linux-kernel - Re: [v4 1/6] dt-bindings: media: Document bindings for DW MIPI CSI-2 Host

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Message-ID: <ae0ffeca-9305-b5a2-3480-da623d15ce67@microchip.com>
Date:   Tue, 9 Jul 2019 14:33:50 +0000
From:   <Eugen.Hristev@...rochip.com>
To:     <Luis.Oliveira@...opsys.com>, <mchehab@...nel.org>,
        <davem@...emloft.net>, <gregkh@...uxfoundation.org>,
        <Jonathan.Cameron@...wei.com>, <robh@...nel.org>,
        <Nicolas.Ferre@...rochip.com>, <paulmck@...ux.ibm.com>,
        <mark.rutland@....com>, <kishon@...com>,
        <devicetree@...r.kernel.org>, <linux-media@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <Joao.Pinto@...opsys.com>
Subject: Re: [v4 1/6] dt-bindings: media: Document bindings for DW MIPI CSI-2
 Host



On 11.06.2019 22:20, Luis Oliveira wrote:
> From: Luis Oliveira <lolivei@...opsys.com>
> 
> Add bindings for Synopsys DesignWare MIPI CSI-2 host.
> 
> Signed-off-by: Luis Oliveira <lolivei@...opsys.com>
> ---
> Changelog
> v3-v4
> - remove "plat" from the block name @rob @laurent
> - remove "phy-names" when single-entry @rob
> - remove "snps,output-type" -> went to the driver config @laurent
> 
>   .../devicetree/bindings/media/snps,dw-csi.txt      | 41 ++++++++++++++++++++++
>   1 file changed, 41 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/media/snps,dw-csi.txt
> 
> diff --git a/Documentation/devicetree/bindings/media/snps,dw-csi.txt b/Documentation/devicetree/bindings/media/snps,dw-csi.txt
> new file mode 100644
> index 0000000..613b7f9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/snps,dw-csi.txt
> @@ -0,0 +1,41 @@
> +Synopsys DesignWare CSI-2 Host controller
> +
> +Description
> +-----------
> +
> +This HW block is used to receive image coming from an MIPI CSI-2 compatible
> +camera.
> +
> +Required properties:
> +- compatible		: shall be "snps,dw-csi"
> +- reg			: physical base address and size of the device memory
> +			  mapped registers;
> +- interrupts		: DW CSI-2 Host interrupts
> +- phys			: List of one PHY specifier (as defined in
> +			  Documentation/devicetree/bindings/phy/phy-bindings.txt).
> +			  This PHY is a MIPI DPHY working in RX mode.
> +- resets		: Reference to a reset controller (optional)
> +
> +The per-board settings:
> + - port sub-node describing a single endpoint connected to the camera as
> +   described in video-interfaces.txt[1].
> +
> +Example:
> +
> +	csi2: csi2@...0 {
> +		compatible = "snps,dw-csi";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		reg = < 0x03000 0x7FF>;
> +		phys = <&mipi_dphy_rx>;
> +		resets = <&dw_rst 1>;
> +		interrupts = <2>;
> +
> +		port@0 {
> +			reg = <0>;
> +			csi_ep1: endpoint {
> +				remote-endpoint = <&camera_1>;
> +				data-lanes = <1 2>;
> +			};

Hello Luis,

Which is the output port (endpoint) : how to connect the output of 
csi2host to another node ?
I mean, the second port of this block, or, how is the data taken from 
csi2host ?

Thanks,

Eugen

> +		};
> +	};
>