Re: [PATCH v3 1/6] mfd: simple-mfd-i2c: Add Delta TN48M CPLD support

From: Robert Marko
Date: Tue Jun 01 2021 - 05:12:45 EST


On Tue, Jun 1, 2021 at 10:39 AM Lee Jones <lee.jones@xxxxxxxxxx> wrote:
>
> On Mon, 31 May 2021, Robert Marko wrote:
>
> > Delta TN48M switches have a Lattice CPLD that serves
> > multiple purposes including being a GPIO expander.
> >
> > So, lets use the simple I2C MFD driver to provide the MFD core.
> >
> > Also add a virtual symbol which pulls in the simple-mfd-i2c driver and
> > provide a common symbol on which the subdevice drivers can depend on.
> >
> > Signed-off-by: Robert Marko <robert.marko@xxxxxxxxxx>
> > ---
> > Changes in v2:
> > * Drop the custom MFD driver and header
> > * Use simple I2C MFD driver
> >
> > drivers/mfd/Kconfig | 10 ++++++++++
> > drivers/mfd/simple-mfd-i2c.c | 1 +
> > 2 files changed, 11 insertions(+)
>
> I responded to a previous version of this.
>
> The question still remains - why do you need one single Regmap
> encompassing all functionality. The register banks look separated to
> me at first glance.

Hi Lee,
In the end, I replied to your v2 comments as well.
It's quite extensive so I don't want to copy the replies here again.

Is that okay, or should I copy the answers here as well?

Regards,
Robert
>
> --
> Lee Jones [李琼斯]
> Senior Technical Lead - Developer Services
> Linaro.org │ Open source software for Arm SoCs
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--
Robert Marko
Staff Embedded Linux Engineer
Sartura Ltd.
Lendavska ulica 16a
10000 Zagreb, Croatia
Email: robert.marko@xxxxxxxxxx
Web: www.sartura.hr