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List:       linux-rtc
Subject:    Re: [PATCH] rtc: ds1374: Add trickle charger device tree binding
From:       Moritz Fischer <mdf () kernel ! org>
Date:       2017-04-24 21:28:35
Message-ID: 20170424212835.GA24096 () tyrael ! amer ! corp ! natinst ! com
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Hi Alex,

On Mon, Apr 24, 2017 at 07:16:39PM +0200, Alexandre Belloni wrote:

> I think I would do something with MFD as you were suggesting on IRC. You
> can have a look at the flexcom driver (atmel-flexcom.c) which is simply
> selecting a mode and then using whatever IP driver already existed
> (UART, I2C or SPI).

That's an interesting approach, so the idea is to basically use the MFD
to switch an existing driver one way or another via pdata? That could work.

> 
> I didn't have a close look but maybe that fits. Then, as you are
> concerned wtih backward compatibility, you could enforce the mode from
> the MFD driver, depending on the CONFIG_RTC_DRV_DS1374_WDT value.

This is where I'm currently at:

https://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux.git/log/?h=wip/mfd-ds1374-rfc


Still a WIP, maybe can get out a patchset by the end of the week ...

Thanks,
Moritz

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