0001 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/clock/cirrus,lochnagar.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Cirrus Logic Lochnagar Audio Development Board
0008
0009 maintainers:
0010 - patches@opensource.cirrus.com
0011
0012 description: |
0013 Lochnagar is an evaluation and development board for Cirrus Logic
0014 Smart CODEC and Amp devices. It allows the connection of most Cirrus
0015 Logic devices on mini-cards, as well as allowing connection of various
0016 application processor systems to provide a full evaluation platform.
0017 Audio system topology, clocking and power can all be controlled through
0018 the Lochnagar, allowing the device under test to be used in a variety of
0019 possible use cases.
0020
0021 This binding document describes the binding for the clock portion of the
0022 driver.
0023
0024 Also see these documents for generic binding information:
0025 [1] Clock : ../clock/clock-bindings.txt
0026
0027 And these for relevant defines:
0028 [2] include/dt-bindings/clock/lochnagar.h
0029
0030 This binding must be part of the Lochnagar MFD binding:
0031 [3] ../mfd/cirrus,lochnagar.yaml
0032
0033 properties:
0034 compatible:
0035 enum:
0036 - cirrus,lochnagar1-clk
0037 - cirrus,lochnagar2-clk
0038
0039 '#clock-cells':
0040 description:
0041 The first cell indicates the clock number, see [2] for available
0042 clocks and [1].
0043 const: 1
0044
0045 clock-names:
0046 items:
0047 enum:
0048 - ln-cdc-clkout # Output clock from CODEC card.
0049 - ln-dsp-clkout # Output clock from DSP card.
0050 - ln-gf-mclk1 # Optional input clock from host system.
0051 - ln-gf-mclk2 # Optional input clock from host system.
0052 - ln-gf-mclk3 # Optional input clock from host system.
0053 - ln-gf-mclk4 # Optional input clock from host system.
0054 - ln-psia1-mclk # Optional input clock from external connector.
0055 - ln-psia2-mclk # Optional input clock from external connector.
0056 - ln-spdif-mclk # Optional input clock from SPDIF.
0057 - ln-spdif-clkout # Optional input clock from SPDIF.
0058 - ln-adat-mclk # Optional input clock from ADAT.
0059 - ln-pmic-32k # On board fixed clock.
0060 - ln-clk-12m # On board fixed clock.
0061 - ln-clk-11m # On board fixed clock.
0062 - ln-clk-24m # On board fixed clock.
0063 - ln-clk-22m # On board fixed clock.
0064 - ln-clk-8m # On board fixed clock.
0065 - ln-usb-clk-24m # On board fixed clock.
0066 - ln-usb-clk-12m # On board fixed clock.
0067 minItems: 1
0068 maxItems: 19
0069
0070 clocks: true
0071 assigned-clocks: true
0072 assigned-clock-parents: true
0073
0074 additionalProperties: false
0075
0076 required:
0077 - compatible
0078 - '#clock-cells'
