Cannot generate /dev/media0 on iMX8M Nano board

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Cannot generate /dev/media0 on iMX8M Nano board

1,510 Views
2802911181
Contributor II

Hello.  

  We 're trying to port camera Pico DCAM20 driver to BSP5.4.3 of i.MX8M Nano by referring to ov5640 driver. The /dev/video0 has been generated but no /dev/media0  and  "subdev_notifier_complete error exit" is printed as the log file attached. The driver file is attached too.

 The info about the camera in device tree as below:

------------------------------------------------------- in imx8mn-ddr4-evk.dts  ------------------------------------------------

&i2c3 {
clock-frequency = <100000>;
pinctrl-names = "default", "gpio";
pinctrl-0 = <&pinctrl_i2c3>;
pinctrl-1 = <&pinctrl_i2c3_gpio>;
scl-gpios = <&gpio5 18 GPIO_ACTIVE_HIGH>;
sda-gpios = <&gpio5 19 GPIO_ACTIVE_HIGH>;
status = "okay";

dcam20_mipi_0: dcam20_mipi@64 {
compatible = "adi,addi903x";
reg = <0x64>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_csi_pwn>, <&pinctrl_csi_rst>;
clocks = <&clk IMX8MN_CLK_CLKO1>;
clock-names = "xclk";
assigned-clocks = <&clk IMX8MN_CLK_CLKO1>;
assigned-clock-parents = <&clk IMX8MN_CLK_24M>;
assigned-clock-rates = <135000000>; 
clock-frequency = <135000000>;
csi_id = <0>;
powerdown-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
mclk = <135000000>;
mclk_source = <0>;
mipi_csi;
status = "okay";
port {
dcam20_ep: endpoint {
remote-endpoint = <&mipi1_sensor_ep>;
data-lanes = <1 2>;
clocks-lanes = <0>;
};
};
};

};

&mipi_csi_1 {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
port@0 {
reg = <0>;
mipi1_sensor_ep: endpoint {
remote-endpoint = <&dcam20_ep>;
data-lanes = <2>; 
csis-hs-settle = <13>; 
csis-clk-settle = <2>; 
csis-wclk; //modified by ryl
};
};
};

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Could someone give me some advice?

Thanks.

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3 Replies

1,427 Views
igorpadykov
NXP Employee
NXP Employee

Hi Michael

one can try unit test for debugging and testing new camera driver

mx8_v4l2_cap_drm.c\mxc_v4l2_test\test - imx-test - i.MX Driver Test Application Software 

Best regards
igor
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1,427 Views
2802911181
Contributor II

Hi Igorpadykov

    Thanks for your advice. It's OK now as I added link operation in the probe function of the driver file.

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1,227 Views
gghy
Contributor I

Hi, what do you mean with " added link operation in the probe function of the driver file" ?
I'm having a similar error but can't find a solution

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