Only super minor stuff. Thanks to all the contributors and reviewers! > +#define HZ_PER_KHZ 1000
KHZ_PER_HZ?
> + ret = devm_i2c_add_adapter(dev, adapter);
> + if (ret) {
> + dev_err(dev, "failed to add i2c adapter, ret = %d\n", ret);
No need to print that. The core prints messages on failures.
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