On sama5d2 SoC the PIOBU pins do not lose their
voltage during Backup/Self-refresh mode. This can
be useful, for example, when the voltage must remain
positive for a peripheral during Backup/Self-refresh
mode (suspend-to ram is the Linux equivalent state).

This patch series:
- documents the driver's necessary device tree bindings
- adds a MAINTAINER for the driver,
- provides a basic GPIO controller driver for them

Andrei Stefanescu (3):
  dt-bindings: gpio: add sama5d2 PIOBU support
  MAINTAINERS: add maintainer for sama5d2 PIOBU GPIO driver
  gpio: added driver for sama5d2 PIOBU pins

 .../bindings/gpio/gpio-sama5d2-piobu.txt           |  23 ++
 MAINTAINERS                                        |   7 +
 drivers/gpio/Kconfig                               |  10 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-sama5d2-piobu.c                  | 254 +++++++++++++++++++++
 5 files changed, 295 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-sama5d2-piobu.txt
 create mode 100644 drivers/gpio/gpio-sama5d2-piobu.c

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2.7.4