Re: [PATCH v6 03/16] dt-bindings: mfd: mediatek: Add codec property for MT6357 PMIC

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On 25/06/2024 15:44, Krzysztof Kozlowski wrote:
On 25/06/2024 11:23, Alexandre Mergnat wrote:


On 21/06/2024 17:00, Krzysztof Kozlowski wrote:
On 19/06/2024 16:46, Alexandre Mergnat wrote:
Add the audio codec sub-device. This sub-device is used to set the
optional voltage values according to the hardware.
The properties are:
    - Setup of microphone bias voltage.
    - Setup of the speaker pin pull-down.

Also, add the audio power supply property which is dedicated for
the audio codec sub-device.

Signed-off-by: Alexandre Mergnat<amergnat@xxxxxxxxxxxx>
---
   .../devicetree/bindings/mfd/mediatek,mt6357.yaml   | 33 ++++++++++++++++++++++
   1 file changed, 33 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml b/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml
index 37423c2e0fdf..d95307393e75 100644
--- a/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml
+++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml
@@ -37,6 +37,32 @@ properties:
     "#interrupt-cells":
       const: 2
+ vaud28-supply:
+    description: 2.8 volt supply phandle for the audio codec
+
+  audio-codec:
+    type: object
Still not much improved. You do not have any resources there, so these
should go to the parent node.

Hi Krzysztof,

vaud28-supply seems to be a mistake that I forward port.
In the V4, AFAII, your feedback [1] suggested me to move the vaud28-supply from the "audio-codec"
sub-node to the parent node, which for me is the "pmic" (mfd), because the property is considered as
power-supply.

      pwrap {
          pmic {
              ...
              audio-codec {
                  ...

Hardware side, vaud28-supply is the output of PMIC-regulator subsystem, and AVDD28 is the input of
PMIC-audio-codec subsystem. Then:
- The property name is wrong and must be change to AVDD28, which is a consumer (power input), not a
power-supply. => description: 2.8 volt power input for microphones (AU_VIN0, AU_VIN1, AU_VIN2)
- IMHO, move this property to the next parent (pwrap) isn't consistent. It should be moved back to
Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml (Done in the V4) into audio-codec
substystem, beside mediatek,micbias0-microvolt

I don't understand why do we talk again about supply. My comment was not
under the supply.

Because your word are:
"
And now you should see how odd it looks. Supplies are part of entire
chip, not subblock, even if they supply dedicated domain within that chip.

That's why I asked to put it in the parent node.
"

My bad, I forgot to link you the old message in my previous answer [1]

[1] https://lore.kernel.org/all/6d21da37-8be7-467c-8878-d57af0b0201b@xxxxxxxxxx/#t

--
Regards,
Alexandre



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