Hi Russell,
On Tue, Aug 20, 2024 at 7:22 PM Russell King (Oracle)
<linux@xxxxxxxxxxxxxxx> wrote:
> This is where:
>
> ret = regmap_bulk_write(chip->regmap, regaddr, value, NBANK(chip));
> if (ret < 0) {
> dev_err(&chip->client->dev, "failed writing register\n");
Yes, correct. This is where -EAGAIN is coming from:
[ 1.745657] pca953x 2-0020: supply vcc not found, using dummy regulator
[ 1.752502] pca953x 2-0020: using no AI
[ 1.756579] pca953x 2-0020: **** failed writing register: -11
[ 1.762510] pca953x: probe of 2-0020 failed with error -11
[ 1.768298] i2c i2c-2: IMX I2C adapter registered
The pca953x driver tries to write to the i2c-2 bus before i2c-2 is registered.
This is the point I don't understand: how can the pca953x driver get
probed before its I2C bus parent?
Thanks
