[PATCH 1/2][SRU][J] ata: ahci: Add Intel Alder Lake-P AHCI controller to low power chipsets list
Koba Ko
koba.ko at canonical.com
Sat Nov 18 23:54:44 UTC 2023
From: Mika Westerberg <mika.westerberg at linux.intel.com>
BugLink: https://bugs.launchpad.net/bugs/2037493
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 <koba.ko at canonical.com>
Signed-off-by: Mika Westerberg <mika.westerberg at linux.intel.com>
Signed-off-by: Damien Le Moal <dlemoal at kernel.org>
(bacported from commit b8b8b4e0c052b2c06e1c4820a8001f4e0f77900f)
Signed-off-by: Koba Ko <koba.ko at canonical.com>
---
drivers/ata/ahci.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 149ee16fd022..cccc026f52dc 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -417,6 +417,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, 0x34d3), board_ahci_mobile }, /* Ice Lake LP AHCI */
{ PCI_VDEVICE(INTEL, 0x02d3), board_ahci_mobile }, /* Comet Lake PCH-U AHCI */
{ PCI_VDEVICE(INTEL, 0x02d7), board_ahci_mobile }, /* Comet Lake PCH RAID */
+ { PCI_VDEVICE(INTEL, 0x7ae2), board_ahci_mobile }, /* 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,
--
2.34.1
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