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author | Jacopo Mondi <jacopo+renesas@jmondi.org> | 2018-02-21 12:47:55 -0500 |
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committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-02-26 08:43:09 -0500 |
commit | a444e5184f329738691b06ed31addaa0edb6aa01 (patch) | |
tree | 4145a70f73270ae3aed2bff7cff8b6855e52eb0e /Documentation/devicetree/bindings/media/renesas,ceu.txt | |
parent | 52e17089d1850774d2ef583cdef2b060b84fca8c (diff) |
media: dt-bindings: media: Add Renesas CEU bindings
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>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/devicetree/bindings/media/renesas,ceu.txt')
-rw-r--r-- | Documentation/devicetree/bindings/media/renesas,ceu.txt | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/media/renesas,ceu.txt b/Documentation/devicetree/bindings/media/renesas,ceu.txt new file mode 100644 index 000000000000..3fc66dfb192c --- /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/A1H + and RZ/A1M 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>; + }; + }; + }; +}; |