From 61aa894e7a2fda4ee026523b01d07e83ce2abb72 Mon Sep 17 00:00:00 2001 From: Georg Gottleuber Date: Tue, 27 Aug 2024 12:41:33 +0200 Subject: nvme-pci: Add sleep quirk for Samsung 990 Evo On some TUXEDO platforms, a Samsung 990 Evo NVMe leads to a high power consumption in s2idle sleep (2-3 watts). This patch applies 'Force No Simple Suspend' quirk to achieve a sleep with a lower power consumption, typically around 0.5 watts. Signed-off-by: Georg Gottleuber Signed-off-by: Werner Sembach Cc: Signed-off-by: Keith Busch --- drivers/nvme/host/pci.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/nvme') diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 9026a730d5ed..c0533f3f64cb 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2973,6 +2973,17 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev) dmi_match(DMI_BOARD_NAME, "NS5x_7xPU") || dmi_match(DMI_BOARD_NAME, "PH4PRX1_PH6PRX1")) return NVME_QUIRK_FORCE_NO_SIMPLE_SUSPEND; + } else if (pdev->vendor == 0x144d && pdev->device == 0xa80d) { + /* + * Exclude Samsung 990 Evo from NVME_QUIRK_SIMPLE_SUSPEND + * because of high power consumption (> 2 Watt) in s2idle + * sleep. Only some boards with Intel CPU are affected. + */ + if (dmi_match(DMI_BOARD_NAME, "GMxPXxx") || + dmi_match(DMI_BOARD_NAME, "PH4PG31") || + dmi_match(DMI_BOARD_NAME, "PH4PRX1_PH6PRX1") || + dmi_match(DMI_BOARD_NAME, "PH6PG01_PH6PG71")) + return NVME_QUIRK_FORCE_NO_SIMPLE_SUSPEND; } /* -- cgit v1.2.3-70-g09d2