imx8qxp cannot find i2c_mipi_csi0

liaxxin · ‎04-17-2025

Hi,

I am working on kernel 5.10 and imx8qxp. An eeprom is connected on i2c_mipi_csi0, the dts is below:

&i2c_mipi_csi0 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c_mipi_csi0>;
clock-frequency = <100000>;
status = "okay";

eeprom@50 {
compatible = "atmel,24c64";
reg = <0x50>;
pagesize = <32>;
status = "okay";
};

};

pinctrl_i2c_mipi_csi0: i2c-mipi-csi0grp {
fsl,pins = <
IMX8QXP_MIPI_CSI0_I2C0_SCL_MIPI_CSI0_I2C0_SCL 0xc2000020
IMX8QXP_MIPI_CSI0_I2C0_SDA_MIPI_CSI0_I2C0_SDA 0xc2000020
>;
};

but I only got results as:

There is no device of i2c_mipi_csi0. I don't know where I was wrong. Could you help me with this? thanks a lot!

Li

liaxxin · ‎05-11-2025

Hi Rita,

thanks for your support.

I found the problem: we need to enable at least one isi interface, after adding below in device tree, i2c_mipi_csi0 works.

+&isi_0 {
+ status = "okay";
+
+ port@0 {
+ isi_input: endpoint {
+ remote-endpoint = <&ar0234_mipi_ep>;
+ };
+ };
+ cap_device {
+ status = "okay";
+ };
+};

元の投稿で解決策を見る

Rita_Wang · ‎04-24-2025

Note:

The 2k on R11 and R12 are needed, do not remove them.

Rita_Wang · ‎04-23-2025

OK, I will help check.