On Mon, 17 Mar 2025 18:03:49 +0100, Niklas Cassel wrote:
> Before commit 7627a0edef54 ("ata: ahci: Drop low power policy board type")
> the ATI AHCI controllers specified board type 'board_ahci' rather than
> board type 'board_ahci'. This means that LPM was historically not enabled
> for the ATI AHCI controllers.
>
> By looking at commit 7a8526a5cd51 ("libata: Add ATA_HORKAGE_NO_NCQ_ON_ATI
> for Samsung 860 and 870 SSD."), it is clear that, for some unknown reason,
> that Samsung SSDs do not play nice with ATI AHCI controllers. (When using
> other AHCI controllers, NCQ can be enabled on these Samsung SSDs without
> issues.)
>
> [...]
Applied to libata/linux.git (for-6.14), thanks!
[1/1] ata: libata-core: Add ATA_QUIRK_NO_LPM_ON_ATI for certain Samsung SSDs
https://git.kernel.org/libata/linux/c/f2aac4c7
Kind regards,
Niklas
