starfive-tech/u-boot.git/drivers/gpio/nmk_gpio.c, branch rtthread_AMPStarFive Tech U-Boot for VisionFive (JH7110) boards (mirror)https://git.radix-linux.su/starfive-tech/u-boot.git/atom?h=rtthread_AMP2021-07-14T20:47:56+00:00gpio: Add driver for Nomadik GPIO2021-07-14T20:47:56+00:00Stephan Gerholdstephan@gerhold.net2021-07-02T15:06:18+00:00urn:sha1:1e0b4c07bf3b437471563f9921812bc38f2563d5
Nomadik GPIO is a fairly simple GPIO module used in the ST-Ericsson
Ux500 SoCs (and some older Nomadik SoCs). It uses registers where
each GPIO is represented as a single bit, plus "set" and "clear"
registers that allow updating the state without having to read the
existing state.
The driver implements support for it for use together with DM_GPIO
and the existing ste-dbx5x0.dtsi device tree.
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>