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Subject: Re: [PATCH] usb: xhci: Enable runtime-pm by default on AMD Yellow
 Carp platform
To:     "Shah, Nehal-bakulchandra" <nehal-bakulchandra.shah@amd.com>,
        mathias.nyman@intel.com, gregkh@linuxfoundation.org
Cc:     linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        Shyam Sundar S K <Shyam-sundar.S-k@amd.com>,
        Mario Limonciello <mario.limonciello@amd.com>,
        Basavaraj Natikar <Basavaraj.Natikar@amd.com>
References: <20210920154100.3195683-1-Nehal-Bakulchandra.shah@amd.com>
 <dce6c013-c2aa-aec6-a2c5-370e6c774e6f@amd.com>
From:   Mathias Nyman <mathias.nyman@linux.intel.com>
Message-ID: <fd86d679-092b-532c-248e-ff8bfbff3af7@linux.intel.com>
Date:   Wed, 13 Oct 2021 18:18:16 +0300
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On 11.10.2021 15.59, Shah, Nehal-bakulchandra wrote:
> 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@amd.com>
>> Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
>> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
>> Reviewed-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
>> ---
>>   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
> 

Now sent forward to Greg, thanks

-Mathias