On Thu, Apr 15, 2021 at 08:28:39AM +0200, Rafał Miłecki wrote: > From: Rafał Miłecki <rafal@xxxxxxxxxx> > > CRU is a block used in e.g. Northstar devices. It can be seen in the > bcm5301x.dtsi and this binding documents its proper usage. > > Signed-off-by: Rafał Miłecki <rafal@xxxxxxxxxx> > --- > This is reworked version of the > [PATCH robh next] dt-bindings: bus: add Broadcom CRU > https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20210309142241.16259-1-zajec5@xxxxxxxxx/ > --- > .../devicetree/bindings/mfd/brcm,cru.yaml | 46 +++++++++++++++++++ > 1 file changed, 46 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mfd/brcm,cru.yaml > > diff --git a/Documentation/devicetree/bindings/mfd/brcm,cru.yaml b/Documentation/devicetree/bindings/mfd/brcm,cru.yaml > new file mode 100644 > index 000000000000..f5bce6453c33 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/brcm,cru.yaml > @@ -0,0 +1,46 @@ > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mfd/brcm,cru.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Broadcom CRU > + > +maintainers: > + - Rafał Miłecki <rafal@xxxxxxxxxx> > + > +description: | > + Broadcom CRU ("Clock and Reset Unit" or "Central Resource Unit") is a hardware > + block grouping smaller blocks. On Broadcom Northstar platform it contains e.g. > + clocks, pinctrl, USB PHY and thermal. As I said before, this needs to be a complete binding. > + > +properties: > + compatible: > + items: > + - enum: > + - brcm,ns-cru > + - const: simple-mfd As of now, it is not a 'simple-mfd' because there are no defined children. > + > + reg: > + description: CRU registers > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 1 > + > +additionalProperties: true This needs to be 'false' (and then any child nodes defined). > + > +required: > + - reg > + > +examples: > + - | > + cru-bus@1800c100 { > + compatible = "brcm,ns-cru", "simple-mfd"; > + reg = <0x1800c100 0x1d0>; > + ranges; > + #address-cells = <1>; > + #size-cells = <1>; > + }; > -- > 2.26.2 >
