[PATCH v2 1/3] pinctrl: at91: add drive strength configuration

Linus Walleij linus.walleij at linaro.org
Mon Sep 1 01:27:22 PDT 2014

On Sun, Aug 24, 2014 at 5:12 AM, Marek Roszko <mark.roszko at gmail.com> wrote:

> The SAMA5 and SAM9x5 series both have drive strength options for the PIOs. This
> patch adds the ability to set one of three hardware options for drive strengths of low,
> medium or high for the each pin. The actual current output of the chip based on the setting
> is defined in the datasheets and varies per pins separate from banks and with supply voltage.
> This patch adds three new dt-bindings that allow setting the strength when configuring
> pins. By default, no change will be made to the drive strength of a pin from its reset value.
> Due to the difference between the register addresses of the SAMA5 and SAM9x5 series, a new
> sama5d3-pinctrl id was added.
> Signed-off-by: Marek Roszko <mark.roszko at gmail.com>

Waiting for feedback from AT91 maintainers...

Linus Walleij

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