| Message ID | 20180212230132.5402-2-niklas.soderlund+renesas@ragnatech.se (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Niklas, Thank you for the patch. On Tuesday, 13 February 2018 01:01:31 EEST Niklas Söderlund wrote: > Documentation for Renesas R-Car MIPI CSI-2 receiver. The CSI-2 receivers > are located between the video sources (CSI-2 transmitters) and the video > grabbers (VIN) on Gen3 of Renesas R-Car SoC. > > Each CSI-2 device is connected to more than one VIN device which > simultaneously can receive video from the same CSI-2 device. Each VIN > device can also be connected to more than one CSI-2 device. The routing > of which links are used is controlled by the VIN devices. There are only > a few possible routes which are set by hardware limitations, which are > different for each SoC in the Gen3 family. > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> > Acked-by: Rob Herring <robh@kernel.org> > Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > .../bindings/media/renesas,rcar-csi2.txt | 99 +++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 100 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt > > diff --git a/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt > b/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt new file > mode 100644 > index 0000000000000000..6f71f997dc48eee9 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt > @@ -0,0 +1,99 @@ > +Renesas R-Car MIPI CSI-2 > +------------------------ > + > +The R-Car CSI-2 receiver device provides MIPI CSI-2 capabilities for the > +Renesas R-Car family of devices. It is used in conjunction with the > +R-Car VIN module, which provides the video capture capabilities. > + > +Mandatory properties > +-------------------- > + - compatible: Must be one or more of the following > + - "renesas,r8a7795-csi2" for the R8A7795 device. > + - "renesas,r8a7796-csi2" for the R8A7796 device. > + > + - reg: the register base and size for the device registers > + - interrupts: the interrupt for the device > + - clocks: reference to the parent clock > + > +The device node shall contain two 'port' child nodes according to the > +bindings defined in Documentation/devicetree/bindings/media/ > +video-interfaces.txt. Port 0 shall connect to the CSI-2 source. Port 1 > +shall connect to all the R-Car VIN modules that have a hardware > +connection to the CSI-2 receiver. > + > +- Port 0 - Video source (mandatory) > + - Endpoint 0 - sub-node describing the endpoint that is the video source > + > +- Port 1 - VIN instances (optional) > + - One endpoint sub-node for every R-Car VIN instance which is connected > + to the R-Car CSI-2 receiver. > + > +Example: > + > + csi20: csi2@fea80000 { > + compatible = "renesas,r8a7796-csi2"; > + reg = <0 0xfea80000 0 0x10000>; > + interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>; > + clocks = <&cpg CPG_MOD 714>; > + power-domains = <&sysc R8A7796_PD_ALWAYS_ON>; > + resets = <&cpg 714>; > + > + ports { > + #address-cells = <1>; > + #size-cells = <0>; > + > + port@0 { > + #address-cells = <1>; > + #size-cells = <0>; > + > + reg = <0>; > + > + csi20_in: endpoint@0 { > + reg = <0>; > + clock-lanes = <0>; > + data-lanes = <1>; > + remote-endpoint = <&adv7482_txb>; > + }; > + }; > + > + port@1 { > + #address-cells = <1>; > + #size-cells = <0>; > + > + reg = <1>; > + > + csi20vin0: endpoint@0 { > + reg = <0>; > + remote-endpoint = <&vin0csi20>; > + }; > + csi20vin1: endpoint@1 { > + reg = <1>; > + remote-endpoint = <&vin1csi20>; > + }; > + csi20vin2: endpoint@2 { > + reg = <2>; > + remote-endpoint = <&vin2csi20>; > + }; > + csi20vin3: endpoint@3 { > + reg = <3>; > + remote-endpoint = <&vin3csi20>; > + }; > + csi20vin4: endpoint@4 { > + reg = <4>; > + remote-endpoint = <&vin4csi20>; > + }; > + csi20vin5: