xref: /freebsd/sys/contrib/device-tree/Bindings/clock/fsl,plldig.yaml (revision 8bab661a3316d8bd9b9fbd11a3b4371b91507bd2)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/fsl,plldig.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NXP QorIQ Layerscape LS1028A Display PIXEL Clock

maintainers:
  - Wen He <wen.he_1@nxp.com>

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

  clocks:
    maxItems: 1

  '#clock-cells':
    const: 0

  fsl,vco-hz:
    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'

additionalProperties: false

examples:
  # Display PIXEL Clock node:
  - |
    dpclk: clock-display@f1f0000 {
        compatible = "fsl,ls1028a-plldig";
        reg = <0xf1f0000 0xffff>;
        #clock-cells = <0>;
        clocks = <&osc_27m>;
    };

...