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Re: Testing versatile kernel on Raspberry Pi?

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On Tue, 2016-01-26 at 13:48 +0000, Ben Hutchings wrote:
> On Tue, 2016-01-26 at 13:53 +0100, Sebastian Reichel wrote:
> > On Tue, Jan 26, 2016 at 08:24:16AM +0000, Ian Campbell wrote:
> [...]
> > > IMHO RPi1 is best supported by Raspbian, or if people really want it in
> > > Debian then by armel, but not by an armhf+armel hybrid which involves
> > > supporting v6 in some way on armhf.
> > 
> > I had a few RPi1s running with armel. For simple tasks (e.g.
> > network2gpio or i2c) it's more than enough. I wonder if an armel
> > -armmp kernel would be worth the trouble. We currently have the
> > following armel kernel targets:
> > 
> > -kirkwood  (multiplatform support since v3.14 (ba5a37e521942))
> > -orion5x   (multiplatform support since v4.5 [0])
> > -versatile (DT only since v4.5 [0])
> > 
> > So maybe switch to -armv5 and -armv6 multiplatform kernels from
> > v4.5+?
> 
> ARMv5 multiplatform would be nice, but we're constrained by the size of
> flash partitions on the small machines that are supported so I don't
> think this would work.

I had another think about this and compared kirkwood and orion5x.  It
seems that they are similar enough that we can combine them without
breaking the size limit (~2 MB compressed), though the result is very
close.  Combining with versatile is probably not possible.

After reducing the number of flavours in this way, we could add a v6
kernel for armel too, but who would use it?  RPi 1 users expect armhf
(rebuilt for v6) not armel.

Ben.

> > -armv5     kirkwood + orion5x + versatile
> > -armv6     bcm2036
> > 
> > [0] http://lkml.iu.edu/hypermail/linux/kernel/1601.2/03005.html
> 
> I don't think we're going to add any more hardware support to the armel
> port at this stage.
> 
> Ben.
> 
-- 
Ben Hutchings
73.46% of all statistics are made up.

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Thread

Testing versatile kernel on Raspberry Pi? Diederik de Haas <didi.debian@cknow.org> - 2016-01-16 03:30 +0100
  Re: Testing versatile kernel on Raspberry Pi? Ian Campbell <ijc@debian.org> - 2016-01-25 14:30 +0100
    Re: Testing versatile kernel on Raspberry Pi? Diederik de Haas <didi.debian@cknow.org> - 2016-01-25 15:50 +0100
      Re: Testing versatile kernel on Raspberry Pi? Ben Hutchings <ben@decadent.org.uk> - 2016-01-25 16:00 +0100
        Re: Testing versatile kernel on Raspberry Pi? Ian Campbell <ijc@debian.org> - 2016-01-25 16:10 +0100
          Re: Testing versatile kernel on Raspberry Pi? Diederik de Haas <didi.debian@cknow.org> - 2016-01-25 17:30 +0100
      Re: Testing versatile kernel on Raspberry Pi? Ian Campbell <ijc@debian.org> - 2016-01-25 16:00 +0100
        Re: Testing versatile kernel on Raspberry Pi? Diederik de Haas <didi.debian@cknow.org> - 2016-01-25 17:40 +0100
          Re: Testing versatile kernel on Raspberry Pi? Sebastian Reichel <sre@debian.org> - 2016-01-25 18:10 +0100
            Re: Testing versatile kernel on Raspberry Pi? Ian Campbell <ijc@debian.org> - 2016-01-26 09:30 +0100
              Re: Testing versatile kernel on Raspberry Pi? Sebastian Reichel <sre@debian.org> - 2016-01-26 14:00 +0100
                Re: Testing versatile kernel on Raspberry Pi? Ben Hutchings <ben@decadent.org.uk> - 2016-01-26 14:50 +0100
                Re: Testing versatile kernel on Raspberry Pi? Ben Hutchings <ben@decadent.org.uk> - 2016-01-27 18:50 +0100
                Re: Testing versatile kernel on Raspberry Pi? Sebastian Reichel <sre@debian.org> - 2016-01-27 19:20 +0100
                Re: Testing versatile kernel on Raspberry Pi? Ben Hutchings <ben@decadent.org.uk> - 2016-01-27 19:30 +0100
                Re: Testing versatile kernel on Raspberry Pi? Sebastian Reichel <sre@debian.org> - 2016-01-27 21:00 +0100
              Re: Testing versatile kernel on Raspberry Pi? Diederik de Haas <didi.debian@cknow.org> - 2016-01-26 16:20 +0100
            Re: Testing versatile kernel on Raspberry Pi? Ian Campbell <ijc@hellion.org.uk> - 2016-01-26 10:50 +0100

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