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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 2022-09-29 at 10:30 +0200, AngeloGioacchino Del Regno wrote: > Il 28/09/22 19:26, Krzysztof Kozlowski ha scritto: > > On 28/09/2022 09:58, AngeloGioacchino Del Regno wrote: > > > Il 28/09/22 09:04, Krzysztof Kozlowski ha scritto: > > > > On 27/09/2022 12:17, AngeloGioacchino Del Regno wrote: > > > > > > > > > > > > > > > > > > > Sorry, my bad. I alsways run `make dtbs_check` to confirm > > > > > > dtb with > > > > > > bindings. I just think we didn't limit node names in mtk- > > > > > > vodec > > > > > > bindings. I will pay attention next time. > > > > > > > > > > > > > > > > > > Since currently the vcodec lat and core nodes are absent > > > > > > from the mtk > > > > > > dts, do you think the child node name should be changed to > > > > > > something > > > > > > more general (ex: video-codec) in mediatek,vcodec-subdev- > > > > > > decoder > > > > > > bindings? > > > > > > > > > > The video codec is mt8192-vcodec-dec, while the other nodes > > > > > are describing > > > > > the VPU instances (and/or vpu cores)... I'm not sure. > > > > > > > > > > Krzysztof, please, can you give your opinion on that? > > > > > > > > > > > > > What's the difference between them? I understand parent device > > > > is entire > > > > block of consisting of multiple processing units? If so, video- > > > > codec > > > > actually could fit in both places. But feel free to call it a > > > > bit > > > > different (video-codec-core, video-codec-lat, processing-unit, > > > > even > > > > something less generic). Sometimes it's tricky to find nice > > > > name, so I > > > > wouldn't worry too much in that case. Just not "mt8192-vcodec" > > > > :) > > > > > > > > > > The parent device is the entire block consisting of multiple > > > processing units > > > and has "global" control registers; children are LAT(s) and > > > processing cores. > > > > > > From my understanding, the processing cores are physical cores > > > of one big VPU > > > and, depending on the actual (current gen) SoC, the VPU may have > > > one or two > > > cores. > > > > > > Right now, the bindings want vcodec-latX@addr, vcodec-coreX@addr > > > (where X is > > > a number, like vcodec-core0, vcodec-core1) but, in my opinion, > > > changing that > > > to video-codec-lat@addr and video-codec-core@addr would be more > > > descriptive. > > > > > > ...Or should we simply leave the bindings as they are and just go > > > with the > > > abbreviated "vcodec-(hwtype)" names? > > > > video-codec-lat sounds better, but I am not sure if it is worth the > > churn, so I am fine with both. > > > > Thank you Krzysztof! > > Allen, can you please change the binding to use "video-codec-lat" and > "video-codec-core" (so change "vcodec" to "video-codec") and then use > these names for this commit? > > Doing the change right now won't break the ABI, as there's no > devicetree > using that binding yet (with this commit adding the first user), so > you > can safely go for the rename without any complication. > > Regards, > Angelo > > > Hi Angelo, No problem, I will update in the following version. Thanks, Allen _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel