linux-kernel - Re: [PATCH v3 1/2] drivers: rtc: add max313xx series rtc driver

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Date:   Tue, 14 Feb 2023 22:36:51 +0000
From:   Chris Packham <Chris.Packham@...iedtelesis.co.nz>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
CC:     Ibrahim Tilki <Ibrahim.Tilki@...log.com>,
        "a.zummo@...ertech.it" <a.zummo@...ertech.it>,
        "jdelvare@...e.com" <jdelvare@...e.com>,
        "linux@...ck-us.net" <linux@...ck-us.net>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "linux-rtc@...r.kernel.org" <linux-rtc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-hwmon@...r.kernel.org" <linux-hwmon@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Zeynep Arslanbenzer <Zeynep.Arslanbenzer@...log.com>
Subject: Re: [PATCH v3 1/2] drivers: rtc: add max313xx series rtc driver


On 15/02/23 10:40, Alexandre Belloni wrote:
> On 14/02/2023 20:28:05+0000, Chris Packham wrote:
>> Hi Ibrahim,
>>
>> On 9/11/22 01:22, Ibrahim Tilki wrote:
>>> Adding support for Analog Devices MAX313XX series RTCs.
>>>
>>> Signed-off-by: Ibrahim Tilki <Ibrahim.Tilki@...log.com>
>>> Signed-off-by: Zeynep Arslanbenzer <Zeynep.Arslanbenzer@...log.com>
>>> ---
>>>    drivers/rtc/Kconfig        |   11 +
>>>    drivers/rtc/Makefile       |    1 +
>>>    drivers/rtc/rtc-max313xx.c | 1070 ++++++++++++++++++++++++++++++++++++
>>>    3 files changed, 1082 insertions(+)
>>>    create mode 100644 drivers/rtc/rtc-max313xx.c
>> What is the current state of this work? I see there are some comments on
>> this v3 iteration from late last year and I couldn't find any newer
>> iteration on any mailing list. We've got some new hardware arriving soon
>> that will have the MAX31331 RTC and I'm keen to see this patch series
>> land. Is there anything I can do to help it along? I can't be very
>> specific about when I'll see the new hardware (who can these days), the
>> last update was "boards are due in March".
>>
>> For the maintainers on the Cc list once the dust settles how would I get
>> this supported in a LTS kernel (we're currently using the 5.15 series)?
>> Or is totally out of the question because it's not just a new device id?
> This will not happen, you will have to update to the next LTS (which you
> should do anyway)
I was afraid that was going to be the answer. We'll have to carry it as 
a local patch until there is a LTS version with the driver support we 
need in it.