On Wed, Sep 19, 2018 at 6:28 AM Amelie Delaunay [off-list ref] wrote:

This series adds support for STMicroelectronics Multi-Function eXpander
(STMFX), used on some STM32 discovery and evaluation boards.

STMFX is an STM32L152 slave controller whose firmware embeds the following
features:
- I/O expander (16 GPIOs + 8 extra if the other features are not enabled),
- resistive touchscreen controller,
- IDD measurement.

I2C stuff and chip initialization is based on an MFD parent driver, which
registers a pinctrl MFD child.

---
Changes in v2:
- move to MFD parent driver for i2c stuff and chip initialization
- improve regmap configuration
- take advantage of the use of gpio-ranges

I'm very happy with this version, and Lee can merge it into the MFD tree
with my Reviewed-by tags once he is happy with the MFD core.

I hope the DT people are as happy as me so we can merge this for v4.20,
the GPIO/pinctrl parts are definately finished. any remaining snags can
be fixed in-tree.

Yours,
Linus Walleij