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    iMX8QM HDMI RX and MIPI-CSI Media issue

Question asked by prashanth kumar on Jun 7, 2019
Latest reply on Jun 11, 2019 by Aldo Gutierrez

Hi,

 

We are working on iMX8QM custom board (B0  CPU) with 4.14.98 Kernel BSP.

Here, both HDMI-RX and MIPI-CSI (OV5640 Camera) are working individually. We used following reference MEK DTS files,

arch/arm64/boot/dts/freescale/fsl-imx8qm-mek-ov5640.dts -------- For MIPI-CSI ov5640 camera

 

arch/arm64/boot/dts/freescale/fsl-imx8qm-mek-hdmi-in.dts -------- For HDMI RX

While cconfiguring both HDMI-RX and MIPI-CSI nodes in DTS file, the '/dev/videox' nodes are not generating in file system.

 

The DTS configuration as below,

/* Multimedia: Image Sensing Interface */
&isi_0 {
        status = "okay";
};

 

&isi_1 {
        status = "okay";
};

 

/* HDMI: HDMI-RX */
&isi_2 {
        interface = <4 0 2>;  /* <Input MIPI_VCx Output>
                                Input:  0-DC0, 1-DC1, 2-MIPI CSI0, 3-MIPI CSI1, 4-HDMI, 5-MEM
                                VCx:    0-VC0, 1-VC1, 2-VC2, 3-VC3, MIPI CSI only
                                Output: 0-DC0, 1-DC1, 2-MEM */
         status = "okay";
};

 

&isi_3 {
        /* For HDMI RX 4K chain buf */
        interface = <4 0 2>;
        status = "okay";
};

 

&isi_4 {
        status = "okay";
};

 

&isi_5 {
        status = "okay";
};

 

&isi_6 {
        status = "okay";
};

 

&isi_7 {
        status = "okay";
};

Is this configuration correct? Is  it possible to configure both HDMI-RX and MIPI-CSI (OV5640 Camera) simultaneously in DTS file?

 

Best Regards,

Prashanth Kumar K

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