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Message-ID: <1935a30f-b4fd-4240-93f0-e2baf218223d@kernel.org>
Date: Tue, 4 Jun 2024 08:20:44 +0200
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Subject: Re: [PATCH v2 5/5] usb: host: xhci-plat: Add support for
 XHCI_WRITE_64_HI_LO_QUIRK
To: Jung Daehwan <dh10.jung@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
 Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>,
 Conor Dooley <conor+dt@kernel.org>, Thinh Nguyen
 <Thinh.Nguyen@synopsys.com>, Mathias Nyman <mathias.nyman@intel.com>,
 Felipe Balbi <balbi@kernel.org>,
 "open list:USB SUBSYSTEM" <linux-usb@vger.kernel.org>,
 "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
 <devicetree@vger.kernel.org>, open list <linux-kernel@vger.kernel.org>
References: <1717135657-120818-1-git-send-email-dh10.jung@samsung.com>
 <CGME20240531060731epcas2p4f14afae9f00a7e71e6bd3863f0a51441@epcas2p4.samsung.com>
 <1717135657-120818-6-git-send-email-dh10.jung@samsung.com>
 <9c9d74c0-72a2-418a-b3c6-a0f9716c943d@kernel.org>
 <20240603034435.GC23593@ubuntu>
 <eb1d9734-fa19-4051-9e78-a6e72ac12662@kernel.org>
 <20240603085111.GF23593@ubuntu>
From: Krzysztof Kozlowski <krzk@kernel.org>
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In-Reply-To: <20240603085111.GF23593@ubuntu>
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On 03/06/2024 10:51, Jung Daehwan wrote:
>>>>>  
>>>>> +		if (device_property_read_bool(tmpdev, "write-64-hi-lo-quirk"))
>>>>> +			xhci->quirks |= XHCI_WRITE_64_HI_LO;
>>>>
>>>> Where is any user of this property (DTS)? Just to clarify: your
>>>> downstream does not matter really.
>>>>
>>>
>>> This is set by dwc3 parent node by software node.
>>>
>>> [PATCH v2 1/5] dt-bindings: usb: snps,dwc3: Add 'snps,xhci-write-64-hi-lo-quirk' quirk
>>> https://lore.kernel.org/r/1717135657-120818-2-git-send-email-dh10.jung@samsung.com/
>>
>> This is not a patch to DTS.
>>
>>
> 
> This is set by software node from dwc3. That's why I think this patch doesn't
> need DTS patch. I would add DTS patch in dwc3 not xhci if it's needed.
> 

What?

I asked you question which upstream SoC (link to DTS) uses it, and you
say that "no need for DTS patch"? That's not an answer.

Best regards,
Krzysztof