imx8mp image sensor connection error

[yhjung]

Hello,

I am Younghun Jung, a researcher at LKROBOTICCS.

Based on the IMX8MP EVK reference design, we have developed a custom board for robotics applications. Currently, we are trying to connect a CSI camera, but we are encountering issues.

As mentioned earlier, we referred to the EVK design when creating our schematic and mapped the camera pins accordingly. However, instead of the OV5640 defined on the EVK, we are using the IMX219 (Raspberry Pi Camera Module V2). We modified the DTS to recognize this device.

I2C communication seems to be working, and the IMX219 driver appears to load. However, we continue to encounter errors, and the OV5640 (which we removed from the DTS) still appears to be loaded.

Here are the relevant boot log messages:

root@imx8mpevk:~# dmesg | grep -i csi
[    0.145106] platform 32e40000.csi: Fixed dependency cycle(s) with /soc@0/bus@30800000/i2c@30a30000/ov5640_mipi@3c
[    0.158626] SCSI subsystem initialized
[    0.246405] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 243)
[    2.164387] mxc-mipi-csi2-sam 32e40000.csi: supply mipi-phy not found, using dummy regulator
[    2.173324] : mipi_csis_imx8mp_phy_reset, No remote pad found!
[    2.179251] mxc-mipi-csi2-sam 32e40000.csi: lanes: 2, hs_settle: 13, clk_settle: 2, wclk: 1, freq: 500000000

root@imx8mpevk:~# dmesg | grep ov5640
[    0.145106] platform 32e40000.csi: Fixed dependency cycle(s) with /soc@0/bus@30800000/i2c@30a30000/ov5640_mipi@3c
[    2.715804] ov5640 1-003c: supply DOVDD not found, using dummy regulator
[    2.722633] ov5640 1-003c: supply AVDD not found, using dummy regulator
[    2.729306] ov5640 1-003c: supply DVDD not found, using dummy regulator
[    2.767596] ov5640 1-003c: ov5640_write_reg: error: reg=3008, val=42
[    2.774792] ov5640 1-003c: ov5640_write_reg: error: reg=3103, val=11
[    2.781781] ov5640 1-003c: ov5640_read_reg: error: reg=3108
[    2.787410] ov5640 1-003c: failed to power on

Below is the relevant portion of the modified DTS:

{

soc@0 {

bus@30800000 {

i2c@30a30000 {

imx219_mipi@10 {

compatible = "sony,imx219";

reg = <0x10>;

pinctrl-names = "default";

pinctrl-0 = <0x37 0x38 0x39>;

clocks = <0x02 0xa5>;

clock-names = "xclk";

assigned-clocks = <0x02 0xa5>;

assigned-clock-parents = <0x02 0x02>;

assigned-clock-rates = <0x16e3600>;

vana-supply = <&{/regulator-pcie}>;

vdig-supply = <&{/regulator-pcie}>;

vddl-supply = <&{/regulator-pcie}>;

powerdown-gpios = <0x3a 0x0b 0x00>;

status = "okay";

phandle = <0xed>;

port {

imx219_out0_ep: endpoint {

remote-endpoint = <&csi0_in_ep>;

data-lanes = <0x01 0x02>;

clock-lanes = <0x00>;

link-frequencies = /bits/ 64 <456000000>;

};

};

};

};

i2c@30a40000 {

imx219_mipi@10 {

compatible = "sony,imx219";

reg = <0x10>;

pinctrl-names = "default";

pinctrl-0 = <0x37 0x38 0x39>;

clocks = <0x02 0xa5>;

clock-names = "xclk";

assigned-clocks = <0x02 0xa5>;

assigned-clock-parents = <0x02 0x02>;

assigned-clock-rates = <0x16e3600>;

csi_id = <0x00>;

vana-supply = <&{/regulator-pcie}>;

vdig-supply = <&{/regulator-pcie}>;

vddl-supply = <&{/regulator-pcie}>;

powerdown-gpios = <0x3a 0x0b 0x00>;

mclk = <0x16e3600>;

mclk_source = <0x00>;

mipi_csi;

status = "disabled";

phandle = <0xf1>;

port {

imx219_out1_ep: endpoint {

remote-endpoint = <&csi1_in_ep>;

data-lanes = <0x01 0x02>;

clock-lanes = <0x00>;

link-frequencies = /bits/ 64 <456000000>;

};

};

};

};

};

};

bus@32c00000 {

camera {

csi@32e40000 {

compatible = "fsl,imx8mp-mipi-csi\0fsl,imx8mn-mipi-csi";

reg = <0x32e40000 0x10000>;

interrupts = <0x00 0x11 0x04>;

clock-frequency = <0x1dcd6500>;

clocks = <0x02 0x10f 0x02 0x61 0x02 0x10d>;

clock-names = "mipi_clk\0disp_axi\0disp_apb";

assigned-clocks = <0x02 0xaa>;

assigned-clock-parents = <0x02 0x41>;

assigned-clock-rates = <0x1dcd6500>;

bus-width = <0x04>;

csi-gpr = <0x76>;

gpr = <0x5d>;

power-domains = <0x5d 0x01>;

status = "okay";

phandle = <0x111>;

port {

csi0_in_ep: endpoint {

remote-endpoint = <&imx219_out0_ep>;

data-lanes = <0x01 0x02>;

clock-lanes = <0x00>;

csis-hs-settle = <0x0d>;

csis-clk-settle = <0x02>;

csis-wclk;

};

};

};

csi@32e50000 {

compatible = "fsl,imx8mp-mipi-csi\0fsl,imx8mn-mipi-csi";

reg = <0x32e50000 0x10000>;

interrupts = <0x00 0x50 0x04>;

clock-frequency = <0xfdad680>;

clocks = <0x02 0x110 0x02 0x61 0x02 0x10d>;

clock-names = "mipi_clk\0disp_axi\0disp_apb";

assigned-clocks = <0x02 0xad>;

assigned-clock-parents = <0x02 0x36>;

assigned-clock-rates = <0xfdad680>;

bus-width = <0x04>;

csi-gpr = <0x78>;

gpr = <0x5d>;

power-domains = <0x5d 0x04>;

status = "disabled";

#address-cells = <0x01>;

#size-cells = <0x00>;

phandle = <0x112>;

port@0 {

reg = <0x00>;

csi1_in_ep: endpoint {

remote-endpoint = <&imx219_out1_ep>;

data-lanes = <0x01 0x02>;

clock-lanes = <0x00>;

csis-hs-settle = <0x0d>;

csis-clk-settle = <0x02>;

csis-wclk;

};

};

};

};

};

}

Despite removing OV5640 and adding IMX219 definitions, the kernel still attempts to load OV5640, and IMX219 initialization fails.

Could you please review the DTS modifications and help us identify what we may have done incorrectly, and how we can properly enable IMX219 while preventing OV5640 from loading?

Thank you in advance for your support.

Best regards,
Younghun Jung
LKROBOTICCS

[JorgeCas]

Hello,

You can refer to NXP IMX219 solution. Please take a look in the next link:

https://github.com/nxp-imx-support/meta-imx8mp-isp-imx219/tree/LF6.6.3_P24.1 

Best regards.

[yhjung]

Thank you for the quick reply.

I followed the steps using the site you provided.

However, the logs keep indicating that the sensor cannot connect to the CSI interface.

I’ve attached the logs and would appreciate your assistance.

root@imx8mpevk:~# dmesg | grep -i -E 'mx8|imx8.*media|img-md|media.*device' [ 0.000000] Machine model: NXP i.MX8MPlus EVK board [ 0.135033] imx8mp-pinctrl 30330000.pinctrl: initialized IMX pinctrl driver [ 0.278618] SoC: i.MX8MP revision 1.1 [ 1.735555] imx8mp-ldb ldb-display-controller: Failed to create device link (0x180) with 32e90000.lcd-controller [ 2.186896] : mipi_csis_imx8mp_phy_reset, No remote pad found! [ 2.656452] imx8mp-ldb ldb-display-controller: Failed to create device link (0x180) with 1-004c [ 2.726897] imx8mp-ldb ldb-display-controller: Failed to create device link (0x180) with 1-004c [ 2.777490] imx8mp-ldb ldb-display-controller: Failed to create device link (0x180) with phy-lvds [ 2.786732] imx8mq-usb-phy 381f0040.usb-phy: supply vbus not found, using dummy regulator [ 2.795436] imx8mq-usb-phy 382f0040.usb-phy: supply vbus not found, using dummy regulator [ 2.921837] imx-drm display-subsystem: bound ldb-display-controller (ops imx8mp_ldb_ops) [ 5.405274] systemd[1]: Hostname set to <imx8mpevk>. [ 10.795738] imx8_media_dev: module is from the staging directory, the quality is unknown, you have been warned. [ 10.797091] mx8-img-md: Registered sensor subdevice: imx219 1-0010 (1) [ 10.797105] mx8-img-md: subdev_notifier_complete error exit [ 10.797124] mx8-img-md: Unregistered all entities root@imx8mpevk:~# dmesg | grep -i csi [ 0.153771] platform 32e40000.csi: Fixed dependency cycle(s) with /soc@0/bus@30800000/i2c@30a30000/imx219_mipi@10 [ 0.167310] SCSI subsystem initialized [ 0.255360] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 243) [ 2.177958] mxc-mipi-csi2-sam 32e40000.csi: supply mipi-phy not found, using dummy regulator [ 2.186896] : mipi_csis_imx8mp_phy_reset, No remote pad found! [ 2.192797] mxc-mipi-csi2-sam 32e40000.csi: lanes: 2, hs_settle: 16, clk_settle: 0, wclk: 0, freq: 500000000