On Sat, 27 Dec 2014 15:50:26 +0100 Patrice Go <patgsiosisr@gmail.com> wrote: > i enounce my actual understanding of these points : > > Jessie is defined/frozen actually with a kernel 3.16, which doesn't > support the A20 device-tree (structure of the pcduino3 board). then > if i install a Jessie, will i be able to use it for minimal uses ? Without a suitable device tree blob, the system won't boot. > by > example, command line and ssh, to install the kernel 3.17 backport > which support the A20 device tree ? > or is it better to install the sid ? You'll need experimental. > Patrice G. > > Le 25 déc. 2014 23:35, "Karsten Merker" <merker@debian.org> a écrit : > > The pcduino3 is (in contrast to the older A10-based pcduino) not > > yet officially supported by Debian (device-tree support for it > > has been added in kernel 3.17 while Jessie uses Kernel 3.16), but There is a 3.18 in experimental which may include the relevant support but it would be up to you to test on real hardware. https://packages.debian.org/experimental/linux-image-3.18.0-trunk-armmp usr/lib/linux-image-3.18.0-trunk-armmp/sun7i-a20-pcduino3.dtb That will involve preparing the files to install yourself so that it includes the relevant kernel package before you could boot the board. The dtb can't simply be used with a 3.16 kernel. You'll also need all the setup required for the bootloader, presumably u-boot. > > we could possibly backport the device-tree support. The major > > issue at the moment is that Debian is currently frozen for the > > next release, which means that normally only bugfixes get > > accepted, but no new features. If you are willing to act as a > > tester, I can look into backporting the relevant changes to > > kernel 3.16 and making the necessary adjustments to the > > installer, but I cannot promise that these modifications would > > be accepted by the release team. > > > > Please note that Debian would in any case only support using a > > serial console on the pcduino3, as there is no video driver > > support for the A20 in the mainline kernel. For background > > information about Debian on Allwinner-based systems, I would like > > to refer you to the Debian Wiki at > > https://wiki.debian.org/InstallingDebianOn/Allwinner. -- Neil Williams ============= http://www.linux.codehelp.co.uk/
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