Message ID | 20230922072116.11009-1-moudy.ho@mediatek.com |
---|---|
Headers | show |
Series | introduce more MDP3 components in MT8195 | expand |
On Fri, Sep 22, 2023 at 03:21:11PM +0800, Moudy Ho wrote: > Add a compatible string for the AAL block in MediaTek MT8195 that > is controlled by MDP3. > > Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Thanks, Conor. > --- > .../devicetree/bindings/display/mediatek/mediatek,aal.yaml | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,aal.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,aal.yaml > index 7fd42c8fdc32..b4c28e96dd55 100644 > --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,aal.yaml > +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,aal.yaml > @@ -24,6 +24,7 @@ properties: > - enum: > - mediatek,mt8173-disp-aal > - mediatek,mt8183-disp-aal > + - mediatek,mt8195-mdp3-aal > - items: > - enum: > - mediatek,mt2712-disp-aal > -- > 2.18.0 >
On Fri, Sep 22, 2023 at 04:49:14PM +0100, Conor Dooley wrote: > On Fri, Sep 22, 2023 at 03:21:12PM +0800, Moudy Ho wrote: > > Add a compatible string for the COLOR block in MediaTek MT8195 that > > is controlled by MDP3. > > > > Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> > > --- > > .../devicetree/bindings/display/mediatek/mediatek,color.yaml | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,color.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,color.yaml > > index f21e44092043..b886ca0d89ea 100644 > > --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,color.yaml > > +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,color.yaml > > @@ -26,6 +26,7 @@ properties: > > - mediatek,mt2701-disp-color > > - mediatek,mt8167-disp-color > > - mediatek,mt8173-disp-color > > + - mediatek,mt8195-mdp3-color > > How come this one is a "mdp3" not a "disp"? I don't know what mdp3 means & googling gives me no answers. What's the "disp" one controlled by, since it isn't controlled by mdp3? > > > - items: > > - enum: > > - mediatek,mt7623-disp-color > > -- > > 2.18.0 > >
On 22/09/2023 09:21, Moudy Ho wrote: > Add the fundamental hardware configuration of component TDSHP, > which is controlled by MDP3 on MT8195. > > Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> > --- > .../bindings/media/mediatek,mdp3-tdshp.yaml | 61 +++++++++++++++++++ > 1 file changed, 61 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/mediatek,mdp3-tdshp.yaml > > diff --git a/Documentation/devicetree/bindings/media/mediatek,mdp3-tdshp.yaml b/Documentation/devicetree/bindings/media/mediatek,mdp3-tdshp.yaml > new file mode 100644 > index 000000000000..0ac904cbc2c0 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/mediatek,mdp3-tdshp.yaml > @@ -0,0 +1,61 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/media/mediatek,mdp3-tdshp.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: MediaTek Media Data Path 3 TDSHP > + > +maintainers: > + - Matthias Brugger <matthias.bgg@gmail.com> > + - Moudy Ho <moudy.ho@mediatek.com> > + > +description: > + One of Media Data Path 3 (MDP3) components used to improve image > + sharpness and contrast. > + > +properties: > + compatible: > + enum: > + - mediatek,mt8195-mdp3-tdshp > + > + reg: > + maxItems: 1 > + > + mediatek,gce-client-reg: > + description: > + The register of display function block to be set by gce. There are 4 arguments, > + such as gce node, subsys id, offset and register size. The subsys id that is > + mapping to the register of display function blocks is defined in the gce header > + include/dt-bindings/gce/<chip>-gce.h of each chips. > + $ref: /schemas/types.yaml#/definitions/phandle-array > + items: > + items: > + - description: phandle of GCE > + - description: GCE subsys id > + - description: register offset > + - description: register size > + maxItems: 1 > + > + clocks: > + minItems: 1 NAK. So you ignored all the review. Brilliant. I am getting fed up with Mediatek's approach. It's not the first time. Best regards, Krzysztof
