On Sat, Feb 19, 2022 at 02:50:01AM +0100, Marek Vasut wrote: > Add binding for Renesas 9-series PCIe clock generators. This binding > is designed to support 9FGV/9DBV/9DMV/9FGL/9DML/9QXL/9SQ series I2C > PCIe clock generators, currently the only tested and supported chip > is 9FGV0241. > > Signed-off-by: Marek Vasut <marex@xxxxxxx> > Cc: Michael Turquette <mturquette@xxxxxxxxxxxx> > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > Cc: Stephen Boyd <sboyd@xxxxxxxxxx> > Cc: devicetree@xxxxxxxxxxxxxxx > To: linux-clk@xxxxxxxxxxxxxxx > --- > V2: - Drop clock consumer from the binding example > - Make clocks, i.e. xtal, mandatory > --- > .../bindings/clock/renesas,9series.yaml | 96 +++++++++++++++++++ > 1 file changed, 96 insertions(+) > create mode 100644 Documentation/devicetree/bindings/clock/renesas,9series.yaml > > diff --git a/Documentation/devicetree/bindings/clock/renesas,9series.yaml b/Documentation/devicetree/bindings/clock/renesas,9series.yaml > new file mode 100644 > index 0000000000000..8eb56f38d99e9 > --- /dev/null > +++ b/Documentation/devicetree/bindings/clock/renesas,9series.yaml > @@ -0,0 +1,96 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/clock/renesas,9series.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Binding for Renesas 9-series I2C PCIe clock generators > + > +description: | > + The Renesas 9-series are I2C PCIe clock generators providing > + from 1 to 20 output clocks. > + > + When referencing the provided clock in the DT using phandle > + and clock specifier, the following mapping applies: > + > + - 9FGV0241: > + 0 -- DIF0 > + 1 -- DIF1 > + > +maintainers: > + - Marek Vasut <marex@xxxxxxx> > + > +properties: > + compatible: > + enum: > + - renesas,9fgv0241 > + > + reg: > + description: I2C device address > + enum: [ 0x68, 0x6a ] > + > + '#clock-cells': > + const: 1 > + > + clocks: > + items: > + - description: XTal input clock > + > + renesas,out-amplitude: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [ 600000, 700000, 800000, 900000 ] > + description: Output clock signal amplitude in uV Use the standard unit suffix, -microvolt. > + > + renesas,out-spread-spectrum: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [ 100000, 99750, 99500 ] > + description: Output clock down spread in pcm pcm? > + > +patternProperties: > + "^DIF[0-19]$": > + type: object > + description: > + Description of one of the outputs (DIF0..DIF19). blank line > + properties: > + renesas,slew-rate: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [ 2000000, 3000000 ] > + description: Output clock slew rate select in V/ns blank line > + additionalProperties: false > + > +required: > + - compatible > + - reg > + - clocks > + - '#clock-cells' > + > +additionalProperties: false > + > +examples: > + - | > + /* 25MHz reference crystal */ > + ref25: ref25m { > + compatible = "fixed-clock"; > + #clock-cells = <0>; > + clock-frequency = <25000000>; > + }; > + > + i2c@0 { > + reg = <0x0 0x100>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + rs9: clock-generator@6a { > + compatible = "renesas,9fgv0241"; > + reg = <0x6a>; > + #clock-cells = <1>; > + > + clocks = <&ref25m>; > + > + DIF0 { > + renesas,slew-rate = <3000000>; > + }; > + }; > + }; > + > +... > -- > 2.34.1 > >
