iMX8M Plus mxc-isi-m2m video0

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iMX8M Plus mxc-isi-m2m video0

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khang_letruong
Senior Contributor III

Hi Experts,

Usually I see that mxc-isi-m2m device is mounted under /dev/video0 but I don't know what purpose it is for. I then disable it in my system so that the physical cameras appear from index 0. Could anyone clarify the use of that device and what could be the consequence in case it is disabled, please?

Thanks in advance,
Khang

 

 

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joanxie
NXP TechSupport
NXP TechSupport

refer to the dts file:

&isi_0 {
	status = "okay";

	cap_device {
		status = "okay";
	};

	m2m_device {
		status = "okay";
	};
};

&isi_1 {
	status = "disabled";

	cap_device {
		status = "okay";
	};

you can find imx8mp can support isi-m2m or isi-cap, if you disable the isi-m2m, can connect the camera to the isi-cap

 

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khang_letruong
Senior Contributor III

Thanks @joanxie for the pointing out. But I would like to know the difference btw the two devices : m2m vs cap. Which one is better in term of perf. if any ?

Best regard,

Khang

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joanxie
NXP TechSupport
NXP TechSupport
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