From b8b8b4e0c052b2c06e1c4820a8001f4e0f77900f Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Mon, 25 Sep 2023 11:05:38 +0300 Subject: [PATCH] ata: ahci: Add Intel Alder Lake-P AHCI controller to low power chipsets list Intel Alder Lake-P AHCI controller needs to be added to the mobile chipsets list in order to have link power management enabled. Without this the CPU cannot enter lower power C-states making idle power consumption high. Cc: Koba Ko Signed-off-by: Mika Westerberg Signed-off-by: Damien Le Moal --- drivers/ata/ahci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 99b3d3e60774..3a5f3255f51b 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -423,6 +423,7 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(INTEL, 0x02d7), board_ahci_low_power }, /* Comet Lake PCH RAID */ /* Elkhart Lake IDs 0x4b60 & 0x4b62 https://sata-io.org/product/8803 not tested yet */ { PCI_VDEVICE(INTEL, 0x4b63), board_ahci_low_power }, /* Elkhart Lake AHCI */ + { PCI_VDEVICE(INTEL, 0x7ae2), board_ahci_low_power }, /* Alder Lake-P AHCI */ /* JMicron 360/1/3/5/6, match class to avoid IDE function */ { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,