| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.9 239/391] usb: dwc3: pci: Allow Elkhart Lake to utilize DSM method for PM functionality | Date | Tue, 3 Nov 2020 21:34:50 +0100 |
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From: Raymond Tan <raymond.tan@intel.com>
commit a609ce2a13360d639b384b6ca783b38c1247f2db upstream.
Similar to some other IA platforms, Elkhart Lake too depends on the PMU register write to request transition of Dx power state.
Thus, we add the PCI_DEVICE_ID_INTEL_EHLLP to the list of devices that shall execute the ACPI _DSM method during D0/D3 sequence.
[heikki.krogerus@linux.intel.com: included Fixes tag]
Fixes: dbb0569de852 ("usb: dwc3: pci: Add Support for Intel Elkhart Lake Devices") Cc: stable@vger.kernel.org Signed-off-by: Raymond Tan <raymond.tan@intel.com> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/usb/dwc3/dwc3-pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -147,7 +147,8 @@ static int dwc3_pci_quirks(struct dwc3_p if (pdev->vendor == PCI_VENDOR_ID_INTEL) { if (pdev->device == PCI_DEVICE_ID_INTEL_BXT || - pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) { + pdev->device == PCI_DEVICE_ID_INTEL_BXT_M || + pdev->device == PCI_DEVICE_ID_INTEL_EHLLP) { guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid); dwc->has_dsm_for_pm = true; }
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