linux-kernel - Re: [PATCH 6/6] ARM: da850: adjust memory settings for tilcdc

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Message-ID: <7hvax8ferr.fsf@baylibre.com>
Date:   Tue, 04 Oct 2016 06:02:48 -0700
From:   Kevin Hilman <khilman@...libre.com>
To:     Peter Ujfalusi <peter.ujfalusi@...com>
Cc:     Sekhar Nori <nsekhar@...com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        LKML <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 6/6] ARM: da850: adjust memory settings for tilcdc

Peter Ujfalusi <peter.ujfalusi@...com> writes:

> On 10/01/16 12:24, Sekhar Nori wrote:

[...]

>> In any case, to configure the PBBR, you will have to introduce a driver
>> for it in drivers/memory. Then you can set it up per board using a DT
>> parameter.
>
> and we can reuse the introduced bindings for am335x and OMAP1/2 as well. On
> OMAP the legacy DMA API provided a call to raise the priority of the sDMA in
> EMIF :o That needs to be removed and replaced.

Can you point us to the bindings you're referring to?

Also, a new driver in drivers/memory is fine for setting the PBBR, but
what about the SYSCFG0 registers.  Are you OK with leaving those in the
init code as proposed in $SUBJECT patch?

Kevin