[PATCH v3 0/3] Fix CS35L56 amplifier on Intel LPSS SPI with broken ACPI cs-gpios

Richard Fitzgerald rf at opensource.cirrus.com
Thu Sep 3 02:21:03 PDT 2026


On 01/09/2026 8:26 pm, Khalil wrote:
> v3 of the patch series fixing dual CS35L56 amplifiers on HP laptops
> with Intel Lunar Lake and broken ACPI cs-gpios.

HP told us they have a BIOS with the cs-gpios fixed, and they can make
that available early if you post a support request for it.

Can you test that new BIOS? It would avoid the messy SPI workarounds.



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