Re: [PATCH 1/3] media: rockchip: Introduce the rkvdec2 driver

Piotr Oniszczuk
2025-01-29T14:50:33Z

> Wiadomość napisana przez Detlev Casanova <detlev.casanova@collabora.com> w dniu 15 cze 2024, o godz. 21:44:
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> Yes, the vdpu34x decoder on rk356x socs should be supported by this driver but
> I don't have boards to test that unfortunately.
>

Detlev,

Just FYI:

I done some tests of rkvdec2 on 6.12.11 on 3588, 3568 and 3566

For enabling rkvdec2 on 356x i:
-add 356x compatible in rkvdec2.c
-add dtsi nodes like this: https://github.com/warpme/minimyth2/blob/master/script/kernel/linux-6.12/files/1078-arm64-dtsi-rockchip-rk356x-add-rkvdec2-video-decoder-nodes.patch

With this i can say:
-on rk3588 i have some hevc 4k decoding perfectly but some others are failing
-on rk3566/3568 only subset of 3588’s samples is decoded well. (but is works then works perfectly fine)
-when not failing on 3588 sample fails on 356x - is see errors like:

[ 95.666669] iova: 0x00000000f2e80000 already mapped to 0x0000000037378000 cannot remap to phys: 0x000000002f8c0000 prot: 0x3
[ 95.745082] iova: 0x00000000f2f46000 already mapped to 0x00000000372b6000 cannot remap to phys: 0x000000003a403000 prot: 0x3
[ 95.822012] iova: 0x00000000f2ee6000 already mapped to 0x0000000037126000 cannot remap to phys: 0x000000003a803000 prot: 0x3
[ 95.896802] iova: 0x00000000f2ec6000 already mapped to 0x0000000029fe6000 cannot remap to phys: 0x000000003a403000 prot: 0x3
turning-off iommu makes above errors disappear - but sample still fails.

If anybody hints me for way/tool to analyse of playing/failing samples to catch: what encoding specifics makes given sample failing to decode on rkvdec2 - i'll be more that happy to provide details…
(doing simple mediainfo <file> shows no differences for me…)