• Maxime Ripard's avatar
    ARM: dts sunxi: Relax a bit the CMA pool allocation range · 92025b90
    Maxime Ripard authored
    The hardware codec on the A10, A10s, A13 and A20 needs buffer in the
    first 256MB of RAM. This was solved by setting the CMA pool at a fixed
    address in that range.
    
    However, in recent kernels there's something else that comes in and
    reserve some range that end up conflicting with our default pool
    requirement, and thus makes its reservation fail.
    
    The video codec will then use buffers from the usual default pool,
    outside of the range it can access, and will fail to decode anything.
    
    Since we're only concerned about that 256MB, we can however relax the
    allocation to just specify the range that's allowed, and not try to
    enforce a specific address.
    
    Fixes: 5949bc56 ("ARM: dts: sun4i-a10: Add Video Engine and reserved memory nodes")
    Fixes: 96043201 ("ARM: dts: sun5i: Add Video Engine and reserved memory nodes")
    Fixes: c2a641a7 ("ARM: dts: sun7i-a20: Add Video Engine and reserved memory nodes")
    Signed-off-by: default avatarMaxime Ripard <maxime@cerno.tech>
    Acked-by: default avatarChen-Yu Tsai <wens@csie.org>
    Link: https://lore.kernel.org/r/20200704130829.34297-1-maxime@cerno.tech
    92025b90
sun7i-a20.dtsi 40.9 KB