Re: [PATCH] usb: xhci: Enable runtime-pm by default on AMD Yellow Carp platform

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Hi

On 9/20/2021 9:11 PM, Nehal Bakulchandra Shah wrote:
AMD's Yellow Carp platform supports runtime power management for
XHCI Controllers, so enable the same by default for all XHCI Controllers.

Signed-off-by: Nehal Bakulchandra Shah <Nehal-Bakulchandra.shah@xxxxxxx>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx>
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Reviewed-by: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx>
---
  drivers/usb/host/xhci-pci.c | 15 +++++++++++++++
  1 file changed, 15 insertions(+)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 2c9f25ca8edd..0e571d6af2ab 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -69,6 +69,12 @@
  #define PCI_DEVICE_ID_ASMEDIA_1142_XHCI			0x1242
  #define PCI_DEVICE_ID_ASMEDIA_2142_XHCI			0x2142
  #define PCI_DEVICE_ID_ASMEDIA_3242_XHCI			0x3242
+#define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_1	0x161a
+#define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_2	0x161b
+#define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_3	0x161d
+#define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_4	0x161e
+#define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_5	0x15d6
+#define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_6	0x15d7
static const char hcd_name[] = "xhci_hcd"; @@ -313,6 +319,15 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
  	     pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4))
  		xhci->quirks |= XHCI_NO_SOFT_RETRY;
+ if (pdev->vendor == PCI_VENDOR_ID_AMD &&
+	    (pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_1 ||
+	    pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_2 ||
+	    pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_3 ||
+	    pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_4 ||
+	    pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_5 ||
+	    pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_6))
+		xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
+
  	if (xhci->quirks & XHCI_RESET_ON_RESUME)
  		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
  				"QUIRK: Resetting on resume");


ping

Thanks
Nehal



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