Hello Adrian
> > +&spi {
> > + status = "okay";
> > +
> > + compatible = "qca,ar7100-spi";
> > +
> > + cs-gpios = <0>, <&gpio_latch 0 GPIO_ACTIVE_LOW>;
>
> Are you sure you need cs-gpios here? We've removed it everywhere else (for
> &spi node):
> https://github.com/openwrt/openwrt/commit/e5f81ea3fe79ad484d454f5959814b3a1b094dcb
On this board for the serial shift register a separate gpio line is
used as nCS, not the SoC SPI controller dedicated nCS line. So,
without cs-gpios DTS property the serial shift register doesn't work.
Denis.
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