Hi, Tony Lindgren <t...@atomide.com> writes: > * Felipe Balbi <ba...@kernel.org> [161208 11:17]: >> Tony Lindgren <t...@atomide.com> writes: >> > The call to pm_runtime_get_sync() in dwc3_omap_probe() will use it. >> >> right, but there's no runtime suspend until ->remove(). IOW, after >> pm_runtime_get_sync(), all necessary clocks should already be >> enabled. If they aren't, there's either an erratum or a bug in >> drivers/clk/ti/ > > I think it's some dependency to the dwc3 core probe. That's because I'm > able to read and print out the wrapper interrupt registers just fine > before the imprecise external abort happens in probe. So that means it's > something dwc3 specific after the TI wrapper module clckctl bit. > >> > Is there also some dwc3 internal clock? If we assume the usb_otg_ss >> > module is properly enabled it could be some dwc3 internal clock not >> > enabled? >> >> no extra clocks. > > It seems that if we get an interrupt before dwc3 core has probed with > of_platform_populate(), we get the imprecise external abort.
that's pretty odd. hwmod doesn't know about dwc3 core device, only usb_otg_ss (dwc3-omap.c). >> is IRQ status already 0x2121 from u-boot prompt? > > Yes md 0x4A020034 shows 0x2121. okay, so maybe something left from even earlier? OMAP5 can boot off USB peripheral. -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
