On Sun, 2017-03-19 at 13:58 -0300, Mauro Carvalho Chehab wrote: > Em Fri, 17 Mar 2017 17:34:36 -0700 > Eric Anholt <eric@xxxxxxxxxx> escreveu: > > > Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx> writes: > > > > > Em Wed, 15 Mar 2017 18:46:24 -0700 > > > Michael Zoran <mzoran@xxxxxxxxxxxx> escreveu: > > > > > > > On Wed, 2017-03-15 at 22:08 -0300, Mauro Carvalho Chehab wrote: > > > > > > > > > No, I didn't. Thanks! Applied it but, unfortunately, didn't > > > > > work. > > > > > Perhaps I'm missing some other patch. I'm compiling it from > > > > > the Greg's staging tree (branch staging-next): > > > > > https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ > > > > > staging. > > > > > git/log/?h=staging-next > > > > > > > > > > Btw, as I'm running Raspbian, and didn't want to use compat32 > > > > > bits, > > > > > I'm compiling the Kernel as an arm32 bits Kernel. > > > > > > > > > > I did a small trick to build the DTB on arm32: > > > > > > > > > > ln -sf ../../../arm64/boot/dts/broadcom/bcm2837-rpi-3- > > > > > b.dts > > > > > arch/arm/boot/dts/bcm2837-rpi-3-b.dts > > > > > ln -sf ../../../arm64/boot/dts/broadcom/bcm2837.dtsi > > > > > arch/arm/boot/dts/bcm2837.dtsi > > > > > git checkout arch/arm/boot/dts/Makefile > > > > > sed "s,bcm2835-rpi-zero.dtb,bcm2835-rpi-zero.dtb > > > > > bcm2837-rpi-3- > > > > > b.dtb," a && mv a arch/arm/boot/dts/Makefile > > > > > > > > > > > > > Two other hacks are currently needed to get the camera to work: > > > > > > > > 1. Add this to config.txt(This required to get the firmware to > > > > detect > > > > the camera) > > > > > > > > start_x=1 > > > > gpu_mem=128 > > > > > > I had this already. > > > > > > > > > > > 2. VC4 is incompatible with the firmware at this time, so you > > > > need > > > > to presently munge the build configuration. What you do is > > > > leave > > > > simplefb in the build config(I'm assuming you already have > > > > that), but > > > > you will need to remove VC4 from the config. > > > > > > > > The firmware currently adds a node for a simplefb for debugging > > > > purposes to show the boot log. Surprisingly, this is still > > > > good enough > > > > for basic usage and testing. > > > > > > That solved the issue. Thanks! It would be good to add a notice > > > about that at the TODO, not let it build if DRM_VC4. > > > > > > Please consider applying the enclosed path. > > > > The VC4 incompatibility (camera firmware's AWB ends up briefly > > using the > > GPU, without coordinating with the Linux driver) is supposed to be > > fixed > > in current firmware > > (https://github.com/raspberrypi/firmware/issues/760#issuecomment-28 > > 7391025) > > With the current firmware, when X starts, the screen becomes blank, > with upstream Kernel (it works with the downstream Kernel shipped > with > the firmware). > > Maybe something changed at DT? > > Thanks, > Mauro Hi, exactly which DT are you using and which drivers are you using for video. If this is a RPI 3, then as you know VC4 doesn't work due to the HDMI hotplug issue. So I'm not 100% sure how you were getting video. A working DT that I tried this morning with the current firmware is posted here: http://lists.infradead.org/pipermail/linux-rpi-kernel/2017-March/005924 .html It even works with minecraft_pi! _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
