Hi Chris, all, [ Dropping Greg and linux-...@vger.kernel.org ] > Peter,
> On Sat, 24 Jul 2021 at 15:22, Petr Vorel <petr.vo...@gmail.com> wrote: > > Hi Greg, > > > On Sat, Jul 24, 2021 at 03:41:42PM +0200, Petr Vorel wrote: > > > > > Why is this even a driver at all, it looks like you can write a small > > > > > userspace program using libusb to do everything it does, right? What > > > > > exactly is this driver needed for? > > > > I'm sorry for not providing more info at the beginning. This is a > > > > driver for > > > > host computer (i.e. developers laptop) used by LiveSuit tool [2] to > > > > flash Images > > > > to the NAND of Allwinner devices. LiveSuit itself [3] is unfortunately > > > > provided > > > > only in binary form. The only open source code with GPL v2 license is > > > > awusb > > > > driver. Thus I thought I could ease my life with upstreaming at least > > > > the > > > > kernel driver. But maybe it's not a good idea. I'm using LiveSuit for > > > > flashing > > > > Allwinner A31, but it requires quite old distro due libqtgui4. Maybe > > > > sunxi folks > > > > use something newer nowadays, but I haven't found anything in their > > > > wiki. > > > Ah, that's not going to be good then. Really, this doesn't seem to need > > > to be a driver at all, and the ioctls are really strange so we would > > > need to change them anyway before it could be merged. But with no > > > access to userspace code, that will be quite difficult, so I would push > > > back on allwinner and have them work on resolving this. > > Understand, it makes sense. Thanks for your time! > > @Sunxi community: am I missing something? Using LiveSuit with old distro > > chroot > > and Xephyr with out-of-tree module isn't fun :(. > Suggest you take a look at sunxi-tools - specifically the sunxi-fel > tool. This is a libusb-based userland tool to talk to these devices. > I'm not sure if it supports flashing to nand on A31 - never tried it - > but have used it to flash to eMMC and SPI flash on their other chips. Thanks for a tip. Looking into sources it does not look like sunxi-fel supports NAND. Also from Debian wiki [1] (which describes bootable SD Card) it looks like only old Allwinner u-boot supported access to NAND, thus I'd be surprised if sunxi-tools supported it. sunxi-bootinfo does not implement NAND, sunxi-nand-image-builder (which is not built by default) creates raw NAND images, but now word about flashing. I wonder why NAND is (probably) not supported by sunxi? Lack of documentation? Kind regards, Petr [1] https://wiki.debian.org/InstallingDebianOn/Allwinner > hth, > Chris > > Kind regards, > > Petr > > > thanks, > > > greg k-h > > -- > > You received this message because you are subscribed to the Google Groups > > "linux-sunxi" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to linux-sunxi+unsubscr...@googlegroups.com. > > To view this discussion on the web, visit > > https://groups.google.com/d/msgid/linux-sunxi/YPwiGB7VnzECN/jg%40pevik. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/YPw/iTdsqggtvlKL%40pevik.
