LS1028A has a clock domain PXLCLK0 used for provide pixel clocks to Display output interface. Add a YAML schema for this. Signed-off-by: Wen He <wen.he_1@xxxxxxx> Signed-off-by: Michael Walle <michael@xxxxxxxx> --- change in v11: - renamed 'vco-frequency' to 'fsl,vco-hz' to clearly feild definiation .../devicetree/bindings/clock/fsl,plldig.yaml | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/fsl,plldig.yaml diff --git a/Documentation/devicetree/bindings/clock/fsl,plldig.yaml b/Documentation/devicetree/bindings/clock/fsl,plldig.yaml new file mode 100644 index 000000000000..23cce65b3a93 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/fsl,plldig.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bindings/clock/fsl,plldig.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP QorIQ Layerscape LS1028A Display PIXEL Clock Binding + +maintainers: + - Wen He <wen.he_1@xxxxxxx> + +description: | + NXP LS1028A has a clock domain PXLCLK0 used for the Display output + interface in the display core, as implemented in TSMC CLN28HPM PLL. + which generate and offers pixel clocks to Display. + +properties: + compatible: + const: fsl,ls1028a-plldig + + reg: + maxItems: 1 + + '#clock-cells': + const: 0 + + fsl,vco-hz: + $ref: '/schemas/types.yaml#/definitions/uint32' + description: Optional for VCO frequency of the PLL in Hertz. + The VCO frequency of this PLL cannot be changed during runtime + only at startup. Therefore, the output frequencies are very + limited and might not even closely match the requested frequency. + To work around this restriction the user may specify its own + desired VCO frequency for the PLL. + minimum: 650000000 + maximum: 1300000000 + default: 1188000000 + +required: + - compatible + - reg + - clocks + - '#clock-cells' + +examples: + # Display PIXEL Clock node: + - | + dpclk: clock-display@f1f0000 { + compatible = "fsl,ls1028a-plldig"; + reg = <0x0 0xf1f0000 0x0 0xffff>; + #clock-cells = <0>; + clocks = <&osc_27m>; + }; + +... -- 2.17.1
