Pandita, Vikram wrote: > >> -----Original Message----- >> From: Gary Thomas [mailto:gary@xxxxxxxxxxxx] >> Sent: Tuesday, June 09, 2009 1:28 PM >> To: Pandita, Vikram >> Cc: linux-omap@xxxxxxxxxxxxxxx >> Subject: Re: MUSB Host problems >> >> Pandita, Vikram wrote: >>>> -----Original Message----- >>>> From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of Gary >>>> Thomas >>>> Sent: Tuesday, June 09, 2009 12:46 PM >>>> To: linux-omap@xxxxxxxxxxxxxxx >>>> Subject: MUSB Host problems >>>> >>>> I'm trying to get MUSB Host working on my 3530 platform (very >>> Based on your description, its not MUSB but the USBHOST EHCI block that you want to get working. >> Sorry, mistaken terminology. Yes, I'm trying to get the host ECHI working. >> >>>> similar to the Beagle). When I startup, I get this message: >>>> Clock usbhost_48m_fck didn't enable in 100000 tries >>> This is bad >> Why? What does it mean? How do I fix it? > > The ehci driver on linux-omap works for Beagleboard and sdp. > so this may not be a fatal problem > >>>> What does this mean? How do I fix it? >>>> >>>> Currently, the USB subsystem finds the various hubs (ports 0-2). >>>> The OTG port (0) works great. When I plug in a device to USB-1, >>> Is this a full speed device? >>> >>>> it sees it, but immediately gives up :-( >>>> ehci-omap ehci-omap.0: GetStatus port 1 status 001803 POWER sig=j CSC CONNECT >>>> hub 1-0:1.0: port 1: status 0501 change 0001 >>>> hub 1-0:1.0: state 7 ports 3 chg 0002 evt 0000 >>>> hub 1-0:1.0: port 1, status 0501, change 0000, 480 Mb/s >>>> ehci-omap ehci-omap.0: port 1 full speed --> companion >>> Looks like your device is getting recognized as a full speed. >>> So EHCI cannot handle it. >> Odd, this is a high speed device (USB 2.0). I also tried a 2.0 hub, same result. >> What could confuse it like this? > > Is it PHY mode or TLL mode? > If its PHY: then the transceiver used definitely matters. > SDP has ISP1504 and > Beagle board has SMSC phy > > The 60Mhz clock is fed from omap into the Transceiver (Input clocking mode). > Only few phy's in market support this. > >>> You need to have OHCI driver built in which is not present in linux-omap code base. >> Do, how does one use an arbitrary device on the EHCI port? Must I use a 2.0 hub? >> >>>> ehci-omap ehci-omap.0: GetStatus port 1 status 003801 POWER OWNER sig=j CONNECT >>>> hub 1-0:1.0: port 1 not reset yet, waiting 50ms >>>> ehci-omap ehci-omap.0: GetStatus port 1 status 003002 POWER OWNER sig=se0 CSC >>>> hub 1-0:1.0: unable to enumerate USB device on port 1 >>>> hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0002 >>>> hub 1-0:1.0: hub_suspend >>>> Then it's dead. Any ideas? >> Note: this is unproven hardware, I'm mostly looking for ideas on >> how to troubleshoot the problems. > > Have one side working: > Say have EHCI working on SDP/Beagle and then connect your device to it. As I said, unproven hardware. It turns out the PHY was [hardware strapping] set in the wrong mode. Fixing this and all seems to work. -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------ -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
