Re: omap3-sgx-modules-5.01.01.xx ONLY supports hardfp mode for now

[Denys Dmytriyenko <denys@ti.com>]

On Thu, Aug 06, 2015 at 04:20:40PM +1200, Ankur Tyagi wrote:
> I just checked that inside "ti33x.inc",
> DEFAULTTUNE ?= "cortexa8thf-neon"
> 
> But it is overwritten by inclusion of arch-armv7a.inc
> DEFAULTTUNE ?= "armv7a"
> TUNE_FEATURES_tune-armv7a ?= "armv7a vfp"
> 
> But TUNER_FEATURES also include "callconvention-hard".
> 
> I am bit confused here.

It's not overwritten:
http://www.yoctoproject.org/docs/1.6/bitbake-user-manual/bitbake-user-manual.html#setting-a-default-value


> "Knowledge is knowing tomato is a fruit, wisdom is not putting it in a
> fruit salad"
> 
> On Thu, Aug 6, 2015 at 3:49 PM, Ankur Tyagi <ankur.tyagi85@gmail.com> wrote:
> 
> > thanks for help.
> >
> > Will try with above suggestion
> >
> > "Knowledge is knowing tomato is a fruit, wisdom is not putting it in a
> > fruit salad"
> >
> > On Thu, Aug 6, 2015 at 3:46 PM, Khem Raj <raj.khem@gmail.com> wrote:
> >
> >> On Wed, Aug 5, 2015 at 8:41 PM, Ankur Tyagi <ankur.tyagi85@gmail.com>
> >> wrote:
> >> > Thanks for your response.
> >> >
> >> > So it is worth trying with TUNE_FEATURE "hfp" and measure the
> >> performance.
> >> > Do I have to set TARGET_FPU as "hfp-neon" as default value is "vfp-neon"
> >> >
> >>
> >> all you might need is to select a proper DEFAULTTUNE in machine config
> >> something like
> >>
> >> DEFAULTTUNE ?= "cortexa8thf-neon"
> >>
> >> > Does it make sense to push this change upstream as well ?
> >> >
> >> > "Knowledge is knowing tomato is a fruit, wisdom is not putting it in a
> >> fruit
> >> > salad"
> >> >
> >> > On Thu, Aug 6, 2015 at 3:00 PM, Khem Raj <raj.khem@gmail.com> wrote:
> >> >>
> >> >> On Wed, Aug 5, 2015 at 7:47 PM, Ankur Tyagi <ankur.tyagi85@gmail.com>
> >> >> wrote:
> >> >> > Hi,
> >> >> >
> >> >> > I am using TI AM335x-EVM kit and while building image using
> >> >> > "arago-daisy-config.txt", I saw this warning :
> >> >> >
> >> >> > omap3-sgx-modules-5.01.01.02 ONLY supports hardfp mode for now
> >> >> > omap3-sgx-modules-5.01.01.01 ONLY supports hardfp mode for now
> >> >> >
> >> >> > and TUNE_FEATUREis "vfp"
> >> >> >
> >> >> > Does that mean GPU is not getting used anymore ?
> >> >>
> >> >> not really, what its telling is that you dont have
> >> >> callconvention-hard in TUNE_FEATURES
> >> >> which means that compiler wont use hardfloat ABI when making function
> >> >> calls.
> >> >> but neon/vfp will still be used e.g. when doing vectorization etc. if
> >> >> using hardfp ABI will radically improve performance totally depends
> >> >> upon kind of workload that you are measuring. It may vary.
> >> >>
> >> >> > I am using QT5 with eglfs platform and need GPU support for
> >> performance.
> >> >> >
> >> >> > Please clarify the situation.
> >> >> >
> >> >> > Thanks
> >> >> > Ankur
> >> >> >
> >> >> > --
> >> >> > _______________________________________________
> >> >> > meta-ti mailing list
> >> >> > meta-ti@yoctoproject.org
> >> >> > https://lists.yoctoproject.org/listinfo/meta-ti
> >> >> >
> >> >
> >> >
> >>
> >
> >

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