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Date:   Thu, 17 Jan 2019 10:52:48 -0700
From:   Jeffrey Hugo <jhugo@...eaurora.org>
To:     Marc Gonzalez <marc.w.gonzalez@...e.fr>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        MSM <linux-arm-msm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/6] MSM8998 basic USB support

On 1/17/2019 9:35 AM, Marc Gonzalez wrote:
> On 14/01/2019 17:35, Jeffrey Hugo wrote:
> 
>> This series provides basic USB support for MSM8998.  Currently missing is
>> wiring up the Type-C detection logic so that the controller can correctly
>> switch between host and peripheral modes.  Work to implement that is
>> ongoing, and expected to appear soon in followup patches.  Also missing is
>> Display Port (DP) support which apparently is different from sdm845 and
>> needs additional investigation.
>>
>> v2:
>> -Fixed typo in QUSB2 bindings changes
>> -Split out bindings changes
>> -Fixed dual lane support in QMP to reflect Doug's updates
>> -Dropped the clock fixes which were accepted
>>
>> Jeffrey Hugo (6):
>>    clk: qcom: Add missing freq for usb30_master_clk on 8998
>>    clk: qcom: Skip halt checks on gcc_usb3_phy_pipe_clk for 8998
>>    phy: qcom-qusb2: Add QUSB2 PHY support for msm8998
>>    phy: qcom-qmp: Add QMP V3 USB3 PHY support for msm8998
>>    usb: dwc3: qcom: Add support for MSM8998
>>    arm64: dts: qcom: msm8998: Add USB-related nodes
>>
>>   .../devicetree/bindings/phy/qcom-qmp-phy.txt       |   5 +
>>   .../devicetree/bindings/phy/qcom-qusb2-phy.txt     |   1 +
>>   .../devicetree/bindings/usb/qcom,dwc3.txt          |   1 +
>>   arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi          |  22 ++++
>>   arch/arm64/boot/dts/qcom/msm8998.dtsi              |  90 +++++++++++++
>>   drivers/clk/qcom/gcc-msm8998.c                     |   3 +-
>>   drivers/phy/qualcomm/phy-qcom-qmp.c                | 142 +++++++++++++++++++++
>>   drivers/phy/qualcomm/phy-qcom-qmp.h                |   4 +
>>   drivers/phy/qualcomm/phy-qcom-qusb2.c              |  41 ++++++
>>   drivers/usb/dwc3/dwc3-qcom.c                       |   1 +
>>   10 files changed, 309 insertions(+), 1 deletion(-)
> 
> I am not able to say why (yet) but this doesn't work for me.
> Nothing happens when I insert a USB device. Any ideas?

No idea right now.  I'm out traveling.  Be back Monday.  Lets sync up 
then and figure this out for you.

