narmstrong changed the topic of #linux-amlogic to: Amlogic mainline kernel development discussion - our wiki http://linux-meson.com/ - ml linux-amlogic@lists.infradead.org - Publicly Logged on https://irclog.whitequark.org/linux-amlogic
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<chewitt> note the comments in the commit !
<chewitt> 8-bit seems to work, 10-bit deadlocks the device
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<asdf28> narmstrong: thanks for your help, unfortunately i could not get the mali framebuffer driver to work on an s905x box
<asdf28> you mentioned something about sdl2, did you mean that it is for sdl2 only?
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<asdf28> the farthest i got was getting a mali fbdev triangle demo to work
<asdf28> the funny thing is, when i set the fbdev_overalloc to 200, the opengl apps work but my screen turns black
<asdf28> with fbdev_overalloc 100, all the apps return an EGL_BAD_ALLOC exception
<asdf28> and with fbdev_overalloc 300, the meson_drm driver outputs a message that it couldn't create the framebuffer device
<asdf28> if someone has a working combination of kernel, mali driver version and mali blob version, please tell me. i can't seem to find one
<asdf28> or using the mali blob for wayland which supports KMS/DRM, but i couldn't get that to work either
<narmstrong> asdf28: yes i know you need to tweak the meson drm driver to allow more than 3840x2160 because in 1080p it allocates a 3x1080p frame and DRM doesn’t allow that
<narmstrong> It a bug but since it’s not a supported feature we don’t fix it
<asdf28> oh
<asdf28> my screen is only 1280x1024
<asdf28> would that work?
<narmstrong> Yeah whatever it more than 3840x2160, this is why it fails
<narmstrong> Just change the numbers to match 1280x1024 x 3 and you’re good
<narmstrong> Note that with the wayland or gbm blob you don’t need all these tweaks or special config and kernel paras
<asdf28> does it really need to be 300 / 3x?
<narmstrong> asdf28: this sdl has been tweaked to work with the fbdev blob https://github.com/superna9999/libsdl2-2.0.2-dfsg1
<narmstrong> asdf28: just put big numbers
<asdf28> yes i really wanted to try the wayland blob. when an app needs libgbm.so, can i just link that to the wayland libMali.so? or isn't that enough?
<asdf28> thanks! i was wondering about this sdl2 version that you mentioned
<asdf28> very interesting, i'll try that
<narmstrong> And this ioq3 for gles2 was made to work with the tweaked sdl https://github.com/superna9999/ioq3/blob/meson-gx/README-meson.txt
<narmstrong> asdf28: yes tjr libmali provides the gl, gbm and libwayland in the same binary
<narmstrong> Just add symlinks with the right names
<asdf28> is there a particular version of the mali driver and blobs that you'd recommend? i am using r6p1 i believe
<asdf28> it's a little overwhelming because there are so many
<narmstrong> I don’t remember when I stopped testing
<asdf28> and the one time it "worked" (apps ran, but with a black screen) it was one particular combination that i forgot
<asdf28> okay i'll keep trying
<asdf28> thanks a lot i will try the sdl2 version that you gave me
<narmstrong> Here is the script that builds an image https://github.com/superna9999/meson_gx_mali_q3_demo
<asdf28> but this should work with a mainline kernel, right? i'm asking because you also have a fork of linux 4.14 in your github repos
<asdf28> and i thought maybe this is needed too
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<efqw> Does anyone have a p212 based Android boot image that I can extract the stock dtb from?
<efqw> I have a p211 based box and I'm looking for hardware differnces that might not be apparent from a simple physical inspection.
<efqw> I want the Android based one because it might be easier to diff, since the structure should be pretty similar to the p211 Android dtb I have on hand.
<asdf28> i have a dtb and dts for my p212 board
<asdf28> but no android image
<asdf28> should i upload it?
<efqw> Is the dtb extracted from the stock Android firmware?
<asdf28> yes
<efqw> Sure, please upload them then, thank you.
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<narmstrong> asdf28: yeah because I started upstreaming amlogic stuff since Linux 4.7 !
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