From: Linus Walleij <linus.wall...@linaro.org> Date: Wed, 7 Sep 2016 15:53:42 +0200
> On some systems (such as the Qualcomm APQ8060 Dragonboard) the > RESET signal of the SMSC911x is not pulled up by a resistor (or > the internal pull-up that will pull it up if the pin is not > even connected) but instead connected to a GPIO line, so that > the operating system must explicitly deassert RESET before use. > > Support this in the SMSC911x driver so this ethernet connector > can be used on such targets. > > Notice that we request the line to go logical low (deassert) > whilst the line on the actual component is active low. This > is managed in the respective hardware description when > specifying the GPIO line with e.g. device tree or ACPI. With > device tree it looks like this in one case: > > reset-gpios = <&tlmm 30 GPIO_ACTIVE_LOW>; > > Which means that logically requesting the RESET line to be > deasserted will result in the line being driven high, taking > the device out of reset. > > Cc: Jeremy Linton <jeremy.lin...@arm.com> > Signed-off-by: Linus Walleij <linus.wall...@linaro.org> Applied.
