| Message ID | b2964da9-4389-b277-0e6f-df41f39326b7@cogentembedded.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | dt-bindings: media: Renesas R-Car IMR bindings | expand |
CC Laurent, Kieran On Mon, Mar 25, 2019 at 7:14 PM Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> wrote: > The image renderer (IMR), or the distortion correction engine, is a > drawing processor with a simple instruction system capable of referencing > video capture data or data in an external memory as the 2D texture data > and performing texture mapping and drawing with respect to any shape that > is split into triangular objects. > > Document the device tree bindings for the image renderer light extended 4 > (IMR-LX4) found in the R-Car gen3 SoCs... > > Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> > Acked-by: Rob Herring <robh@kernel.org> > > --- > This patch is against the 'master' branch of the 'media_tree.git' repo. > > This patch has been split from the large IMR driver patch (which would need > much more work), it fixes checkpatch.pl's warnings on the SoC .dtsi files > which have been already merged (the bindings didn't change since v1 of the > driver patch). > > Documentation/devicetree/bindings/media/rcar_imr.txt | 27 +++++++++++++++++++ > 1 file changed, 27 insertions(+) > > Index: media_tree/Documentation/devicetree/bindings/media/rcar_imr.txt > =================================================================== > --- /dev/null > +++ media_tree/Documentation/devicetree/bindings/media/rcar_imr.txt > @@ -0,0 +1,27 @@ > +Renesas R-Car Image Renderer (Distortion Correction Engine) > +----------------------------------------------------------- > + > +The image renderer, or the distortion correction engine, is a drawing processor > +with a simple instruction system capable of referencing video capture data or > +data in an external memory as 2D texture data and performing texture mapping > +and drawing with respect to any shape that is split into triangular objects. > + > +Required properties: > + > +- compatible: "renesas,<soctype>-imr-lx4", "renesas,imr-lx4" as a fallback for > + the image renderer light extended 4 (IMR-LX4) found in the R-Car gen3 SoCs, > + where the examples with <soctype> are: > + - "renesas,r8a7795-imr-lx4" for R-Car H3, > + - "renesas,r8a7796-imr-lx4" for R-Car M3-W. > +- reg: offset and length of the register block; > +- interrupts: single interrupt specifier; > +- clocks: single clock phandle/specifier pair. power-domains? (they're usually not in the always-on area on R-Car Gen3) resets? > + > +Example: > + > + imr-lx4@fe860000 { > + compatible = "renesas,r8a7795-imr-lx4", "renesas,imr-lx4"; > + reg = <0 0xfe860000 0 0x2000>; > + interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>; > + clocks = <&cpg CPG_MOD 823>; > + }; Gr{oetje,eeting}s, Geert
Index: media_tree/Documentation/devicetree/bindings/media/rcar_imr.txt =================================================================== --- /dev/null +++ media_tree/Documentation/devicetree/bindings/media/rcar_imr.txt @@ -0,0 +1,27 @@ +Renesas R-Car Image Renderer (Distortion Correction Engine) +----------------------------------------------------------- + +The image renderer, or the distortion correction engine, is a drawing processor +with a simple instruction system capable of referencing video capture data or +data in an external memory as 2D texture data and performing texture mapping +and drawing with respect to any shape that is split into triangular objects. + +Required properties: + +- compatible: "renesas,<soctype>-imr-lx4", "renesas,imr-lx4" as a fallback for + the image renderer light extended 4 (IMR-LX4) found in the R-Car gen3 SoCs, + where the examples with <soctype> are: + - "renesas,r8a7795-imr-lx4" for R-Car H3, + - "renesas,r8a7796-imr-lx4" for R-Car M3-W. +- reg: offset and length of the register block; +- interrupts: single interrupt specifier; +- clocks: single clock phandle/specifier pair. + +Example: + + imr-lx4@fe860000 { + compatible = "renesas,r8a7795-imr-lx4", "renesas,imr-lx4"; + reg = <0 0xfe860000 0 0x2000>; + interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cpg CPG_MOD 823>; + };