ODROID-C1/-C2 USB Detection only triggered by some devices
Martin Blumenstingl
martin.blumenstingl at googlemail.com
Wed Jun 30 16:09:33 PDT 2021
Hi Minas,
On Tue, Jun 29, 2021 at 6:30 PM Martin Blumenstingl
<martin.blumenstingl at googlemail.com> wrote:
>
> Hi Alan,
>
> On Tue, Jun 29, 2021 at 6:18 PM Alan Stern <stern at rowland.harvard.edu> wrote:
> [...]
> > > > usbcore.autosuspend=-1
> > > wow, this helps indeed
> > > my steps are:
> > > - power off my Odroid-C1+
> > > - unplug all USB devices
> > > - boot with usbcore.autosuspend=-1 in the kernel cmdline
> > > - plugin my Corsair Voyager USB 3.0 flash drive (which was only
> > > detected before if an additional USB 2.0 flash drive was plugged in
> > > during boot)
> > > -> without any lsusb magic the device was immediately recognized
> >
> > That does show pretty convincingly that runtime suspend is causing the
> > problem. But I still have no idea why the problem affects some devices
> > and not others. It's a mystery.
> Maybe because there's two related problems (I am guessing here):
> The first issue is that USB hotplug is not working at all on my
> Odroid-C1+ (which means: dwc2 + GL852G USB hub).
> The second issue is that the workaround we had before (running lsusb
> -vv to make "hot plugged" devices show up) is not working for some USB
> devices.
>
> It seems that using a different workaround (usbcore.autosuspend=-1)
> makes *all* USB devices show up - even without any "lsusb -vv" call.
> So I think we should focus on the first issue as it may also fix the
> other problem as well.
above paragraph sums up the issues which Matt and I are seeing (on
Odroid-C1+ and Odroid-C2) in case you didn't follow the full email
thread
> [...]
> > > after rebooting without usbcore.autosuspend=-1 (and no USB device
> > > plugged in during boot):
> > > # grep "" /sys/bus/usb/devices/*/power/autosuspend
> > > /sys/bus/usb/devices/1-1/power/autosuspend:0
> > > /sys/bus/usb/devices/usb1/power/autosuspend:0
> > >
> > > I think the next step is narrowing down which component is causing this issue.
> >
> > Maybe Minas can help. He knows a lot more about dwc2 than I do (which
> > is practically nothing).
> I'll wait for Minas then
I have attached the dwc2 debugfs output to this email as well as I
think that it'll be useful
unfortunately I could not attach the "regdump" because that hangs my
Odroid-C1+ (not sure but this seems like an unrelated issue?)
in params.c dwc2_set_amlogic_params is used to override a few hardware
parameters.
power_down is one of them (although Alan's comment suggests that it
may not be related) is overwritten there to
DWC2_POWER_DOWN_PARAM_NONE. When removing that overriding then the
value (probably as set by the designer) is
DWC2_POWER_DOWN_PARAM_PARTIAL.
Best regards,
Martin
-------------- next part --------------
/sys/kernel/debug/usb/c90c0000.usb/dr_mode:host
/sys/kernel/debug/usb/c90c0000.usb/fifo:Non-periodic FIFOs:
/sys/kernel/debug/usb/c90c0000.usb/fifo:RXFIFO: Size 512
/sys/kernel/debug/usb/c90c0000.usb/fifo:NPTXFIFO: Size 500, Start 0x00000200
/sys/kernel/debug/usb/c90c0000.usb/fifo:
/sys/kernel/debug/usb/c90c0000.usb/fifo:Periodic TXFIFOs:
/sys/kernel/debug/usb/c90c0000.usb/hw_params:op_mode : 5
/sys/kernel/debug/usb/c90c0000.usb/hw_params:arch : 2
/sys/kernel/debug/usb/c90c0000.usb/hw_params:dma_desc_enable : 1
/sys/kernel/debug/usb/c90c0000.usb/hw_params:enable_dynamic_fifo : 1
/sys/kernel/debug/usb/c90c0000.usb/hw_params:en_multiple_tx_fifo : 0
/sys/kernel/debug/usb/c90c0000.usb/hw_params:rx_fifo_size : 2048
/sys/kernel/debug/usb/c90c0000.usb/hw_params:host_nperio_tx_fifo_size : 2048
/sys/kernel/debug/usb/c90c0000.usb/hw_params:dev_nperio_tx_fifo_size : 0
/sys/kernel/debug/usb/c90c0000.usb/hw_params:host_perio_tx_fifo_size : 2048
/sys/kernel/debug/usb/c90c0000.usb/hw_params:nperio_tx_q_depth : 4
/sys/kernel/debug/usb/c90c0000.usb/hw_params:host_perio_tx_q_depth : 4
/sys/kernel/debug/usb/c90c0000.usb/hw_params:dev_token_q_depth : 8
/sys/kernel/debug/usb/c90c0000.usb/hw_params:max_transfer_size : 524287
/sys/kernel/debug/usb/c90c0000.usb/hw_params:max_packet_count : 1023
