On 5/14/2023 2:38 AM, Krzysztof Kozlowski wrote:
On 12/05/2023 14:01, David Lin wrote:
Convert the NAU8824 audio CODEC bindings to DT schema.
Signed-off-by: David Lin <CTLIN0@xxxxxxxxxxx>
---
Thank you for your patch. There is something to discuss/improve.
+
+ nuvoton,sar-threshold-num:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Number of buttons supported.
+ minimum: 1
+ maximum: 4
+ default: 4
+
+ nuvoton,sar-threshold:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description:
+ Impedance threshold for each button. Array that contains up to 8 buttons
+ configuration. SAR value is calculated as
+ SAR = 255 * MICBIAS / SAR_VOLTAGE * R / (2000 + R) where MICBIAS is
+ configured by 'nuvoton,micbias-voltage', SAR_VOLTAGE is configured by
+ 'nuvoton,sar-voltage', R - button impedance.
+ Refer datasheet section 10.2 for more information about threshold
+ calculation.
+ minItems: 1
+ maxItems: 4
Your description mentions 8 buttons, so maybe it should be 8 here? Or
description needs a fix?
Driver just handle maxima 4 buttons for general application, but the the
above description is truly hardware capability with 8 buttons support.
+ items:
+ minimum: 0
+ maximum: 255
+
+ nuvoton,sar-hysteresis:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Button impedance measurement hysteresis.
+ default: 0
Best regards,
Krzysztof
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