On Tue, 2024-11-26 at 09:57 +0100, AngeloGioacchino Del Regno wrote: > External email : Please do not click links or open attachments until you have verified the sender or the content. > > > Il 26/11/24 08:42, CK Hu (胡俊光) ha scritto: > > Hi, Angelo: > > > > On Wed, 2024-11-20 at 13:45 +0100, AngeloGioacchino Del Regno wrote: > > > External email : Please do not click links or open attachments until you have verified the sender or the content. > > > > > > > > > Add support for the newer HDMI-TX (Encoder) v2 and DDC v2 IPs > > > found in MediaTek's MT8195, MT8188 SoC and their variants, and > > > including support for display modes up to 4k60 and for HDMI > > > Audio, as per the HDMI 2.0 spec. > > > > > > HDCP and CEC functionalities are also supported by this hardware, > > > but are not included in this commit. > > > > Both MT8173 HDMI and MT8173 CEC has hot plug detection interrupt. > > I don't know why but MT8173 choose CEC to detect hot plug. > > > > Does MT8195 CEC has hot plug detection interrupt? > > If it has, may we align the hot plug detection flow with MT8173? > > > > The CEC on MT8195 does have an hotplug detection interrupt, but that *must* be > used exclusively for CEC for one important reason. > > While on MT8188 we only have the HDMI (TX) Encoder, MT8195 features both HDMI TX > and HDMI RX and in the specific case of this SoCs, the CEC block is shared between > the two controllers. > > If we use the CEC hotplug detection for HDMI-TX, we wouldn't be able to share the > block with the HDMI-RX without hacks. > > This is why we need to use the HTPLG/PORD provided by the HDMI-TX block instead of > the CEC one. OK, please add this information to commit message so that we know why not use CEC to detect hot plug. Regards, CK > > > This is not a strong suggestion because I don't know why MT8173 choose CEC to detect. > > I just want more function to be common. > > Yeah, I got the point and I would've asked the same question, but for the reasons > that I explained, that's unfortunately not possible :-) > > Cheers, > Angelo > > > > > Regards, > > CK > > > > > > > > Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> > > > --- > > > > > >
