On Mon, Jun 13, 2022 at 12:56:49PM -0700, Brad Larson wrote: > From: Brad Larson <blarson@xxxxxxx> > > Add support for the AMD Pensando Elba SoC System Resource chip > using the SPI interface. The Elba SR is a Multi-function Device > supporting device register access using CS0, smbus interface for > FRU and board peripherals using CS1, dual Lattice I2C masters for > transceiver management using CS2, and CS3 for flash access. > > Signed-off-by: Brad Larson <blarson@xxxxxxx> > --- > .../bindings/mfd/amd,pensando-elbasr.yaml | 93 +++++++++++++++++++ > 1 file changed, 93 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml > > diff --git a/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml b/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml > new file mode 100644 > index 000000000000..13356800b1cf > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml > @@ -0,0 +1,93 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mfd/amd,pensando-elbasr.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: AMD Pensando Elba SoC Resource Controller bindings > + > +description: | > + AMD Pensando Elba SoC Resource Controller bindings attached to a SPI bus. > + > +maintainers: > + - Brad Larson <blarson@xxxxxxx> > + > +properties: > + compatible: > + items: > + - enum: > + - amd,pensando-elbasr > + - const: simple-mfd > + > + spi-max-frequency: > + description: Maximum SPI frequency of the device in Hz. > + > + reg: > + maxItems: 1 > + > + '#address-cells': > + const: 1 > + > + '#size-cells': > + const: 0 > + > + interrupts: > + maxItems: 1 > + > +required: > + - compatible > + - reg > + - spi-max-frequency > + > +patternProperties: > + '^reset-controller@[a-f0-9]+$': > + $ref: ../reset/amd,pensando-elbasr-reset.yaml /schemas/reset/... > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/reset/amd,pensando-elba-reset.h> > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + > + spi0 { > + #address-cells = <1>; > + #size-cells = <0>; > + num-cs = <4>; > + > + spi@0 { > + compatible = "amd,pensando-elbasr", "simple-mfd"; > + reg = <0>; > + #address-cells = <1>; > + #size-cells = <0>; > + spi-max-frequency = <12000000>; > + > + rstc: reset-controller@0 { Only one child does not make a MFD... > + compatible = "amd,pensando-elbasr-reset"; > + reg = <0>; > + #reset-cells = <1>; > + }; > + }; > + > + spi@1 { > + compatible = "amd,pensando-elbasr", "simple-mfd"; > + reg = <1>; > + spi-max-frequency = <12000000>; 'simple-mfd' implies there are child nodes, but you have none. Is this complete? > + }; > + > + spi@2 { > + compatible = "amd,pensando-elbasr", "simple-mfd"; > + reg = <2>; > + spi-max-frequency = <12000000>; > + interrupt-parent = <&porta>; > + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; This one has interrupt but the others don't? > + }; > + > + spi@3 { > + compatible = "amd,pensando-elbasr", "simple-mfd"; > + reg = <3>; > + spi-max-frequency = <12000000>; > + }; > + }; > + > +... > -- > 2.17.1 > >
