[PATCH] drivers: led: Add WS28XX compatible LED driver
Tom Rini
trini at konsulko.com
Tue Aug 12 18:20:34 CEST 2025
On Tue, Aug 12, 2025 at 04:10:12PM +0000, Andri Yngvason wrote:
> Hi Tom,
>
> þri., 12. ágú. 2025 kl. 15:59 skrifaði Tom Rini <trini at konsulko.com>:
> >
> > On Tue, Aug 12, 2025 at 03:30:18PM +0000, Andri Yngvason wrote:
> > > This is a new LED driver for the WS28XX family of LED controllers from
> > > Worldsemi and compatible devices from other manufacturers.
> > >
> > > The LED chain must be connected to an SPI output. This driver uses SPI
> > > to emulate the required digital signal.
> > >
> > > Each LED gets a fixed colour assigned to it in the device tree.
> > >
> > > Signed-off-by: Andri Yngvason <andri at yngvason.is>
> > > ---
> > > doc/device-tree-bindings/leds/leds-ws28xx.txt | 48 ++++
> >
> > We have dts/upstream/Bindings/leds/ now, so this needs to be upstream
> > and the driver compatible with that. If the driver is already
> > compatible, we can just omit adding this file. Thanks.
> >
>
> There does not exist a compatible driver in the Linux kernel. Are you
> saying that I also need to implement this for the Linux kernel for
> this to be accepted into u-boot?
>
> I have also written a driver for Linux, but I have no intention of
> upstreaming it as it is much too complex to fit into the LED
> subsystem.
You need to get the binding upstreamed, yes. That's not the same as
having a linux kernel driver upstreamed too.
--
Tom
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