| Message ID | 1461455400-28767-2-git-send-email-laurent.pinchart+renesas@ideasonboard.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
Hi Laurent, On Sun, Apr 24, 2016 at 1:49 AM, Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> wrote: > The FCP is a companion module of video processing modules in the Renesas > R-Car Gen3 SoCs. It provides data compression and decompression, data > caching, and conversion of AXI transaction in order to reduce the memory transactions > bandwidth. > > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> > --- > .../devicetree/bindings/media/renesas,fcp.txt | 31 ++++++++++++++++++++++ > 1 file changed, 31 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/renesas,fcp.txt > > Cc: devicetree@vger.kernel.org > > diff --git a/Documentation/devicetree/bindings/media/renesas,fcp.txt b/Documentation/devicetree/bindings/media/renesas,fcp.txt > new file mode 100644 > index 000000000000..46beec97d625 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/renesas,fcp.txt > @@ -0,0 +1,31 @@ > +Renesas R-Car Frame Compression Processor (FCP) > +----------------------------------------------- > + > +The FCP is a companion module of video processing modules in the Renesas R-Car > +Gen3 SoCs. It provides data compression and decompression, data caching, and > +conversion of AXI transaction in order to reduce the memory bandwidth. transactions > +There are three types of FCP whose configuration and behaviour highly depend > +on the module they are paired with. > + - compatible: Must be one or more of the following + + - "renesas,r8a7795-fcpv" for R8A7795 (R-Car H3) compatible 'FCP for VSP' + - "renesas,fcpv" for generic compatible 'FCP for VSP' As you list only one compatible value, I guess the type is determined automatically at run-time? Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
Hi Geert, Thank you for the review. On Monday 25 Apr 2016 09:32:04 Geert Uytterhoeven wrote: > On Sun, Apr 24, 2016 at 1:49 AM, Laurent Pinchart wrote: > > The FCP is a companion module of video processing modules in the Renesas > > R-Car Gen3 SoCs. It provides data compression and decompression, data > > caching, and conversion of AXI transaction in order to reduce the memory > > transactions > > > bandwidth. > > > > Signed-off-by: Laurent Pinchart > > <laurent.pinchart+renesas@ideasonboard.com> > > --- > > > > .../devicetree/bindings/media/renesas,fcp.txt | 31 +++++++++++++++++ > > 1 file changed, 31 insertions(+) > > create mode 100644 > > Documentation/devicetree/bindings/media/renesas,fcp.txt > > > > Cc: devicetree@vger.kernel.org > > > > diff --git a/Documentation/devicetree/bindings/media/renesas,fcp.txt > > b/Documentation/devicetree/bindings/media/renesas,fcp.txt new file mode > > 100644 > > index 000000000000..46beec97d625 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/media/renesas,fcp.txt > > @@ -0,0 +1,31 @@ > > +Renesas R-Car Frame Compression Processor (FCP) > > +----------------------------------------------- > > + > > +The FCP is a companion module of video processing modules in the Renesas > > R-Car +Gen3 SoCs. It provides data compression and decompression, data > > caching, and +conversion of AXI transaction in order to reduce the memory > > bandwidth. > > transactions I'll fix the typos. > > +There are three types of FCP whose configuration and behaviour highly > > depend +on the module they are paired with. > > + - compatible: Must be one or more of the following > + > + - "renesas,r8a7795-fcpv" for R8A7795 (R-Car H3) compatible 'FCP for VSP' > + - "renesas,fcpv" for generic compatible 'FCP for VSP' > > As you list only one compatible value, I guess the type is determined > automatically at run-time? No, it's just that the bindings only support the FCPV at the moment, the other two variants are not supported yet.
diff --git a/Documentation/devicetree/bindings/media/renesas,fcp.txt b/Documentation/devicetree/bindings/media/renesas,fcp.txt new file mode 100644 index 000000000000..46beec97d625 --- /dev/null +++ b/Documentation/devicetree/bindings/media/renesas,fcp.txt @@ -0,0 +1,31 @@ +Renesas R-Car Frame Compression Processor (FCP) +----------------------------------------------- + +The FCP is a companion module of video processing modules in the Renesas R-Car +Gen3 SoCs. It provides data compression and decompression, data caching, and +conversion of AXI transaction in order to reduce the memory bandwidth. + +There are three types of FCP whose configuration and behaviour highly depend +on the module they are paired with. + + - compatible: Must be one or more of the following + + - "renesas,r8a7795-fcpv" for R8A7795 (R-Car H3) compatible 'FCP for VSP' + - "renesas,fcpv" for generic compatible 'FCP for VSP' + + When compatible with the generic version, nodes must list the + SoC-specific version corresponding to the platform first, followed by the + family-specific and/or generic versions. + + - reg: the register base and size for the device registers + - clocks: Reference to the functional clock + + +Device node example +------------------- + + fcpvd1: fcp@fea2f000 { + compatible = "renesas,r8a7795-fcpv", "renesas,fcpv"; + reg = <0 0xfea2f000 0 0x200>; + clocks = <&cpg CPG_MOD 602>; + };
The FCP is a companion module of video processing modules in the Renesas R-Car Gen3 SoCs. It provides data compression and decompression, data caching, and conversion of AXI transaction in order to reduce the memory bandwidth. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> --- .../devicetree/bindings/media/renesas,fcp.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/renesas,fcp.txt Cc: devicetree@vger.kernel.org