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    SubjectRe: [PATCH 4/6] ARM: dts: da850-lcdk: add support for 1024x768 resolution
    On Fri, Sep 30, 2016 at 11:37:57AM +0200, Bartosz Golaszewski wrote:
    > 2016-09-29 20:58 GMT+02:00 Karl Beldan <karl.beldan@gmail.com>:
    > > Hi,
    > >
    > > On Thu, Sep 29, 2016 at 06:31:53PM +0200, Bartosz Golaszewski wrote:
    > >> Add svga timings for 1024x768 resolution to the da850-lcdk
    > >> device tree.
    > >>
    > >
    >
    > [snip]
    >
    > >
    > > Why do you also call 1024x768 svga ?
    > >
    >
    > Thanks, should have been xga. will fix in v2.
    >
    > > I don't think the LCDK can cope with this resolution at this frequency
    > > (in terms of mem bandwidth), at least that's what I observed back in
    > > August. If confirmed I think it is worth mentioning in the log at least,
    > > but then I doubt adding this config would be useful.
    > >
    >
    > Thanks for the heads up. How would that manifest itself? This seems to
    > work fine for me - I'm not getting any warnings on a simple system -
    > maybe if I added some additional memory load it would complain.
    >

    A mere dmesg > /dev/tty0 (or repeatedly cat-ting a file to /dev/tty0)
    should suffice to make the issue visible and trigger FIFO underflows.

    Regards,
    Karl

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