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Message-ID: <20170803191415.iyyzjsvlyviftalj@rob-hp-laptop>
Date: Thu, 3 Aug 2017 14:14:15 -0500
From: Rob Herring <robh@...nel.org>
To: Yong Deng <yong.deng@...ewell.com>
Cc: maxime.ripard@...e-electrons.com,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Chen-Yu Tsai <wens@...e.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"David S. Miller" <davem@...emloft.net>,
Hans Verkuil <hverkuil@...all.nl>,
Arnd Bergmann <arnd@...db.de>,
Hugues Fruchet <hugues.fruchet@...com>,
Yannick Fertre <yannick.fertre@...com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Benoit Parrot <bparrot@...com>,
Benjamin Gaignard <benjamin.gaignard@...aro.org>,
Jean-Christophe Trotin <jean-christophe.trotin@...com>,
Ramesh Shanmugasundaram <ramesh.shanmugasundaram@...renesas.com>,
Minghsiu Tsai <minghsiu.tsai@...iatek.com>,
Krzysztof Kozlowski <krzk@...nel.org>,
Robert Jarzmik <robert.jarzmik@...e.fr>,
linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-sunxi@...glegroups.com
Subject: Re: [PATCH v2 2/3] dt-bindings: media: Add Allwinner V3s Camera
Sensor Interface (CSI)
On Thu, Jul 27, 2017 at 01:01:36PM +0800, Yong Deng wrote:
> Add binding documentation for Allwinner V3s CSI.
>
> Signed-off-by: Yong Deng <yong.deng@...ewell.com>
> ---
> .../devicetree/bindings/media/sun6i-csi.txt | 49 ++++++++++++++++++++++
> 1 file changed, 49 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/sun6i-csi.txt
>
> diff --git a/Documentation/devicetree/bindings/media/sun6i-csi.txt b/Documentation/devicetree/bindings/media/sun6i-csi.txt
> new file mode 100644
> index 0000000..f8d83f6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt
> @@ -0,0 +1,49 @@
> +Allwinner V3s Camera Sensor Interface
> +------------------------------
> +
> +Required properties:
> + - compatible: value must be "allwinner,sun8i-v3s-csi"
> + - reg: base address and size of the memory-mapped region.
> + - interrupts: interrupt associated to this IP
> + - clocks: phandles to the clocks feeding the CSI
> + * ahb: the CSI interface clock
> + * mod: the CSI module clock
> + * ram: the CSI DRAM clock
> + - clock-names: the clock names mentioned above
> + - resets: phandles to the reset line driving the CSI
> +
> +- ports: A ports node with endpoint definitions as defined in
> + Documentation/devicetree/bindings/media/video-interfaces.txt.
Need to be explicit about how many ports and endpoints and what each one
represents.
> +
> +Example:
> +
> + csi1: csi@...b4000 {
> + compatible = "allwinner,sun8i-v3s-csi";
> + reg = <0x01cb4000 0x1000>;
> + interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ccu CLK_BUS_CSI>,
> + <&ccu CLK_CSI1_SCLK>,
> + <&ccu CLK_DRAM_CSI>;
> + clock-names = "ahb", "mod", "ram";
> + resets = <&ccu RST_BUS_CSI>;
> +
> + port {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* Parallel bus endpoint */
> + csi1_ep: endpoint {
> + remote-endpoint = <&adv7611_ep>;
> + bus-width = <16>;
> + data-shift = <0>;
> +
> + /* If hsync-active/vsync-active are missing,
> + embedded BT.656 sync is used */
> + hsync-active = <0>; /* Active low */
> + vsync-active = <0>; /* Active low */
> + data-active = <1>; /* Active high */
> + pclk-sample = <1>; /* Rising */
> + };
> + };
> + };
> +
> --
> 1.8.3.1
>
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