hc
2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/calxeda.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
 
title: Device Tree Clock bindings for Calxeda highbank platform
 
description: |
  This binding covers the Calxeda SoC internal peripheral and bus clocks
  as used by peripherals. The clocks live inside the "system register"
  region of the SoC, so are typically presented as children of an
  "hb-sregs" node.
 
maintainers:
  - Andre Przywara <andre.przywara@arm.com>
 
properties:
  "#clock-cells":
    const: 0
 
  compatible:
    enum:
      - calxeda,hb-pll-clock
      - calxeda,hb-a9periph-clock
      - calxeda,hb-a9bus-clock
      - calxeda,hb-emmc-clock
 
  reg:
    maxItems: 1
 
  clocks:
    maxItems: 1
 
required:
  - "#clock-cells"
  - compatible
  - clocks
  - reg
 
additionalProperties: false
 
examples:
  - |
    sregs@3fffc000 {
        compatible = "calxeda,hb-sregs";
        reg = <0x3fffc000 0x1000>;
 
        clocks {
            #address-cells = <1>;
            #size-cells = <0>;
 
            osc: oscillator {
                #clock-cells = <0>;
                compatible = "fixed-clock";
                clock-frequency = <33333000>;
            };
 
            ddrpll: ddrpll@108 {
                #clock-cells = <0>;
                compatible = "calxeda,hb-pll-clock";
                clocks = <&osc>;
                reg = <0x108>;
            };
 
            a9pll: a9pll@100 {
                #clock-cells = <0>;
                compatible = "calxeda,hb-pll-clock";
                clocks = <&osc>;
                reg = <0x100>;
            };
 
            a9periphclk: a9periphclk@104 {
                #clock-cells = <0>;
                compatible = "calxeda,hb-a9periph-clock";
                clocks = <&a9pll>;
                reg = <0x104>;
            };
        };
    };
 
...