I'd like to change I2C voltage on DVP port. I have checked device tree for some hints but all I can find is this:
DOVDD-supply = <&vgen4_reg>; /* 1.8v */
AVDD-supply = <&vgen3_reg>; /* 2.8v, on rev C board is VGEN3,
on rev B board is VGEN5 */
DVDD-supply = <&vgen2_reg>; /* 1.5v*/
pwn-gpios = <&gpio1 16 1>; /* active low: SD1_DAT0 */
rst-gpios = <&gpio1 17 0>; /* active high: SD1_DAT1 */
There is no information about any of the *-supply variables.I can understand AVDD stands for analog VDD and DVDD stands for digital VDD but still it's not really clear.
Are they(DOVDD, AVDD, DVDD supply) for CSI-DVP configuration?
Can they also control I2C voltages?
Are I2C settings fixed, and not changeable?