From: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
To: Manivannan Sadhasivam <mani@kernel.org>
Cc: Vinod Koul <vkoul@kernel.org>,
Neil Armstrong <neil.armstrong@linaro.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-phy@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-usb@vger.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Subject: Re: [PATCH v7 0/5] Modify interrupt handling for eUSB2 Phy targets
Date: Tue, 13 Oct 2026 14:09:16 +0530 [thread overview]
Message-ID: <6851ca2b-775e-44d7-b437-d04fd4ea4f21@oss.qualcomm.com> (raw)
In-Reply-To: <aszg7Us_ACMMiM9N@debian>
On 10/12/2026 7:01 PM, Manivannan Sadhasivam wrote:
> On Sat, Sep 05, 2026 at 08:59:04PM +0530, Krishna Kurapati wrote:
>> eUSB2 targets handle wakeup interrupts differently depending on device
>> speed when operating in host mode.
>>
>> According to the eUSB2 specification, remote wakeup signaling in host
>> mode is detected via different data-line assertions based on the
>> connected device speed.
>>
>> When a low-speed device is connected, the host repeater drives eD+ to
>> logic '1' upon detecting a K-state on the USB lines during remote wakeup
>> (eUSB2 specification, Section 5.5.14).
>>
>> When a full-speed or high-speed device is connected, the host repeater
>> drives eD- to logic '1' upon detecting a K-state on the USB line during
>> remote wakeup (eUSB2 specification, Sections 5.5.15 and 5.5.18).
>>
>> Since the eUSB2 PHY's "DP" and "DM" interrupt lines monitor the eD+ and
>> eD- line states, configure the wakeup interrupts accordingly
>>
>> Add support for a new phy "type" attribute to be set by eusb2 phy drivers
>> and be read by consumers (in this case usb controller) and act accordingly
>>
>> Changes pushed on top of usb-testing branch. And v7 is only compile tested.
>>
>
> I believe the merge strategy is to merge all the patches through PHY tree. If
> anyone feel otherwise, please yell at me.
>
There is one existing comment from Vinod on v8-2/5:
https://lore.kernel.org/all/3a3cf540-816f-41a3-b31d-2902e7f4cf01@oss.qualcomm.com/
Once it is addressed, will send v9 on top of phy next.
Regards,
Krishna,
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
prev parent reply other threads:[~2026-10-13 8:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-05 15:29 [PATCH v7 0/5] Modify interrupt handling for eUSB2 Phy targets Krishna Kurapati
2026-09-05 15:29 ` [PATCH v7 1/5] dt-bindings: phy: Add PHY_TYPE_EUSB2 definition Krishna Kurapati
2026-09-10 15:53 ` Manivannan Sadhasivam
2026-09-05 15:29 ` [PATCH v7 2/5] include: linux: phy: Add phy attribute "type" and associated helpers Krishna Kurapati
2026-09-10 15:54 ` Manivannan Sadhasivam
2026-09-05 15:29 ` [PATCH v7 3/5] phy: snps-eusb2: Set phy type to EUSB2 Krishna Kurapati
2026-09-10 15:55 ` Manivannan Sadhasivam
2026-09-05 15:29 ` [PATCH v7 4/5] phy: qcom: m31-eusb2: " Krishna Kurapati
2026-09-10 15:56 ` Manivannan Sadhasivam
2026-09-05 15:29 ` [PATCH v7 5/5] usb: dwc3: qcom: Modify interrupt handling for eUSB2 Phy targets Krishna Kurapati
2026-09-05 15:40 ` sashiko-bot
2026-09-09 13:00 ` Konrad Dybcio
2026-10-12 13:31 ` [PATCH v7 0/5] " Manivannan Sadhasivam
2026-10-13 8:39 ` Krishna Kurapati [this message]
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