[    0.497415] gpio-1 (sda): enforced open drain please flag it properly in DT/ACPI DSDT/board file
[    0.506258] gpio-2 (scl): enforced open drain please flag it properly in DT/ACPI DSDT/board file
[    0.516101] pca953x 0-0020: supply vcc not found, using dummy regulator
[    0.522958] pca953x 0-0020: using no AI
[    0.530884] pca953x 0-0020: failed writing register
[    0.536019] i2c-gpio i2c: using lines 1 (SDA) and 2 (SCL)