Re: [PATCH V5 0/5] Add rtc driver for the Loongson family chips

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Hi Alexandre:

Gentle ping.
The dt-binding part of the patchset looks good now, do you have any
more comments on the driver part?

Thanks.
Binbin







On Fri, Jun 2, 2023 at 5:51 PM Binbin Zhou <zhoubinbin@xxxxxxxxxxx> wrote:
>
> Hi all:
>
> The initial DT-base ls2x rtc driver was written by Wang Xuerui, He has
> released five versions of patchset before, and all related mail records
> are shown below if you are interested:
>
> https://lore.kernel.org/all/?q=ls2x-rtc
>
> In this series of patches, based on the code above, I have added the
> following support:
>
> 1. Add ACPI-related support, as Loongson-3A5000 + LS7A is now ACPI-base
>    by default under LoongArch architecture;
> 2. Add rtc alarm/walarm related functions;
> 3. Merge LS1X rtc and LS2X rtc into a unified rtc-loongson driver.
>
> I have tested on Loongson-3A5000LA+LS7A1000/LS7A2000, Loongson-2K1000LA,
> Loongson-2K0500 and Loongson-2K2000(ACPI/DT).
>
> Thanks to everyone for reviewing and testing the code.
>
> -------
> v5:
> patch(1/5)
>   - The reason why ls2x can be removed directly is explained in the
>     commit message;
>   - Use fallback compatible;
>     Thanks to all who participated in the fallback compatible discussion.
> patch(3/5)
>   - Since ls1b and ls1c have different register definitions, we'd better
>     distinguish them with different
>     configurations(ls1b_rtc_config/ls1c_rtc_config);
>   - Due to the use of fallback compatible, the redundant compatible is
>     removed. We can see the full list of supported chips in dt-binding..
>
> v4:
> https://lore.kernel.org/linux-rtc/cover.1684983279.git.zhoubinbin@xxxxxxxxxxx/
>
> - Rebase on the top of rtc-next;
> - Drop defconfig-related patches;
> patch(1/5)
>   - New patch, Loongson RTC bindings have been rewritten and we have
>     dropped the wildcard (ls2x) in compatible.
>     Thanks to Krzysztof for your comments;
> patch(2/5)
>   - New patch, drop the ls1x rtc driver;
> patch(3/5)
>   - Clear RTC_FEATURE_UPDATE_INTERRUPT bit, for the rtc does not support
>     UIE;
>   - Add LS2K2000 support(DT/ACPI);
>   - Merge ls1x support and name the driver rtc-loongson;
>     Thanks to Jiaxun for his comments and Keguang for his assistance in
> testing.
>
> v3:
> https://lore.kernel.org/linux-rtc/cover.1681370153.git.zhoubinbin@xxxxxxxxxxx/
>
> patch(2/7):
>  - Check patchset with "checkpatch.pl --strict";
>  - Drop static inline functions which are used only once, such as
>    ls2x_rtc_regs_to_time;
>  - Remove the suruct ls2x_rtc_regs and regmap_bulk_xxx() is used to read
>    and write rtc registers;
>  - Clear the RTC wakeup interrupt manually;
>  - Enable the RTC in set_time() and check in read_time();
>  - device_get_match_data() is used to get ls2x_pm_offset, for LS2k1000
>    has the different value;
>  - Remove some inexact CONFIG_ACPI.
>
> v2:
> 1. Rebased on top of latest loongarch-next;
> 2. Add interrupt descriptions to the ls2k and ls7a DTS files to avoid
> errors when the driver gets the IRQ number, Thanks to Qing Zhang for
> testing;
> 3. Remove some inexact CONFIG_ACPI.
>
> Thanks.
>
> Binbin Zhou (5):
>   dt-bindings: rtc: Remove the LS2X from the trivial RTCs
>   rtc: Remove the Loongson-1 RTC driver
>   rtc: Add rtc driver for the Loongson family chips
>   MIPS: Loongson64: DTS: Add RTC support to LS7A PCH
>   MIPS: Loongson64: DTS: Add RTC support to Loongson-2K1000
>
>  .../devicetree/bindings/rtc/loongson,rtc.yaml |  57 +++
>  .../devicetree/bindings/rtc/trivial-rtc.yaml  |   2 -
>  .../boot/dts/loongson/loongson64-2k1000.dtsi  |   7 +
>  arch/mips/boot/dts/loongson/ls7a-pch.dtsi     |   7 +
>  drivers/rtc/Kconfig                           |  23 +-
>  drivers/rtc/Makefile                          |   2 +-
>  drivers/rtc/rtc-loongson.c                    | 397 ++++++++++++++++++
>  drivers/rtc/rtc-ls1x.c                        | 192 ---------
>  8 files changed, 482 insertions(+), 205 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/rtc/loongson,rtc.yaml
>  create mode 100644 drivers/rtc/rtc-loongson.c
>  delete mode 100644 drivers/rtc/rtc-ls1x.c
>
> --
> 2.39.1
>
>




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