On Wed, 09 Jan 2013 11:24:09 +0100 Michael Trimarchi <mich...@amarulasolutions.com> wrote:
> Hi Neil > > On 01/09/2013 11:19 AM, NeilBrown wrote: > > On Wed, 09 Jan 2013 12:00:05 +0200 Igor Grinberg <grinb...@compulab.co.il> > > wrote: > > > >> -----BEGIN PGP SIGNED MESSAGE----- > >> