On Mon, Jun 03, 2019 at 07:09:48PM +0000, Kamps, John-Eric wrote: > >Do you have a setup that works with the BSP? Usually in cases like > >this I would dump the >registers of the whole display engine and > >the TCON, and compare them to see what's going on. > > Not yet tested, because the new uboot can't load the original BSP > Kernel. And I was thinking that it will be not so difficult. :-( > > The original System is an Android one. > Can I change the uboot kernel bootargs and use the original Android > kernel with changed Linux rootfs and boot them? Is that possible? > If yes I would give this a try to check that I will get a running > BSP System to dump the register. > > I dumped the tcon and ccu section from the original uboot which has > a boot splash screen on the display. > > Should I also dump and compare the de (display section) as well? > Any other register that I should dump and compare?
If your Android build has access to /dev/mem, I have a small test program to do this: http://code.bulix.org/p19scz-757910 You can compile it statically and put it into your rootfs, and then run it. You'll want to use the -2 and -e options. Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com -- 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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20190604082558.vhqluwdlfq2foz4m%40flea. For more options, visit https://groups.google.com/d/optout.
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