On Wed, Apr 11, 2018 at 11:15:49AM +0200, Geert Uytterhoeven wrote:
> Vfio-platform requires reset support, provided either by ACPI, or, on DT
> platforms, by a device-specific reset driver matching against the
> device's compatible value.
> On many SoCs, devices are connected to an SoC-internal reset controller.
> If the reset hierarchy is described in DT using "resets" properties,
> such devices can be reset in a generic way through the reset controller
> subsystem. Hence add support for this, avoiding the need to write
> device-specific reset drivers for each single device on affected SoCs.
> Devices that do require a more complex reset procedure can still provide
> a device-specific reset driver, as that takes precedence.
> Note that this functionality depends on CONFIG_RESET_CONTROLLER=y, and
> becomes a no-op (as in: "No reset function found for device") if reset
> controller support is disabled.
> Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
> Reviewed-by: Philipp Zabel <p.za...@pengutronix.de>
Reviewed-by: Simon Horman <horms+rene...@verge.net.au>