On Sat, 2023-09-23 at 19:36 +0200, Krzysztof Kozlowski wrote: > > External email : Please do not click links or open attachments until > you have verified the sender or the content. > On 22/09/2023 09:21, Moudy Ho wrote: > > Changes since v5: > > - Rebase on v6.6-rc2. > > - Dependent dtsi files: > > > https://patchwork.kernel.org/project/linux-mediatek/list/?series=786511 > > - Depends on: > > Message ID = 20230911074233.31556-5-shawn.sung@mediatek.com > > - Split out common propertis for RDMA. > > - Split each component into independent patches. > > And ignored previously given feedback. That's not the way you should > work with upstream community. It feels like a waste of my time and it > is > not fair that Mediatek is doing it :( > > Best regards, > Krzysztof > Hi Krzysztof, While splitting the bindings, I was so focused that I accidentally missed correcting the properties that needed to be fixed. I sincerely apologize for this oversight. Moving forward, I will handle such matters with greater care. Sincerely, Moudy
On Wed, 2023-09-27 at 10:47 +0100, Conor Dooley wrote: > On Wed, Sep 27, 2023 at 07:19:28AM +0000, Moudy Ho (何宗原) wrote: > > On Fri, 2023-09-22 at 16:51 +0100, Conor Dooley wrote: > > > On Fri, Sep 22, 2023 at 04:49:14PM +0100, Conor Dooley wrote: > > > > On Fri, Sep 22, 2023 at 03:21:12PM +0800, Moudy Ho wrote: > > > > > Add a compatible string for the COLOR block in MediaTek > > > > > MT8195 > > > > > that > > > > > is controlled by MDP3. > > > > > > > > > > Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> > > > > > --- > > > > > .../devicetree/bindings/display/mediatek/mediatek,color.yaml > > > > > > > > > > | 1 + > > > > > 1 file changed, 1 insertion(+) > > > > > > > > > > diff --git > > > > > a/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > ,col > > > > > or.yaml > > > > > b/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > ,col > > > > > or.yaml > > > > > index f21e44092043..b886ca0d89ea 100644 > > > > > --- > > > > > a/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > ,col > > > > > or.yaml > > > > > +++ > > > > > b/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > ,col > > > > > or.yaml > > > > > @@ -26,6 +26,7 @@ properties: > > > > > - mediatek,mt2701-disp-color > > > > > - mediatek,mt8167-disp-color > > > > > - mediatek,mt8173-disp-color > > > > > + - mediatek,mt8195-mdp3-color > > > > > > > > How come this one is a "mdp3" not a "disp"? > > > > > > I don't know what mdp3 means & googling gives me no answers. > > > What's > > > the > > > "disp" one controlled by, since it isn't controlled by mdp3? > > > > > > > Hi Conor, > > > > Mediatek's Media Data Path ver.3 (MDP3) is associated with MMSYS > > and > > acts as an independent driver that operates between VDEC and DISP. > > By controlling multiple components, it carries out tasks like > > converting color formats, resizing, and applying specific Picture > > Quality (PQ) effects. > > The driver can be found at "driver/media/platform/mediatek/mdp3". > > Since the same hardware components are configured in both MDP3 and > > DISP, considering previous discussions, I attemped to integrate > > into a > > single binding, named after the controlling user. > > I'm still kinda struggling to understand this. Do you mean that the > hardware can be controlled by either of the disp and mdp3 drivers, > and > a compatible containing "disp" would use one driver, and one > containing > "mdp3" would use another? > Hi Conor, Sorry for any confusion caused by the software information. In the video pipeline, after decoding, the data flows sequentially through two subsystems: MDP and DISP. Each subsystems has multiple IPs, with some serving the same functionality as COLOR mentioned here. However, these IPs cannot be controlled by different subsystems. Therefore, I included the name of the subsystem after SoC to identify the configuration's location. Is this approach feasible? Sincerely, Moudy
On Thu, Sep 28, 2023 at 02:52:23AM +0000, Moudy Ho (何宗原) wrote: > On Wed, 2023-09-27 at 10:47 +0100, Conor Dooley wrote: > > On Wed, Sep 27, 2023 at 07:19:28AM +0000, Moudy Ho (何宗原) wrote: > > > On Fri, 2023-09-22 at 16:51 +0100, Conor Dooley wrote: > > > > On Fri, Sep 22, 2023 at 04:49:14PM +0100, Conor Dooley wrote: > > > > > On Fri, Sep 22, 2023 at 03:21:12PM +0800, Moudy Ho wrote: > > > > > > Add a compatible string for the COLOR block in MediaTek > > > > > > MT8195 > > > > > > that > > > > > > is controlled by MDP3. > > > > > > > > > > > > Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> > > > > > > --- > > > > > > .../devicetree/bindings/display/mediatek/mediatek,color.yaml > > > > > > > > > > > > | 1 + > > > > > > 1 file changed, 1 insertion(+) > > > > > > > > > > > > diff --git > > > > > > a/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > > ,col > > > > > > or.yaml > > > > > > b/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > > ,col > > > > > > or.yaml > > > > > > index f21e44092043..b886ca0d89ea 100644 > > > > > > --- > > > > > > a/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > > ,col > > > > > > or.yaml > > > > > > +++ > > > > > > b/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > > ,col > > > > > > or.yaml > > > > > > @@ -26,6 +26,7 @@ properties: > > > > > > - mediatek,mt2701-disp-color > > > > > > - mediatek,mt8167-disp-color > > > > > > - mediatek,mt8173-disp-color > > > > > > + - mediatek,mt8195-mdp3-color > > > > > > > > > > How come this one is a "mdp3" not a "disp"? > > > > > > > > I don't know what mdp3 means & googling gives me no answers. > > > > What's > > > > the > > > > "disp" one controlled by, since it isn't controlled by mdp3? > > > > > > > Mediatek's Media Data Path ver.3 (MDP3) is associated with MMSYS > > > and > > > acts as an independent driver that operates between VDEC and DISP. > > > By controlling multiple components, it carries out tasks like > > > converting color formats, resizing, and applying specific Picture > > > Quality (PQ) effects. > > > The driver can be found at "driver/media/platform/mediatek/mdp3". > > > Since the same hardware components are configured in both MDP3 and > > > DISP, considering previous discussions, I attemped to integrate > > > into a > > > single binding, named after the controlling user. > > > > I'm still kinda struggling to understand this. Do you mean that the > > hardware can be controlled by either of the disp and mdp3 drivers, > > and > > a compatible containing "disp" would use one driver, and one > > containing > > "mdp3" would use another? > > > Sorry for any confusion caused by the software information. In the > video pipeline, after decoding, the data flows sequentially through two > subsystems: MDP and DISP. Each subsystems has multiple IPs, with some > serving the same functionality as COLOR mentioned here. However, these > IPs cannot be controlled by different subsystems. Therefore, I included > the name of the subsystem after SoC to identify the configuration's > location. Is this approach feasible? I'll have to leave things to the likes of Laurent to comment here I think. I don't understand this hardware well enough to have a useful opinion. It would seem like a different part of the datapath is a different device that should be documented separately, but I don't know enough to say for sure, sorry.
Il 28/09/23 18:49, Conor Dooley ha scritto: > On Thu, Sep 28, 2023 at 02:52:23AM +0000, Moudy Ho (何宗原) wrote: >> On Wed, 2023-09-27 at 10:47 +0100, Conor Dooley wrote: >>> On Wed, Sep 27, 2023 at 07:19:28AM +0000, Moudy Ho (何宗原) wrote: >>>> On Fri, 2023-09-22 at 16:51 +0100, Conor Dooley wrote: >>>>> On Fri, Sep 22, 2023 at 04:49:14PM +0100, Conor Dooley wrote: >>>>>> On Fri, Sep 22, 2023 at 03:21:12PM +0800, Moudy Ho wrote: >>>>>>> Add a compatible string for the COLOR block in MediaTek >>>>>>> MT8195 >>>>>>> that >>>>>>> is controlled by MDP3. >>>>>>> >>>>>>> Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> >>>>>>> --- >>>>>>> .../devicetree/bindings/display/mediatek/mediatek,color.yaml >>>>>>> >>>>>>> | 1 + >>>>>>> 1 file changed, 1 insertion(+) >>>>>>> >>>>>>> diff --git >>>>>>> a/Documentation/devicetree/bindings/display/mediatek/mediatek >>>>>>> ,col >>>>>>> or.yaml >>>>>>> b/Documentation/devicetree/bindings/display/mediatek/mediatek >>>>>>> ,col >>>>>>> or.yaml >>>>>>> index f21e44092043..b886ca0d89ea 100644 >>>>>>> --- >>>>>>> a/Documentation/devicetree/bindings/display/mediatek/mediatek >>>>>>> ,col >>>>>>> or.yaml >>>>>>> +++ >>>>>>> b/Documentation/devicetree/bindings/display/mediatek/mediatek >>>>>>> ,col >>>>>>> or.yaml >>>>>>> @@ -26,6 +26,7 @@ properties: >>>>>>> - mediatek,mt2701-disp-color >>>>>>> - mediatek,mt8167-disp-color >>>>>>> - mediatek,mt8173-disp-color >>>>>>> + - mediatek,mt8195-mdp3-color >>>>>> >>>>>> How come this one is a "mdp3" not a "disp"? >>>>> >>>>> I don't know what mdp3 means & googling gives me no answers. >>>>> What's >>>>> the >>>>> "disp" one controlled by, since it isn't controlled by mdp3? >>>>> > >>>> Mediatek's Media Data Path ver.3 (MDP3) is associated with MMSYS >>>> and >>>> acts