| Message ID | 1515765849-10345-2-git-send-email-jacopo+renesas@jmondi.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 01/12/2018 03:04 PM, Jacopo Mondi wrote: > Add bindings documentation for Renesas Capture Engine Unit (CEU). > > Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> > Reviewed-by: Rob Herring <robh@kernel.org> > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Regards, Hans > --- > .../devicetree/bindings/media/renesas,ceu.txt | 81 ++++++++++++++++++++++ > 1 file changed, 81 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/renesas,ceu.txt > > diff --git a/Documentation/devicetree/bindings/media/renesas,ceu.txt b/Documentation/devicetree/bindings/media/renesas,ceu.txt > new file mode 100644 > index 0000000..590ee27 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/renesas,ceu.txt > @@ -0,0 +1,81 @@ > +Renesas Capture Engine Unit (CEU) > +---------------------------------------------- > + > +The Capture Engine Unit is the image capture interface found in the Renesas > +SH Mobile and RZ SoCs. > + > +The interface supports a single parallel input with data bus width of 8 or 16 > +bits. > + > +Required properties: > +- compatible: Shall be "renesas,r7s72100-ceu" for CEU units found in RZ/A1-H > + and RZ/A1-M SoCs. > +- reg: Registers address base and size. > +- interrupts: The interrupt specifier. > + > +The CEU supports a single parallel input and should contain a single 'port' > +subnode with a single 'endpoint'. Connection to input devices are modeled > +according to the video interfaces OF bindings specified in: > +Documentation/devicetree/bindings/media/video-interfaces.txt > + > +Optional endpoint properties applicable to parallel input bus described in > +the above mentioned "video-interfaces.txt" file are supported. > + > +- hsync-active: Active state of the HSYNC signal, 0/1 for LOW/HIGH respectively. > + If property is not present, default is active high. > +- vsync-active: Active state of the VSYNC signal, 0/1 for LOW/HIGH respectively. > + If property is not present, default is active high. > + > +Example: > + > +The example describes the connection between the Capture Engine Unit and an > +OV7670 image sensor connected to i2c1 interface. > + > +ceu: ceu@e8210000 { > + reg = <0xe8210000 0x209c>; > + compatible = "renesas,r7s72100-ceu"; > + interrupts = <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>; > + > + pinctrl-names = "default"; > + pinctrl-0 = <&vio_pins>; > + > + status = "okay"; > + > + port { > + ceu_in: endpoint { > + remote-endpoint = <&ov7670_out>; > + > + hsync-active = <1>; > + vsync-active = <0>; > + }; > + }; > +}; > + > +i2c1: i2c@fcfee400 { > + pinctrl-names = "default"; > + pinctrl-0 = <&i2c1_pins>; > + > + status = "okay"; > + > + clock-frequency = <100000>; > + > + ov7670: camera@21 { > + compatible = "ovti,ov7670"; > + reg = <0x21>; > + > + pinctrl-names = "default"; > + pinctrl-0 = <&vio_pins>; > + > + reset-gpios = <&port3 11 GPIO_ACTIVE_LOW>; > + powerdown-gpios = <&port3 12 GPIO_ACTIVE_HIGH>; > + > + port { > + ov7670_out: endpoint { > + remote-endpoint = <&ceu_in>; > + > + hsync-active = <1>; > + vsync-active = <0>; > + }; > + }; > + }; > +}; > -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/media/renesas,ceu.txt b/Documentation/devicetree/bindings/media/renesas,ceu.txt new file mode 100644 index 0000000..590ee27 --- /dev/null +++ b/Documentation/devicetree/bindings/media/renesas,ceu.txt @@ -0,0 +1,81 @@ +Renesas Capture Engine Unit (CEU) +---------------------------------------------- + +The Capture Engine Unit is the image capture interface found in the Renesas +SH Mobile and RZ SoCs. + +The interface supports a single parallel input with data bus width of 8 or 16 +bits. + +Required properties: +- compatible: Shall be "renesas,r7s72100-ceu" for CEU units found in RZ/A1-H + and RZ/A1-M SoCs. +- reg: Registers address base and size. +- interrupts: The interrupt specifier. + +The CEU supports a single parallel input and should contain a single 'port' +subnode with a single 'endpoint'. Connection to input devices are modeled +according to the video interfaces OF bindings specified in: +Documentation/devicetree/bindings/media/video-interfaces.txt + +Optional endpoint properties applicable to parallel input bus described in +the above mentioned "video-interfaces.txt" file are supported. + +- hsync-active: Active state of the HSYNC signal, 0/1 for LOW/HIGH respectively. + If property is not present, default is active high. +- vsync-active: Active state of the VSYNC signal, 0/1 for LOW/HIGH respectively. + If property is not present, default is active high. + +Example: + +The example describes the connection between the Capture Engine Unit and an +OV7670 image sensor connected to i2c1 interface. + +ceu: ceu@e8210000 { + reg = <0xe8210000 0x209c>; + compatible = "renesas,r7s72100-ceu"; + interrupts = <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>; + + pinctrl-names = "default"; + pinctrl-0 = <&vio_pins>; + + status = "okay"; + + port { + ceu_in: endpoint { + remote-endpoint = <&ov7670_out>; + + hsync-active = <1>; + vsync-active = <0>; + }; + }; +}; + +i2c1: i2c@fcfee400 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1_pins>; + + status = "okay"; + + clock-frequency = <100000>; + + ov7670: camera@21 { + compatible = "ovti,ov7670"; + reg = <0x21>; + + pinctrl-names = "default"; + pinctrl-0 = <&vio_pins>; + + reset-gpios = <&port3 11 GPIO_ACTIVE_LOW>; + powerdown-gpios = <&port3 12 GPIO_ACTIVE_HIGH>; + + port { + ov7670_out: endpoint { + remote-endpoint = <&ceu_in>; + + hsync-active = <1>; + vsync-active = <0>; + }; + }; + }; +};