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 | 198 ++++++++++++++++++ 1 file changed, 198 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..c0d9ab650e80 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/ti,lmk04832.yaml @@ -0,0 +1,198 @@ +# 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 + + '#clock-cells': + const: 1 + + 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 + +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
