On Tue, Apr 06, 2021 at 08:53:30PM -0400, Liam Beguin wrote: > From: Liam Beguin <lvb@xxxxxxxxxx> > > Document devicetree bindings for Texas Instruments' LMK04832. > The LMK04208 is a high performance clock conditioner with superior clock > jitter cleaning, generation, and distribution with JEDEC JESD204B > support. > > Signed-off-by: Liam Beguin <lvb@xxxxxxxxxx> > --- > .../bindings/clock/ti,lmk04832.yaml | 209 ++++++++++++++++++ > 1 file changed, 209 insertions(+) > create mode 100644 Documentation/devicetree/bindings/clock/ti,lmk04832.yaml > > diff --git a/Documentation/devicetree/bindings/clock/ti,lmk04832.yaml b/Documentation/devicetree/bindings/clock/ti,lmk04832.yaml > new file mode 100644 > index 000000000000..a9f8b9b720fc > --- /dev/null > +++ b/Documentation/devicetree/bindings/clock/ti,lmk04832.yaml > @@ -0,0 +1,209 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/clock/ti,lmk04832.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Clock bindings for the Texas Instruments LMK04832 > + > +maintainers: > + - Liam Beguin <liambeguin@xxxxxxxxx> > + > +description: | > + Devicetree binding for the LMK04832, a clock conditioner with JEDEC JESD204B > + support. The LMK04832 is pin compatible with the LMK0482x family. > + > + Link to datasheet, https://www.ti.com/lit/ds/symlink/lmk04832.pdf > + > +properties: > + compatible: > + enum: > + - ti,lmk04832 > + > + reg: > + maxItems: 1 > + > + '#address-cells': > + const: 1 > + > + '#size-cells': > + const: 0 > + > + '#clock-cells': > + const: 1 > + > + spi-max-frequency: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: > + Maximum SPI clocking speed of the device in Hz. Already has a type and description, just need: spi-max-frequency: true (Or a range of values if you know the maximum). > + > + clocks: > + items: > + - description: PLL2 reference clock. > + > + clock-names: > + items: > + - const: oscin > + > + reset-gpios: > + maxItems: 1 > + > + ti,spi-4wire-rdbk: > + description: | > + Select SPI 4wire readback pin configuration. > + Available readback pins are, > + CLKin_SEL0 0 > + CLKin_SEL1 1 > + RESET 2 > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2] > + default: 1 > + > + ti,vco-hz: > + description: Optional to set VCO frequency of the PLL in Hertz. > + > + ti,sysref-ddly: > + description: SYSREF digital delay value. > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 8 > + maximum: 8191 > + default: 8 > + > + ti,sysref-mux: > + description: | > + SYSREF Mux configuration. > + Available options are, > + Normal SYNC 0 > + Re-clocked 1 > + SYSREF Pulser 2 > + SYSREF Continuous 3 > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 3 > + > + ti,sync-mode: > + description: SYNC pin configuration. > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2] > + default: 1 > + > + ti,sysref-pulse-count: > + description: > + Number of SYSREF pulses to send when SYSREF is not in continuous mode. > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [1, 2, 4, 8] > + default: 4 > + > +patternProperties: > + "@[0-9a-d]+$": > + type: object > + description: > + Child nodes used to configure output clocks. > + > + properties: > + reg: > + description: > + clock output identifier. > + minimum: 0 > + maximum: 13 > + > + ti,clkout-fmt: > + description: > + Clock output format. > + Available options are, > + Powerdown 0x00 > + LVDS 0x01 > + HSDS 6 mA 0x02 > + HSDS 8 mA 0x03 > + LVPECL 1600 mV 0x04 > + LVPECL 2000 mV 0x05 > + LCPECL 0x06 > + CML 16 mA 0x07 > + CML 24 mA 0x08 > + CML 32 mA 0x09 > + CMOS (Off/Inverted) 0x0a > + CMOS (Normal/Off) 0x0b > + CMOS (Inverted/Inverted) 0x0c > + CMOS (Inverted/Normal) 0x0d > + CMOS (Normal/Inverted) 0x0e > + CMOS (Normal/Normal) 0x0f > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 15 > + > + ti,clkout-sysref: > + description: > + Select SYSREF clock path for output clock. > + type: boolean > + > + required: > + - reg additionalProperties: false > + > +required: > + - compatible > + - reg > + - '#clock-cells' > + - clocks > + - clock-names > + > +additionalProperties: false > + > +examples: > + - | > + clocks { > + lmk04832_oscin: oscin { > + compatible = "fixed-clock"; > + > + #clock-cells = <0>; > + clock-frequency = <122880000>; > + clock-output-names = "lmk04832-oscin"; > + }; > + }; > + > + spi0 { > + #address-cells = <1>; > + #size-cells = <0>; > + > + lmk04832: clock-controller@0 { > + #address-cells = <1>; > + #size-cells = <0>; > + > + reg = <0>; > + > + compatible = "ti,lmk04832"; > + spi-max-frequency = <781250>; > + > + reset-gpios = <&gpio_lmk 0 0 0>; > + > + #clock-cells = <1>; > + clocks = <&lmk04832_oscin>; > + clock-names = "oscin"; > + > + ti,spi-4wire-rdbk = <0>; > + ti,vco-hz = <2457600000>; > + > + assigned-clocks = > + <&lmk04832 0>, <&lmk04832 1>, > + <&lmk04832 2>, <&lmk04832 3>, > + <&lmk04832 4>, > + <&lmk04832 6>, <&lmk04832 7>, > + <&lmk04832 10>, <&lmk04832 11>; > + assigned-clock-rates = > + <122880000>, <384000>, > + <122880000>, <384000>, > + <122880000>, > + <153600000>, <384000>, > + <614400000>, <384000>; > + > + clkout0@0 { > + reg = <0>; > + ti,clkout-fmt = <0x01>; // LVDS > + }; > + > + clkout1@1 { > + reg = <1>; > + ti,clkout-fmt = <0x01>; // LVDS > + ti,clkout-sysref; > + }; > + }; > + }; > -- > 2.30.1.489.g328c10930387 >
