[PATCH] RFC: ARM: dts: Proposed Goramo MultiLink device tree

Linus Walleij linus.walleij at linaro.org
Wed Aug 11 02:08:12 PDT 2021

On Thu, Jul 29, 2021 at 2:16 PM Geert Uytterhoeven <geert at linux-m68k.org> wrote:

> Hi Linus,
> Can't the existing drivers/gpio/gpio-74x164.c be used?
> See also Documentation/devicetree/bindings/gpio/fairchild,74hc595.yaml

Sadly no. The way this device is used for GPIO is very
different. The former used a version of SPI and this has
to hammer GPIO lines directly, and has to use a special
strobe signal to propagate values out to pins.

Linus Walleij

More information about the openwrt-devel mailing list