On Fri, Jan 18, 2019 at 02:42:39PM +0100, Bartosz Golaszewski wrote:

> Add regulator support for max77650. We support all four variants of this
> PMIC including non-linear voltage table for max77651 SBB1 rail.

Looks good, the ramping stuff might be a candidate for core (TBH I was
sure we'd got that implemented already but we don't seem to) but that
can be done later and the more complex one with non-linear steps does
feel like it might have to stay in the driver anyway.

A couple of small nits:

> +++ b/drivers/regulator/max77650-regulator.c
> @@ -0,0 +1,537 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2018 BayLibre SAS
> + * Author: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Please make the entire header C++ style so it looks more intentional.

> +		for_each_child_of_node(dev->of_node, child) {
> +			if (!of_node_name_eq(child, rdesc->desc.name))
> +				continue;
> +
> +			init_data = of_get_regulator_init_data(dev, child,
> +							       &rdesc->desc);
> +			if (!init_data)
> +				return -ENOMEM;
> +
> +			config.of_node = child;
> +			config.init_data = init_data;
> +		}

You don't need to do this, the core will do it for you (it will actually
still do it even with the above, it'll only fall back to using
config->init_data if it's own lookup fails).