Re: [PATCH 1/2] dt-bindings: clk: rs9: Add Renesas 9-series I2C PCIe clock generator

Marek Vasut
2022-02-18T01:09:32Z

On 2/18/22 00:39, Stephen Boyd wrote:
> Quoting Marek Vasut (2022-02-13 09:33:09)
>> diff --git a/Documentation/devicetree/bindings/clock/renesas,9series.yaml b/Documentation/devicetree/bindings/clock/renesas,9series.yaml
>> new file mode 100644
>> index 0000000000000..774053748d9f0
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/renesas,9series.yaml
>> @@ -0,0 +1,102 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/clock/renesas,9series.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Binding for Renesas 9-series I2C PCIe clock generators
>> +
>> +description: |
>> + The Renesas 9-series are I2C PCIe clock generators providing
>> + from 1 to 20 output clocks.
>> +
>> + When referencing the provided clock in the DT using phandle
>> + and clock specifier, the following mapping applies:
>> +
>> + - 9FGV0241:
>> + 0 -- DIF0
>> + 1 -- DIF1
>> +
>> +maintainers:
>> + - Marek Vasut <marex@denx.de>
>> +
>> +properties:
>> + compatible:
>> + enum:
>> + - renesas,9fgv0241
>> +
>> + reg:
>> + description: I2C device address
>> + enum: [ 0x68, 0x6a ]
>> +
>> + '#clock-cells':
>> + const: 1
>> +
>> + clocks:
>> + items:
>> + - description: XTal input clock
>> +
>> + renesas,out-amplitude:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum: [ 600000, 700000, 800000, 900000 ]
>> + description: Output clock signal amplitude in uV
>> +
>> + renesas,out-spread-spectrum:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum: [ 100000, 99750, 99500 ]
>> + description: Output clock down spread in pcm
>> +
>> +patternProperties:
>> + "^DIF[0-19]$":
>> + type: object
>> + description:
>> + Description of one of the outputs (DIF0..DIF19).
>> + properties:
>> + renesas,slew-rate:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum: [ 2000000, 3000000 ]
>> + description: Output clock slew rate select in V/ns
>> + additionalProperties: false
>> +
>> +required:
>> + - compatible
>> + - reg
>> + - '#clock-cells'
>
> Can it operate without an input xtal?

Not to my knowledge. …