关于sensor植入

[lei11]

我使用的是imx8mp开发板，我有一个自己的sensor（ar0234）需要接入开发板。

我基于ov5640驱动的基础上进行了修改。

目前ar0234 2lane，1920*1080的配置能够正常接收并存下图片

但是ar0234 4lane 1920*1080配置无法正常接收。

请问除了设备树上这两个地方需要修改成4lane，我还有什么需要注意什么地方吗

port {

ov5640_mipi_0_ep: endpoint {

remote-endpoint = <&mipi_csi0_ep>;

data-lanes = <1 2 3 4>;

clock-lanes = <0>;

};

};

port@0 {

reg = <0>;

mipi_csi0_ep: endpoint {

remote-endpoint = <&ov5640_mipi_0_ep>;

data-lanes = <4>;

csis-hs-settle = <13>;

csis-clk-settle = <2>;

csis-wclk;

};

};

[khang_letruong]

You will need to change the sensor's configuration (number of lane configuration register) so that it outputs data on all 4 lanes. You can use the oscilloscope to probe the signals of the data and clock lanes during the streaming. 

In the device-tree, you only need to change the number of lanes in the mipi-csi node to be connected to the sensor :

port@0 {

reg = <0>;

mipi_csi0_ep: endpoint {

remote-endpoint = <&ov5640_mipi_0_ep>;

data-lanes = <4>;

csis-hs-settle = <13>;

csis-clk-settle = <2>;

csis-wclk;

};

};

You can enable the debugging of mipi-csi driver in order to adjust the csis-hs-settle, csis-clk-settle if necessary: 

echo 2 > /sys/module/imx8_mipi_csi2_sam/parameters/debug