as an independent driver that operates between VDEC and DISP. >>>> By controlling multiple components, it carries out tasks like >>>> converting color formats, resizing, and applying specific Picture >>>> Quality (PQ) effects. >>>> The driver can be found at "driver/media/platform/mediatek/mdp3". >>>> Since the same hardware components are configured in both MDP3 and >>>> DISP, considering previous discussions, I attemped to integrate >>>> into a >>>> single binding, named after the controlling user. >>> >>> I'm still kinda struggling to understand this. Do you mean that the >>> hardware can be controlled by either of the disp and mdp3 drivers, >>> and >>> a compatible containing "disp" would use one driver, and one >>> containing >>> "mdp3" would use another? >>> > >> Sorry for any confusion caused by the software information. In the >> video pipeline, after decoding, the data flows sequentially through two >> subsystems: MDP and DISP. Each subsystems has multiple IPs, with some >> serving the same functionality as COLOR mentioned here. However, these >> IPs cannot be controlled by different subsystems. Therefore, I included >> the name of the subsystem after SoC to identify the configuration's >> location. Is this approach feasible? > > I'll have to leave things to the likes of Laurent to comment here I > think. I don't understand this hardware well enough to have a useful > opinion. It would seem like a different part of the datapath is a > different device that should be documented separately, but I don't know > enough to say for sure, sorry. Hardware speaking, it's not a different device: those all reside in the same block, except they are configured to route their I/O *either* to the display pipeline, *or* to the MDP3 pipeline. I would agree though in that this could be more flexible, as in, not having a requirement to say "mdp3" or "disp", and managing the COLOR blocks generically and letting the drivers to choose the actual path transparently from what the devicetree compatible is, but there's no practical point in doing this in the end, because there is an enough number of (for example, COLOR) blocks such that one can be completely reserved to MDP3 and one completely reserved to DISP. So, we don't *need* this flexibility, but would be nice to have for different (unexistant, basically) usecases... The thing is, if we go for the maximum flexibility, the drawback is that we'd see a number of nodes like shared_block: something@somewhere { compatible = "mediatek,something"; } mdp3: dma-controller@14001000 { ...... mediatek,color = <&color0>; mediatek,stitch = <&stitch0>; mediatek,hdr = <&hdr0>; mediatek,aal = <&aal0>; .... long list of another 10 components } display: something@somewhere { ...... an even longer list than the MDP3 one } ...or perhaps even a graph, which is even longer in the end. I'm not against this kind of structure, but I wonder if it's worth it. Cheers, Angelo
On Fri, Sep 29, 2023 at 10:42:58AM +0200, AngeloGioacchino Del Regno wrote: > Il 28/09/23 18:49, Conor Dooley ha scritto: > > On Thu, Sep 28, 2023 at 02:52:23AM +0000, Moudy Ho (何宗原) wrote: > > > On Wed, 2023-09-27 at 10:47 +0100, Conor Dooley wrote: > > > > On Wed, Sep 27, 2023 at 07:19:28AM +0000, Moudy Ho (何宗原) wrote: > > > > > On Fri, 2023-09-22 at 16:51 +0100, Conor Dooley wrote: > > > > > > On Fri, Sep 22, 2023 at 04:49:14PM +0100, Conor Dooley wrote: > > > > > > > On Fri, Sep 22, 2023 at 03:21:12PM +0800, Moudy Ho wrote: > > > > > > > > Add a compatible string for the COLOR block in MediaTek > > > > > > > > MT8195 > > > > > > > > that > > > > > > > > is controlled by MDP3. > > > > > > > > > > > > > > > > Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> > > > > > > > > --- > > > > > > > > .../devicetree/bindings/display/mediatek/mediatek,color.yaml > > > > > > > > | 1 + > > > > > > > > 1 file changed, 1 insertion(+) > > > > > > > > > > > > > > > > diff --git > > > > > > > > a/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > > > > ,col > > > > > > > > or.yaml > > > > > > > > b/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > > > > ,col > > > > > > > > or.yaml > > > > > > > > index f21e44092043..b886ca0d89ea 100644 > > > > > > > > --- > > > > > > > > a/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > > > > ,col > > > > > > > > or.yaml > > > > > > > > +++ > > > > > > > > b/Documentation/devicetree/bindings/display/mediatek/mediatek > > > > > > > > ,col > > > > > > > > or.yaml > > > > > > > > @@ -26,6 +26,7 @@ properties: > > > > > > > > - mediatek,mt2701-disp-color > > > > > > > > - mediatek,mt8167-disp-color > > > > > > > > - mediatek,mt8173-disp-color > > > > > > > > + - mediatek,mt8195-mdp3-color > > > > > > > > > > > > > > How come this one is a "mdp3" not a "disp"? > > > > > > > > > > > > I don't know what mdp3 means & googling gives me no answers. > > > > > > What's > > > > > > the > > > > > > "disp" one controlled by, since it isn't controlled by mdp3? > > > > > > > > > > > > > Mediatek's Media Data Path ver.3 (MDP3) is associated with MMSYS > > > > > and > > > > > acts as an independent driver that operates between VDEC and DISP. > > > > > By controlling multiple components, it carries out tasks like > > > > > converting color formats, resizing, and applying specific Picture > > > > > Quality (PQ) effects. > > > > > The driver can be found at "driver/media/platform/mediatek/mdp3". > > > > > Since the same hardware components are configured in both MDP3 and > > > > > DISP, considering previous discussions, I attemped to integrate > > > > > into a > > > > > single binding, named after the controlling user. > > > > > > > > I'm still kinda struggling to understand this. Do you mean that the > > > > hardware can be controlled by either of the disp and mdp3 drivers, > > > > and > > > > a compatible containing "disp" would use one driver, and one > > > > containing > > > > "mdp3" would use another? > > > > > > > > > Sorry for any confusion caused by the software information. In the > > > video pipeline, after decoding, the data flows sequentially through two > > > subsystems: MDP and DISP. Each subsystems has multiple IPs, with some > > > serving the same functionality as COLOR mentioned here. However, these > > > IPs cannot be controlled by different subsystems. Therefore, I included > > > the name of the subsystem after SoC to identify the configuration's > > > location. Is this approach feasible? > > > > I'll have to leave things to the likes of Laurent to comment here I > > think. I don't understand this hardware well enough to have a useful > > opinion. It would seem like a different part of the datapath is a > > different device that should be documented separately, but I don't know > > enough to say for sure, sorry. > > Hardware speaking, it's not a different device: those all reside in the > same block, except they are configured to route their I/O *either* to the > display pipeline, *or* to the MDP3 pipeline. Is it runtime configurable? > I would agree though in that this could be more flexible, as in, not > having a requirement to say "mdp3" or "disp", and managing the COLOR > blocks generically and letting the drivers to choose the actual path > transparently from what the devicetree compatible is, but there's no > practical point in doing this in the end, because there is an enough > number of (for example, COLOR) blocks such that one can be completely > reserved to MDP3 and one completely reserved to DISP. > > So, we don't *need* this flexibility, but would be nice to have for > different (unexistant, basically) usecases... > > The thing is, if we go for the maximum flexibility, the drawback is > that we'd see a number of nodes like > > shared_block: something@somewhere { > compatible = "mediatek,something"; > } > > mdp3: dma-controller@14001000 { > ...... > mediatek,color = <&color0>; > mediatek,stitch = <&stitch0>; > mediatek,hdr = <&hdr0>; > mediatek,aal = <&aal0>; > .... > long list of another 10 components > } > > display: something@somewhere { > ...... > an even longer list than the MDP3 one > } > > ...or perhaps even a graph, which is even longer in the end. > > I'm not against this kind of structure, but I wonder if it's worth it. I have no idea, but it sounds like it isn't. Really what happened here, is not me having a particular thing I want to see, is getting a response that implied that there were two different compatibles for the same hardware, controlled by different drivers. It does seem to be that way at present, and this is not something I am willing to ack etc. That's not to say that I am _nacking_ it, just that I don't understand this enough to ack something that we usually tell people not to do.