> 
> # lsusb -v
> 
> Bus 002 Device 001: ID 1d6b:0003
> Device Descriptor:
>    bLength                18
>    bDescriptorType         1
>    bcdUSB               3.00
>    bDeviceClass            9
>    bDeviceSubClass         0
>    bDeviceProtocol         3
>    bMaxPacketSize0         9
>    idVendor           0x1d6b
>    idProduct          0x0003
>    bcdDevice            5.00
>    iManufacturer           3 Linux 5.0.0-rc1 xhci-hcd
>    iProduct                2 xHCI Host Controller
>    iSerial                 1 xhci-hcd.0.auto
>    bNumConfigurations      1
>    Configuration Descriptor:
>      bLength                 9
>      bDescriptorType         2
>      wTotalLength       0x001f
>      bNumInterfaces          1
>      bConfigurationValue     1
>      iConfiguration          0
>      bmAttributes         0xe0
>        Self Powered
>        Remote Wakeup
>      MaxPower                0mA
>      Interface Descriptor:
>        bLength                 9
>        bDescriptorType         4
>        bInterfaceNumber        0
>        bAlternateSetting       0
>        bNumEndpoints           1
>        bInterfaceClass         9
>        bInterfaceSubClass      0
>        bInterfaceProtocol      0
>        iInterface              0
>        Endpoint Descriptor:
>          bLength                 7
>          bDescriptorType         5
>          bEndpointAddress     0x81  EP 1 IN
>          bmAttributes            3
>            Transfer Type            Interrupt
>            Synch Type               None
>            Usage Type               Data
>          wMaxPacketSize     0x0004  1x 4 bytes
>          bInterval              12
>          bMaxBurst               0
> Hub Descriptor:
>    bLength              12
>    bDescriptorType      42
>    nNbrPorts             1
>    wHubCharacteristic 0x000a
>      No power switching (usb 1.0)
>      Per-port overcurrent protection
>    bPwrOn2PwrGood       10 * 2 milli seconds
>    bHubContrCurrent      0 milli Ampere
>    bHubDecLat          0.0 micro seconds
>    wHubDelay             0 nano seconds
>    DeviceRemovable    0x00
>   Hub Port Status:
>     Port 1: 0000.02a0 5Gbps power Rx.Detect
> Binary Object Store Descriptor:
>    bLength                 5
>    bDescriptorType        15
>    wTotalLength       0x000f
>    bNumDeviceCaps          1
>    SuperSpeed USB Device Capability:
>      bLength                10
>      bDescriptorType        16
>      bDevCapabilityType      3
>      bmAttributes         0x02
>        Latency Tolerance Messages (LTM) Supported
>      wSpeedsSupported   0x0008
>        Device can operate at SuperSpeed (5Gbps)
>      bFunctionalitySupport   3
>        Lowest fully-functional device speed is SuperSpeed (5Gbps)
>      bU1DevExitLat           0 micro seconds
>      bU2DevExitLat           0 micro seconds
> can't get debug descriptor: Resource temporarily unavailable
> Device Status:     0x0001
>    Self Powered
> 
> Bus 001 Device 001: ID 1d6b:0002
> Device Descriptor:
>    bLength                18
>    bDescriptorType         1
>    bcdUSB               2.00
>    bDeviceClass            9
>    bDeviceSubClass         0
>    bDeviceProtocol         1
>    bMaxPacketSize0        64
>    idVendor           0x1d6b
>    idProduct          0x0002
>    bcdDevice            5.00
>    iManufacturer           3 Linux 5.0.0-rc1 xhci-hcd
>    iProduct                2 xHCI Host Controller
>    iSerial                 1 xhci-hcd.0.auto
>    bNumConfigurations      1
>    Configuration Descriptor:
>      bLength                 9
>      bDescriptorType         2
>      wTotalLength       0x0019
>      bNumInterfaces          1
>      bConfigurationValue     1
>      iConfiguration          0
>      bmAttributes         0xe0
>        Self Powered
>        Remote Wakeup
>      MaxPower                0mA
>      Interface Descriptor:
>        bLength                 9
>        bDescriptorType         4
>        bInterfaceNumber        0
>        bAlternateSetting       0
>        bNumEndpoints           1
>        bInterfaceClass         9
>        bInterfaceSubClass      0
>        bInterfaceProtocol      0
>        iInterface              0
>        Endpoint Descriptor:
>          bLength                 7
>          bDescriptorType         5
>          bEndpointAddress     0x81  EP 1 IN
>          bmAttributes            3
>            Transfer Type            Interrupt
>            Synch Type               None
>            Usage Type               Data
>          wMaxPacketSize     0x0004  1x 4 bytes
>          bInterval              12
> Hub Descriptor:
>    bLength               9
>    bDescriptorType      41
>    nNbrPorts             1
>    wHubCharacteristic 0x000a
>      No power switching (usb 1.0)
>      Per-port overcurrent protection
>      TT think time 8 FS bits
>    bPwrOn2PwrGood       10 * 2 milli seconds
>    bHubContrCurrent      0 milli Ampere
>    DeviceRemovable    0x00
>    PortPwrCtrlMask    0xff
>   Hub Port Status:
>     Port 1: 0000.0100 power
> can't get device qualifier: Resource temporarily unavailable
> can't get debug descriptor: Resource temporarily unavailable
> Device Status:     0x0001
>    Self Powered
> 
> 
> NET: Registered protocol family 1
> workingset: timestamp_bits=62 max_order=20 bucket_order=0
> Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
> qcom-qmp-phy c010000.phy: Linked as a consumer to regulator.15
> qcom-qmp-phy c010000.phy: Linked as a consumer to regulator.16
> qcom-qmp-phy c010000.phy: Registered Qcom-QMP phy
> qcom-qusb2-phy c012000.phy: Linked as a consumer to regulator.26
> l24: supplied by bob
> qcom-qusb2-phy c012000.phy: Linked as a consumer to regulator.38
> qcom-qusb2-phy c012000.phy: Registered Qcom-QUSB2 phy
> Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
> msm_serial c1b0000.serial: msm_serial: detected port #0
> msm_serial c1b0000.serial: uartclk = 1843200
> c1b0000.serial: ttyMSM0 at MMIO 0xc1b0000 (irq = 17, base_baud = 115200) is a MSM
> msm_serial: console setup on port #0
> printk: console [ttyMSM0] enabled
> msm_serial: driver initialized
> dwc3 a800000.dwc3: Failed to get clk 'ref': -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: hcc params 0x0230fe65 hci version 0x110 quirks 0x0000000002010010
> xhci-hcd xhci-hcd.0.auto: irq 18, io mem 0x0a800000
> usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.00
> usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> usb usb1: Product: xHCI Host Controller
> usb usb1: Manufacturer: Linux 5.0.0-rc1 xhci-hcd
> usb usb1: SerialNumber: xhci-hcd.0.auto
> hub 1-0:1.0: USB hub found
> hub 1-0:1.0: 1 port detected
> 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 3.0  SuperSpeed
> usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
> usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.00
> usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> usb usb2: Product: xHCI Host Controller
> usb usb2: Manufacturer: Linux 5.0.0-rc1 xhci-hcd
> usb usb2: SerialNumber: xhci-hcd.0.auto
> hub 2-0:1.0: USB hub found
> hub 2-0:1.0: 1 port detected
> usbcore: registered new interface driver usb-storage
> 


-- 
Jeffrey Hugo
Qualcomm Datacenter Technologies as an affiliate of Qualcomm 
Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.

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