<xdarklight>
(that's in your v5.1 integ tree, but not upstreamed yet)
<narmstrong>
yes, it should maybe work, but it worked without :-/
<theperfectpunk>
narmstrong:
<theperfectpunk>
will try with it
<theperfectpunk>
thanks
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<BlueMatt>
which config options are likely required for gxbb (odroid-c2) usb?
<BlueMatt>
I enabled the obvious ones, but nothing in lsusb 0v
<BlueMatt>
-v
<BlueMatt>
I do see [ 0.376753] GPIO line 501 (usb-hub-reset) hogged as output/high
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<xdarklight>
BlueMatt: can you pastebin your .config? from the top of my head: CONFIG_USB_DWC2, CONFIG_REGULATOR_GPIO, CONFIG_PHY_MESON8B_USB2
<ukleinek>
BlueMatt: hogging a reset pin sounds wrong
<BlueMatt>
missing DWC2, let me try that then I'll dump my .config somewhere
<BlueMatt>
thanks y'all
<BlueMatt>
right, now it sees the hub but no devices
<xdarklight>
ukleinek: it's an unsolved problem with the USB devicetree bindings: devicetree bindings are only applied to devices which are visible on the bus but if the hub's reset line is active then it won't show up on the bus. you can describe the hub's reset line in .dts but the whole hub cannot be seen until the device comes out of reset ...
<xdarklight>
can you please pastebin the output of: cat /sys/kernel/debug/gpio
<xdarklight>
and then try "lsusb -vvvv" as root
<ukleinek>
BlueMatt: does your usb flash get power
<ukleinek>
?
<BlueMatt>
right, that comit is in this kernel, but after reboot it showed up, but hotplug appears to not work?
<BlueMatt>
reboot it showed up, hotplug its not there and isnt coming back
<xdarklight>
hmm, maybe there's some other fix in dwc2 which was not backported to v4.19
<BlueMatt>
happy to cherry-pick if you have a candidate
<xdarklight>
I typically test with -rc kernels and linux-next, I'll see if I spot something in the dwc2 history
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<xdarklight>
hmm, nothing stands out at first sight
<xdarklight>
can you compile and try Linux 5.1 or 5.2-rcX?
<BlueMatt>
yea, sure, will checkout 5.1 in a sec
<BlueMatt>
hmmm welp I tweaked some config and now hotplug is working in 4.9
<BlueMatt>
welp maybe I had some hotplug thing disabled....
<BlueMatt>
ah, no, hotplug works only if I have devices hooked up at startup
<BlueMatt>
if I reboot with nothing they appear not to
<BlueMatt>
I'll try with 5.1
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<BlueMatt>
nope, same thing with v5.1
<BlueMatt>
if I boot with nothing attached, plugging something in does nothing
<BlueMatt>
weirdly, it also depends on *which* device is attached at bootup....if I have this spinning usb disk attached at startup...nothing, if I have this usb drive attached at startup *as well*, both come up just fine
<BlueMatt>
saldy I have to run so cant debug further
<xdarklight>
BlueMatt: I'll try this on one of my 32-bit Meson boards (which use the same USB setup as GXBB on your Odroid-C2) later. however, I suspect that we need to report this to the dwc2 maintainers