[PATCH v4 2/5] mfd: syscon: add a DT property to set value width
lee.jones at linaro.org
Tue Nov 24 09:22:14 PST 2015
On Tue, 24 Nov 2015, Damien Riegel wrote:
> On Tue, Nov 24, 2015 at 08:20:36AM +0000, Lee Jones wrote:
> > On Mon, 23 Nov 2015, Damien Riegel wrote:
> > > Currently syscon has a fixed configuration of 32 bits for register and
> > > values widths. In some cases, it would be desirable to be able to
> > > customize the value width.
> > >
> > > For example, certain boards (like the ones manufactured by Technologic
> > > Systems) have a FPGA that is memory-mapped, but its registers are only
> > > 16-bit wide.
> > >
> > > This patch adds an optional "bus-width" DT binding for syscon that
> > > allows to change the width for the data bus (i.e. val_bits). If this
> > > property is provided, it will also adjust the register stride to
> > > bus-width / 8. If not provided, the default configuration is used.
> > >
> > > Signed-off-by: Damien Riegel <damien.riegel at savoirfairelinux.com>
> > > ---
> > > Documentation/devicetree/bindings/mfd/syscon.txt | 3 +++
> > > drivers/mfd/syscon.c | 13 +++++++++++++
> > > 2 files changed, 16 insertions(+)
> > Works for me.
> > For my own reference:
> > Acked-by: Lee Jones <lee.jones at linaro.org>
> This pachset requires a new version to fix something in the watchdog,
> I will add your Ack in the v5.
> > How would you like this set to be handled?
> Not sure what you mean. Actually, I don't know how it works for such
> patchset with changes across multiple subsystems. What are the options?
I'm happy to handle it, I just need Acks from the other Maintainers.
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