On the imx8qxp can ISI subsystem devices be used during the initial boot period?

[fx73]

Obviously lpuart, flexspi, usdhc0/1 are, but what about the imaging system, in particular, CSI0 has an i2c that I'd like to be able to use for a serial device on.

It appears to use CSI_MSCLICE3_CLK_ROOT which has two options from MSCLICE3_SEL; DIG_PLL0 or the 24 MHz Reference clock (possibly under CI_PI parallel interface. 

By boot time, I'm referring to the point at which the uart, uSDHC, etc. are first being initialized prior to the image being authenticated.

[AldoG]

Hello,

It may be possible to use the I2C for this purpose, but please note that he I2Cs are contained within and assigned/dedicated to the peripheral function may not be as easy to use as a generic stand-alone I2C peripheral. The whole peripheral of a dedicated I2C must also be powered up in order to use that I2C.

Best regards,
Aldo.