/sys/kernel/debug/usb/c90c0000.usb/hw_params:host_channels : 16
/sys/kernel/debug/usb/c90c0000.usb/hw_params:hs_phy_type : 1
/sys/kernel/debug/usb/c90c0000.usb/hw_params:fs_phy_type : 0
/sys/kernel/debug/usb/c90c0000.usb/hw_params:i2c_enable : 0
/sys/kernel/debug/usb/c90c0000.usb/hw_params:num_dev_ep : 2
/sys/kernel/debug/usb/c90c0000.usb/hw_params:num_dev_perio_in_ep : 0
/sys/kernel/debug/usb/c90c0000.usb/hw_params:total_fifo_size : 1984
/sys/kernel/debug/usb/c90c0000.usb/hw_params:power_optimized : 1
/sys/kernel/debug/usb/c90c0000.usb/hw_params:utmi_phy_data_width : 1
/sys/kernel/debug/usb/c90c0000.usb/hw_params:snpsid : 0x4f54310a
/sys/kernel/debug/usb/c90c0000.usb/hw_params:dev_ep_dirs : 0x0
/sys/kernel/debug/usb/c90c0000.usb/params:otg_cap : 2
/sys/kernel/debug/usb/c90c0000.usb/params:dma_desc_enable : 0
/sys/kernel/debug/usb/c90c0000.usb/params:dma_desc_fs_enable : 0
/sys/kernel/debug/usb/c90c0000.usb/params:speed : 0
/sys/kernel/debug/usb/c90c0000.usb/params:enable_dynamic_fifo : 1
/sys/kernel/debug/usb/c90c0000.usb/params:en_multiple_tx_fifo : 0
/sys/kernel/debug/usb/c90c0000.usb/params:host_rx_fifo_size : 512
/sys/kernel/debug/usb/c90c0000.usb/params:host_nperio_tx_fifo_size : 500
/sys/kernel/debug/usb/c90c0000.usb/params:host_perio_tx_fifo_size : 500
/sys/kernel/debug/usb/c90c0000.usb/params:max_transfer_size : 524287
/sys/kernel/debug/usb/c90c0000.usb/params:max_packet_count : 1023
/sys/kernel/debug/usb/c90c0000.usb/params:host_channels : 16
/sys/kernel/debug/usb/c90c0000.usb/params:phy_type : 1
/sys/kernel/debug/usb/c90c0000.usb/params:phy_utmi_width : 16
/sys/kernel/debug/usb/c90c0000.usb/params:phy_ulpi_ddr : 0
/sys/kernel/debug/usb/c90c0000.usb/params:phy_ulpi_ext_vbus : 0
/sys/kernel/debug/usb/c90c0000.usb/params:i2c_enable : 0
/sys/kernel/debug/usb/c90c0000.usb/params:ipg_isoc_en : 0
/sys/kernel/debug/usb/c90c0000.usb/params:ulpi_fs_ls : 0
/sys/kernel/debug/usb/c90c0000.usb/params:host_support_fs_ls_low_power : 0
/sys/kernel/debug/usb/c90c0000.usb/params:host_ls_low_power_phy_clk : 0
/sys/kernel/debug/usb/c90c0000.usb/params:activate_stm_fs_transceiver : 0
/sys/kernel/debug/usb/c90c0000.usb/params:activate_stm_id_vb_detection : 0
/sys/kernel/debug/usb/c90c0000.usb/params:ts_dline : 0
/sys/kernel/debug/usb/c90c0000.usb/params:reload_ctl : 1
/sys/kernel/debug/usb/c90c0000.usb/params:ahbcfg : 0xa
/sys/kernel/debug/usb/c90c0000.usb/params:uframe_sched : 1
/sys/kernel/debug/usb/c90c0000.usb/params:external_id_pin_ctl : 0
/sys/kernel/debug/usb/c90c0000.usb/params:power_down : 0
/sys/kernel/debug/usb/c90c0000.usb/params:lpm : 0
/sys/kernel/debug/usb/c90c0000.usb/params:lpm_clock_gating : 0
/sys/kernel/debug/usb/c90c0000.usb/params:besl : 0
/sys/kernel/debug/usb/c90c0000.usb/params:hird_threshold_en : 0
/sys/kernel/debug/usb/c90c0000.usb/params:hird_threshold : 0
/sys/kernel/debug/usb/c90c0000.usb/params:service_interval : 0
/sys/kernel/debug/usb/c90c0000.usb/params:host_dma : 1
/sys/kernel/debug/usb/c90c0000.usb/params:g_dma : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_dma_desc : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_rx_fifo_size : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_np_tx_fifo_size : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[0] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[1] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[2] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[3] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[4] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[5] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[6] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[7] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[8] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[9] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[10] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[11] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[12] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[13] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[14] : 0
/sys/kernel/debug/usb/c90c0000.usb/params:g_tx_fifo_size[15] : 0
More information about the linux-amlogic
mailing list