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From: Adrien Thierry <athierry@redhat.com>
To: Shazad Hussain <quic_shazhuss@quicinc.com>
Cc: agross@kernel.org, andersson@kernel.org, robh+dt@kernel.org,
	krzysztof.kozlowski+dt@linaro.org,
	Konrad Dybcio <konrad.dybcio@linaro.org>,
	Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Wesley Cheng <quic_wcheng@quicinc.com>,
	linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-usb@vger.kernel.org
Subject: Re: [PATCH v1 0/6] arm64: qcom: sa8775p: add support for USB
Date: Mon, 24 Apr 2023 18:35:04 -0400	[thread overview]
Message-ID: <ZEcEGJiikEC2wIVE@fedora> (raw)
In-Reply-To: <20230421133922.8520-1-quic_shazhuss@quicinc.com>

Hi Shazad,

On Fri, Apr 21, 2023 at 07:09:15PM +0530, Shazad Hussain wrote:
> Update relavent DT bindings for USB, add new config to the phy driver,
> add USB and PHY nodes to the .dtsi and enable them in the board .dts
> for the sa8775p-ride platform.
> 
> Shazad Hussain (6):
>   dt-bindings: usb: qcom,dwc3: Add bindings for SA8775P
>   dt-bindings: phy: qcom,usb-snps-femto-v2: Add bindings for SA8775P
>   dt-bindings: phy: qcom,sc8280xp-qmp-usb3-uni: Add SA8775P USB PHY
>     binding
>   phy: qcom-qmp: Add SA8775P USB3 UNI phy
>   arm64: dts: qcom: sa8775p: add USB nodes
>   arm64: dts: qcom: sa8775p-ride: enable USB nodes
> 
>  .../phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml   |   1 +
>  .../bindings/phy/qcom,usb-snps-femto-v2.yaml  |   1 +
>  .../devicetree/bindings/usb/qcom,dwc3.yaml    |   5 +
>  arch/arm64/boot/dts/qcom/sa8775p-ride.dts     |  92 +++++++
>  arch/arm64/boot/dts/qcom/sa8775p.dtsi         | 239 +++++++++++++++++-
>  drivers/phy/qualcomm/phy-qcom-qmp-usb.c       |  45 ++++
>  6 files changed, 381 insertions(+), 2 deletions(-)
> 
> -- 
> 2.17.1
> 

Thanks for posting this. I tested the series on the sa8775p, and it seems
initialization for the controller at a400000 sometimes fails with a
timeout (-110) error:

    dwc3 a400000.usb: Adding to iommu group 2
    xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
    xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
    xhci-hcd xhci-hcd.0.auto: can't setup: -110
    xhci-hcd xhci-hcd.0.auto: USB bus 1 deregistered
    xhci-hcd: probe of xhci-hcd.0.auto failed with error -110
    dwc3 a600000.usb: Adding to iommu group 3
    dwc3 a800000.usb: Adding to iommu group 4
    xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
    xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 1
    xhci-hcd xhci-hcd.1.auto: hcc params 0x0110ffc5 hci version 0x110 quirks 0x0000000000010010
    xhci-hcd xhci-hcd.1.auto: irq 162, io mem 0x0a800000
    xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
    xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 2
    xhci-hcd xhci-hcd.1.auto: Host supports USB 3.1 Enhanced SuperSpeed
    hub 1-0:1.0: USB hub found
    hub 1-0:1.0: 1 port detected
    usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
    hub 2-0:1.0: USB hub found
    hub 2-0:1.0: 1 port detected

In this case, only usb devices for a800000 are showing:

    dracut:/# ls -alh /sys/bus/usb/devices
    total 0
    drwxr-xr-x 2 root root 0 Feb 27 00:00 .
    drwxr-xr-x 4 root root 0 Feb 27 00:00 ..
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 1-0:1.0 -> ../../../devices/platform/soc@0/a8f8800.usb/a800000.usb/xhci-hcd.1.auto/usb1/1-0:1.0
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 2-0:1.0 -> ../../../devices/platform/soc@0/a8f8800.usb/a800000.usb/xhci-hcd.1.auto/usb2/2-0:1.0
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 usb1 -> ../../../devices/platform/soc@0/a8f8800.usb/a800000.usb/xhci-hcd.1.auto/usb1
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 usb2 -> ../../../devices/platform/soc@0/a8f8800.usb/a800000.usb/xhci-hcd.1.auto/usb2

This happens approximately 1 out of 2 reboots. Here's the kernel output
when initialization succeeds:

    dwc3 a600000.usb: Adding to iommu group 2
    dwc3 a800000.usb: Adding to iommu group 3
    xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
    xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
    xhci-hcd xhci-hcd.0.auto: hcc params 0x0110ffc5 hci version 0x110 quirks 0x0000000000010010
    xhci-hcd xhci-hcd.0.auto: irq 161, io mem 0x0a800000
    xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
    xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
    xhci-hcd xhci-hcd.0.auto: Host supports USB 3.1 Enhanced SuperSpeed
    hub 1-0:1.0: USB hub found
    hub 1-0:1.0: 1 port detected
    usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
    hub 2-0:1.0: USB hub found
    hub 2-0:1.0: 1 port detected
    dwc3 a400000.usb: Adding to iommu group 4
    xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
    xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 3
    xhci-hcd xhci-hcd.1.auto: USB3 root hub has no ports
    xhci-hcd xhci-hcd.1.auto: hcc params 0x0220fe65 hci version 0x110 quirks 0x0000000000010010
    xhci-hcd xhci-hcd.1.auto: irq 162, io mem 0x0a400000
    hub 3-0:1.0: USB hub found
    hub 3-0:1.0: 1 port detected

And the list of usb devices:

    dracut:/# ls -alh /sys/bus/usb/devices
    total 0
    drwxr-xr-x 2 root root 0 Feb 27 00:00 .
    drwxr-xr-x 4 root root 0 Feb 27 00:00 ..
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 1-0:1.0 -> ../../../devices/platform/soc@0/a8f8800.usb/a800000.usb/xhci-hcd.0.auto/usb1/1-0:1.0
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 2-0:1.0 -> ../../../devices/platform/soc@0/a8f8800.usb/a800000.usb/xhci-hcd.0.auto/usb2/2-0:1.0
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 3-0:1.0 -> ../../../devices/platform/soc@0/a4f8800.usb/a400000.usb/xhci-hcd.1.auto/usb3/3-0:1.0
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 usb1 -> ../../../devices/platform/soc@0/a8f8800.usb/a800000.usb/xhci-hcd.0.auto/usb1
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 usb2 -> ../../../devices/platform/soc@0/a8f8800.usb/a800000.usb/xhci-hcd.0.auto/usb2
    lrwxrwxrwx 1 root root 0 Feb 27 00:00 usb3 -> ../../../devices/platform/soc@0/a4f8800.usb/a400000.usb/xhci-hcd.1.auto/usb3

Have you also encountered this?

Best,

Adrien


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linux-phy@lists.infradead.org
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  parent reply	other threads:[~2023-04-24 22:43 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-21 13:39 [PATCH v1 0/6] arm64: qcom: sa8775p: add support for USB Shazad Hussain
2023-04-21 13:39 ` [PATCH v1 1/6] dt-bindings: usb: qcom,dwc3: Add bindings for SA8775P Shazad Hussain
2023-04-27 14:22   ` Rob Herring
2023-04-27 16:48     ` Shazad Hussain
2023-04-21 13:39 ` [PATCH v1 2/6] dt-bindings: phy: qcom,usb-snps-femto-v2: " Shazad Hussain
2023-04-27 14:22   ` Rob Herring
2023-04-21 13:39 ` [PATCH v1 3/6] dt-bindings: phy: qcom,sc8280xp-qmp-usb3-uni: Add SA8775P USB PHY binding Shazad Hussain
2023-04-27 14:22   ` Rob Herring
2023-04-21 13:39 ` [PATCH v1 4/6] phy: qcom-qmp: Add SA8775P USB3 UNI phy Shazad Hussain
2023-04-22  0:09   ` Dmitry Baryshkov
2023-04-21 13:39 ` [PATCH v1 5/6] arm64: dts: qcom: sa8775p: add USB nodes Shazad Hussain
2023-04-21 13:39 ` [PATCH v1 6/6] arm64: dts: qcom: sa8775p-ride: enable " Shazad Hussain
2023-04-22  0:10   ` Dmitry Baryshkov
2023-04-24 22:35 ` Adrien Thierry [this message]
2023-04-24 23:03   ` [PATCH v1 0/6] arm64: qcom: sa8775p: add support for USB Dmitry Baryshkov
2023-04-25 18:03     ` Adrien Thierry
2023-04-28 21:41       ` Dmitry Baryshkov
2023-05-02 18:49         ` Adrien Thierry
2023-04-26 12:05   ` Shazad Hussain
2023-04-26 23:42   ` Konrad Dybcio
2023-04-27  3:05     ` Shazad Hussain
2023-04-27 17:24     ` Adrien Thierry

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