linux-kernel - Re: [PATCH v3 0/2] add Intel MAX 10 BMC MFD driver & hwmon sub driver

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Date:   Thu, 1 Oct 2020 08:24:04 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Xu Yilun <yilun.xu@...el.com>
Cc:     lee.jones@...aro.org, jdelvare@...e.com,
        linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org,
        trix@...hat.com, matthew.gerlach@...ux.intel.com,
        russell.h.weight@...el.com, lgoncalv@...hat.com, hao.wu@...el.com,
        mdf@...nel.org
Subject: Re: [PATCH v3 0/2] add Intel MAX 10 BMC MFD driver & hwmon sub driver

On 10/1/20 7:08 AM, Xu Yilun wrote:
> Hi Guenter,
> 
> On Wed, Sep 30, 2020 at 01:52:49PM -0700, Guenter Roeck wrote:
>> On Mon, Sep 21, 2020 at 02:17:49PM +0800, Xu Yilun wrote:
>>> I recently realized that maintainers may have trouble to apply patches to
>>> their trees if the patches depend on other being-reviewed patches. So I'm
>>> trying to wrapper the 2 patches into one patchset and let all the
>>> maintainers see the dependencies.
>>>
>>> But the patch version is then not aligned between the 2 patches. I'm not
>>> sure how to handle it. I just picked the smaller number on Subject, but
>>> you could still see their own version changes in commit message of each
>>> patch. Sorry if it makes confusing.
>>>
>>
>> If you started with separate patches, it would be much better to pick
>> the larger number, and add a note into the individual patch(es) stating
>> the reason for the gap. Everything else is highly confusing. I would not
>> be surprised if no one in the mfd world even looks at the mfd patch
>> since it went back from v6 (?) to v3 according to its subject line.
> 
> I got it. Thanks for your guide.
> 
> Fortunately, the mfd maintainer has replied and applied the mfd patch
> (the previous separate one). And I see you added a Reviewed-by for the hwmon
> patch, so I assume I don't have to do anything more, is it?
> 
Thanks for letting me know. I applied the hwmon driver.

Thanks,
Guenter

> I'll take care of the version number next time.
> 
> Thanks,
> Yilun
> 
>>
>> Thanks,
>> Guenter
>>
>>>
>>> Patch #1 implements the basic functions of the BMC chip for some Intel
>>> FPGA PCIe Acceleration Cards (PAC). The BMC is implemented using the
>>> Intel MAX 10 CPLD.
>>>
>>> This BMC chip is connected to the FPGA by a SPI bus. To provide direct
>>> register access from the FPGA, the "SPI slave to Avalon Master Bridge"
>>> (spi-avmm) IP is integrated in the chip. It converts encoded streams of
>>> bytes from the host to the internal register read/write on the Avalon
>>> bus. So This driver uses the regmap-spi-avmm for register accessing.
>>>
>>> Patch #2 adds support for the hwmon sub device in Intel MAX 10 BMC
>>>
>>>
>>> Xu Yilun (2):
>>>   mfd: intel-m10-bmc: add Intel MAX 10 BMC chip support for Intel FPGA
>>>     PAC
>>>   hwmon: intel-m10-bmc-hwmon: add hwmon support for Intel MAX 10 BMC
>>>
>>>  .../ABI/testing/sysfs-driver-intel-m10-bmc         |  15 +
>>>  Documentation/hwmon/index.rst                      |   1 +
>>>  Documentation/hwmon/intel-m10-bmc-hwmon.rst        |  78 +++++
>>>  drivers/hwmon/Kconfig                              |  11 +
>>>  drivers/hwmon/Makefile                             |   1 +
>>>  drivers/hwmon/intel-m10-bmc-hwmon.c                | 334 +++++++++++++++++++++
>>>  drivers/mfd/Kconfig                                |  13 +
>>>  drivers/mfd/Makefile                               |   2 +
>>>  drivers/mfd/intel-m10-bmc.c                        | 164 ++++++++++
>>>  include/linux/mfd/intel-m10-bmc.h                  |  65 ++++
>>>  10 files changed, 684 insertions(+)
>>>  create mode 100644 Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
>>>  create mode 100644 Documentation/hwmon/intel-m10-bmc-hwmon.rst
>>>  create mode 100644 drivers/hwmon/intel-m10-bmc-hwmon.c
>>>  create mode 100644 drivers/mfd/intel-m10-bmc.c
>>>  create mode 100644 include/linux/mfd/intel-m10-bmc.h
>>>
>>> -- 
>>> 2.7.4
>>>