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SubjectRe: [RFC PATCH 0/3] UP Squared board drivers
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Sorry, I messed up this submission:
linux-kernel is only Cc'd on the cover letter.

I'll repost right away - please ignore this thread.

On 21/04/2018 09:30, Javier Arteaga wrote:
> Hi all,
>
> This series adds platform support for AAEON's UP Squared, a x86 SBC
> based on Apollo Lake [1]. Specifically, it enables control for the board
> pin headers and for the LEDs, as both of these features are only
> available behind a FPGA-based platform controller.
>
> This is structured around a MFD driver that provides a regmap interface
> to that platform controller to each MFD cell.
>
> The series is carved out from an out-of-tree support patchset, initially
> written by Dan O'Donovan for the original UP Board [2] and then extended
> through the past year to support new entries in the lineup (UP Board, UP
> Squared and UP Core) [3].
>
> Here we only submit support for UP Squared to simplify review. Still,
> the driver is designed so that it can easily gain support for the other
> boards.
>
> Questions:
>
> * Is MFD the right fit for the platform controller?
> The intention here is to encapsulate the custom GPIO-bitbanged control
> protocol by sharing the regmap between the drivers.
>
> * Is our use of two chained pinctrls (in patch 3/3) valid?
>
> Thank you!
>
> [1]: http://www.up-board.org/upsquared/specifications-up2/
> [2]: https://lkml.kernel.org/r/1467648434-29080-1-git-send-email-dan@emutex.com
> [3]: https://github.com/emutex/ubilinux-kernel/commits/upboard-4.9
>
> Javier Arteaga (3):
> mfd: upboard: Add UP2 platform controller driver
> leds: upboard: Add LED support
> pinctrl: upboard: Add pinctrl and gpio driver
>
> drivers/leds/Kconfig | 10 +
> drivers/leds/Makefile | 1 +
> drivers/leds/leds-upboard.c | 87 +++++
> drivers/mfd/Kconfig | 17 +
> drivers/mfd/Makefile | 1 +
> drivers/mfd/upboard.c | 273 ++++++++++++++++
> drivers/pinctrl/Kconfig | 13 +
> drivers/pinctrl/Makefile | 1 +
> drivers/pinctrl/pinctrl-upboard.c | 523 ++++++++++++++++++++++++++++++
> include/linux/mfd/upboard.h | 70 ++++
> 10 files changed, 996 insertions(+)
> create mode 100644 drivers/leds/leds-upboard.c
> create mode 100644 drivers/mfd/upboard.c
> create mode 100644 drivers/pinctrl/pinctrl-upboard.c
> create mode 100644 include/linux/mfd/upboard.h
>

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