endpoint@5 { > + reg = <5>; > + remote-endpoint = <&vin5csi20>; > + }; > + csi20vin6: endpoint@6 { > + reg = <6>; > + remote-endpoint = <&vin6csi20>; > + }; > + csi20vin7: endpoint@7 { > + reg = <7>; > + remote-endpoint = <&vin7csi20>; > + }; > + }; > + }; > + }; > diff --git a/MAINTAINERS b/MAINTAINERS > index aee793bff977d413..a0ca030b6bf6b82c 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -8651,6 +8651,7 @@ L: linux-media@vger.kernel.org > L: linux-renesas-soc@vger.kernel.org > T: git git://linuxtv.org/media_tree.git > S: Supported > +F: Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt > F: Documentation/devicetree/bindings/media/rcar_vin.txt > F: drivers/media/platform/rcar-vin/
diff --git a/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt b/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt new file mode 100644 index 0000000000000000..6f71f997dc48eee9 --- /dev/null +++ b/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt @@ -0,0 +1,99 @@ +Renesas R-Car MIPI CSI-2 +------------------------ + +The R-Car CSI-2 receiver device provides MIPI CSI-2 capabilities for the +Renesas R-Car family of devices. It is used in conjunction with the +R-Car VIN module, which provides the video capture capabilities. + +Mandatory properties +-------------------- + - compatible: Must be one or more of the following + - "renesas,r8a7795-csi2" for the R8A7795 device. + - "renesas,r8a7796-csi2" for the R8A7796 device. + + - reg: the register base and size for the device registers + - interrupts: the interrupt for the device + - clocks: reference to the parent clock + +The device node shall contain two 'port' child nodes according to the +bindings defined in Documentation/devicetree/bindings/media/ +video-interfaces.txt. Port 0 shall connect to the CSI-2 source. Port 1 +shall connect to all the R-Car VIN modules that have a hardware +connection to the CSI-2 receiver. + +- Port 0 - Video source (mandatory) + - Endpoint 0 - sub-node describing the endpoint that is the video source + +- Port 1 - VIN instances (optional) + - One endpoint sub-node for every R-Car VIN instance which is connected + to the R-Car CSI-2 receiver. + +Example: + + csi20: csi2@fea80000 { + compatible = "renesas,r8a7796-csi2"; + reg = <0 0xfea80000 0 0x10000>; + interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cpg CPG_MOD 714>; + power-domains = <&sysc R8A7796_PD_ALWAYS_ON>; + resets = <&cpg 714>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + #address-cells = <1>; + #size-cells = <0>; + + reg = <0>; + + csi20_in: endpoint@0 { + reg = <0>; + clock-lanes = <0>; + data-lanes = <1>; + remote-endpoint = <&adv7482_txb>; + }; + }; + + port@1 { + #address-cells = <1>; + #size-cells = <0>; + + reg = <1>; + + csi20vin0: endpoint@0 { + reg = <0>; + remote-endpoint = <&vin0csi20>; + }; + csi20vin1: endpoint@1 { + reg = <1>; + remote-endpoint = <&vin1csi20>; + }; + csi20vin2: endpoint@2 { + reg = <2>; + remote-endpoint = <&vin2csi20>; + }; + csi20vin3: endpoint@3 { + reg = <3>; + remote-endpoint = <&vin3csi20>; + }; + csi20vin4: endpoint@4 { + reg = <4>; + remote-endpoint = <&vin4csi20>; + }; + csi20vin5: endpoint@5 { + reg = <5>; + remote-endpoint = <&vin5csi20>; + }; + csi20vin6: endpoint@6 { + reg = <6>; + remote-endpoint = <&vin6csi20>; + }; + csi20vin7: endpoint@7 { + reg = <7>; + remote-endpoint = <&vin7csi20>; + }; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index aee793bff977d413..a0ca030b6bf6b82c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8651,6 +8651,7 @@ L: linux-media@vger.kernel.org L: linux-renesas-soc@vger.kernel.org T: git git://linuxtv.org/media_tree.git S: Supported +F: Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt F: Documentation/devicetree/bindings/media/rcar_vin.txt F: drivers/media/platform/rcar-vin/