org/all/20250725093249.669-1-dongxuyang@eswincomputing.com/
> 
>   v4 -> v5:
>     1. Dropped EIC7700_RESET_MAX from bindings.
>     2. Add "Reviewed-by" tag of "Krzysztof Kozlowski" for Patch 1.
>     3. Corrected the link to previous versions.
>     Link to v4: https://lore.kernel.org/all/20250715121427.1466-1-dongxuyang@eswincomputing.com/
> 
>   v3 -> v4:
>     1. Remove register offsets in dt-bindings.
>     2. The const value of "#reset-cell" was changed from 2 to 1.
>        Because the offsets were removed from dt-bindings. There are
>        only IDs. And removed the description of it.
>     3. Modify copyright year from 2024 to 2025.
>     4. Redefined the IDs in the dt-bindings and used these to build a
>        reset array in reset driver. Ensure that the reset register and
>        reset value corresponding to the IDs are correct.
>     Link to v3: https://lore.kernel.org/all/20250619075811.1230-1-dongxuyang@eswincomputing.com/
> 
>   v2 -> v3:
>     1. Drop syscon and simple-mfd from yaml and code, because these are
>        not necessary.
>     2. Update description to introduce reset controller.
>     3. Add reset control indices for dt-bindings.
>     4. Keep the register offsets in dt-bindings.
>     Link to v2: https://lore.kernel.org/all/20250619075811.1230-1-dongxuyang@eswincomputing.com/
> 
>   v1 -> v2:
>     1. Clear warnings/errors for using "make dt_binding_check".
>     2. Update example, change parent node from sys-crg to reset-controller
>        for reset yaml.
>     3. Drop the child node and add '#reset-cells' to the parent node.
>     4. Drop the description, because sys-crg block is changed to reset-
>        controller.
>     5. Change hex numbers to decimal numbers going from 0, and drop the
>        not needed hardware numbers.
>     Link to v1: https://lore.kernel.org/all/20250619075811.1230-1-dongxuyang@eswincomputing.com/
> 
>   reset: eswin: Add eic7700 reset driver
>   v6 -> v7:
>     1. Added .reg_stride = 4 in regmap_config. Because eic7700 only supported
>        4-byte register access.
>     2. Modified SYSCRG_CLEAR_BOOT_INFO_OFFSET from 0x30C to 0xC. Modified
>        SYSCRG_RESET_OFFSET from 0x400 to 0x100. Because the base address has
>        changed from 0x51828000 to 0x51828300.
> 
>   v5 -> v6:
>     1. Removed platform_set_drvdata() function.
>     2. In probe function, defined struct device *dev = &pdev->dev.
>        Modified &pdev->dev to dev.
>     Link to v5: https://lore.kernel.org/all/20250725093249.669-1-dongxuyang@eswincomputing.com/
> 
>   v4 -> v5:
>     1. The value of .max_register is 0x7fffc.
>     2. Converted "to_eswin_reset_data" from macro to inline function.
>     3. Modified EIC7700_RESET_OFFSET to EIC7700_RESET and eic7700_
>        register_offset to eic7700_reset.
>     4. Since EIC7700_RESET_MAX is dropped, used eic7700_reset[] without
>        EIC7700_RESET_MAX.
>     5. Removed function eswin_reset_set, and put regmap_clear_bits in
>        eswin_reset_assert and regmap_set_bits in eswin_reset_deassert.
>     6. Added usleep_range in function eswin_reset_reset which was missed.
>     7. Used ARRAY_SIZE(eic7700_reset) for data->rcdev.nr_resets.
>     8. Use builtin_platform_driver, because reset driver is a reset
>        controller for SoC. Removed eswin_reset_init function.
>     9. Modified eswin_reset_* to eic7700_reset_*.
>     Link to v4: https://lore.kernel.org/all/20250715121427.1466-1-dongxuyang@eswincomputing.com/
> 
>   v3 -> v4:
>     1. Add 'const' for the definition. It is 'const struct of_phandle_
>        args *reset_spec = data;'.
>     2. Modify copyright year from 2024 to 2025.
>     3. Included "eswin,eic7700-reset.h" in reset driver.
>     4. Added mapping table for reset IDs.
>     5. Removed of_xlate and idr functions as we are using IDs from DTS.
>     6. Removed .remove function.
>     Link to v3: https://lore.kernel.org/all/20250619075811.1230-1-dongxuyang@eswincomputing.com/
> 
>   v2 -> v3:
>     1. Change syscon_node_to_regmap() to MMIO regmap functions, because
>        dropped syscon.
>     2. Add BIT() in function eswin_reset_set() to shift the reset
>        control indices.
>     3. Remove forced type conversions from function eswin_reset_of_
>        xlate_lookup_id().
>     Link to v2: https://lore.kernel.org/all/20250619075811.1230-1-dongxuyang@eswincomputing.com/
> 
>   v1 -> v2:
>     1. Modify the code according to the suggestions.
>     2. Use eswin_reset_assert() and eswin_reset_deassert in function
>        eswin_reset_reset().
>     3. Place RESET_EIC7700 in Kconfig and Makefile in order.
>     4. Use dev_err_probe() in probe function.
>     Link to v1: https://lore.kernel.org/all/20250619075811.1230-1-dongxuyang@eswincomputing.com/
> 
> Xuyang Dong (2):
>   dt-bindings: reset: eswin: Documentation for eic7700 SoC
>   reset: eswin: Add eic7700 reset driver
> 
>  .../bindings/reset/eswin,eic7700-reset.yaml   |  42 ++
>  drivers/reset/Kconfig                         |  10 +
>  drivers/reset/Makefile                        |   1 +
>  drivers/reset/reset-eic7700.c                 | 429 ++++++++++++++++++
>  .../dt-bindings/reset/eswin,eic7700-reset.h   | 298 ++++++++++++
>  5 files changed, 780 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/reset/eswin,eic7700-reset.yaml
>  create mode 100644 drivers/reset/reset-eic7700.c
>  create mode 100644 include/dt-bindings/reset/eswin,eic7700-reset.h
> 
> --
> 2.43.0