[linux,dev-5.1 v1] dt-bindings: gpio: aspeed: Add SGPIO support
andrew at aj.id.au
Wed Jul 10 12:00:14 AEST 2019
On Wed, 10 Jul 2019, at 04:23, Rob Herring wrote:
> On Wed, Jul 3, 2019 at 2:01 PM Hongwei Zhang <hongweiz at ami.com> wrote:
> > Add bindings to support SGPIO on AST2400 or AST2500.
> > Signed-off-by: Hongwei Zhang <hongweiz at ami.com>
> > ---
> > .../devicetree/bindings/gpio/sgpio-aspeed.txt | 36 ++++++++++++++++++++++
> Is this SGPIO as in the blinky lights for HDDs in servers? If so, that
> has nothing to do with Linux GPIO subsystem.
No, this is just literal serialised GPIO, which can be used with e.g. nexperia
74LV595 / 74LV165 parts.
There is a separate chunk of IP in the SoC that acts as an SFF-8485 (blinky
lights) slave monitor.
More information about the Linux-aspeed