Hi Chen-Yu, Thanks for your suggestion. On Mon, 2022-06-20 at 13:25 +0800, Chen-Yu Tsai wrote: > On Mon, Jun 20, 2022 at 12:54 PM Chen-Yu Tsai <wenst@xxxxxxxxxxxx> > wrote: > > > > On Sat, Jun 18, 2022 at 3:29 PM Yunfei Dong < > > yunfei.dong@xxxxxxxxxxxx> wrote: > > > > > > Need to get dec_capability from scp first, then initialize > > > decoder > > > supported format and other parameters according to dec_capability > > > value. > > > > > > Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx> > > > > Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx> > > Tested-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx> > > > > Tested on MT8183 on mainline 20220617-next with the vcodec-dec DT > > node > > copied from the ChromeOS v5.10 kernel. > > > > This fixes an issue where the first attempt to enumerate formats on > > the > > device right after boot returns an empty list. > > BTW, this should have a Fixes tag. > > Either > > Fixes: 7a7ae26fd458 ("media: mediatek: vcodec: support stateless VP8 > decoding") > > which looks like the first instance of when firmware capability > really is > considered, or > > Fixes: fd00d90330d1 ("media: mtk-vcodec: vdec: move stateful ops into > their own file") > > which matches when ctx->dev->vdec_pdata->init_vdec_params(ctx) was > first added. > > > ChenYu I will fix the patch in v2. Best Regards, Yunfei Dong