On Sat, Sep 28, 2024 at 12:29:47AM +0200, Linus Walleij wrote: > The BCM63138 family of serial LED controllers has a register > where we can set up bits for the shift registers. These are > the number of rounds the bits need to be shifted before all > bits have been shifted through the external shift registers. > > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > --- > ChangeLog v1->v2: > - Drop the $ref to u32 since the new property is suffixed > with "-bits" and thus get standard treatment. > --- > Documentation/devicetree/bindings/leds/leds-bcm63138.yaml | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/Documentation/devicetree/bindings/leds/leds-bcm63138.yaml b/Documentation/devicetree/bindings/leds/leds-bcm63138.yaml > index bb20394fca5c..b3d530c46061 100644 > --- a/Documentation/devicetree/bindings/leds/leds-bcm63138.yaml > +++ b/Documentation/devicetree/bindings/leds/leds-bcm63138.yaml > @@ -41,6 +41,17 @@ properties: > "#size-cells": > const: 0 > > + brcm,serial-shift-bits: bits is an uint32-array, so you need to limit number of items, e.g. items: - minimum: 1 maximum: 32 default: [0]? or something else? > + minimum: 1 > + maximum: 32 > + description: > + This describes the number of 8-bit serial shifters > + connected to the LED controller block. The hardware > + is typically using 8-bit shift registers with 8 LEDs > + per shift register, so 4 shifters results in 32 LEDs > + or 2 shifters give 16 LEDs etc, but the hardware > + supports any odd number of registers. Best regards, Krzysztof
