linux-kernel - cs35l41: Enable(1) failed: -110

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Message-ID: <f7c97d53a38fb82ba8dab3b5c0c28b48@mainlining.org>
Date: Tue, 18 Mar 2025 11:11:43 +0100
From: David Wronek <david@...nlining.org>
To: Linux Sound <linux-sound@...r.kernel.org>
Cc: David Rhodes <david.rhodes@...rus.com>, Lucas Tanure
 <lucas.tanure@...rus.com>, linux-kernel@...r.kernel.org
Subject: cs35l41: Enable(1) failed: -110

Hi,

I am trying to get the Cirrus CS35L41 amps working on the Lenovo Xiaoxin 
Pad Pro 2021 on mainline Linux.
Unfortunately, while enabling the speakers, I encounter the following 
error with non-working speakers:

```
[  104.028258] cs35l41 4-0041: Enable(1) failed: -110
[  104.028597] cs35l41 4-0041: ASoC: PRE_PMU: SPK2 Main AMP event 
failed: -110
```

I have looked into the driver and it seems like it timing out while 
polling the CS35L41_IRQ1_STATUS1 register.

According to the downstream device tree, the amps are connected over 
MI2S and are using an internal boost. Switching to a shared boost does 
not work, because the interrupt is never called.

I am not sure what I might be missing here. Sadly, Lenovo has not 
released the kernel sources used in the Xiaoxin Pad Pro 2021 which is 
why I can't easily check the downstream driver for potential quirks.

Here is my setup:
  - Full dmesg: 
https://paste.mainlining.org/ungeskriptet/66855caf17f342e9b030ffe0640e84de
  - Device tree: 
https://github.com/mainlining/linux/blob/f14a883/arch/arm64/boot/dts/qcom/sm8250-lenovo-j716f.dts
  - ALSA UCM file: 
https://paste.mainlining.org/ungeskriptet/33fe4907c000413fac94e5052215b1ea

Help would be greatly appreciated.

-- 
Best regards,
David Wronek <david@...nlining.org>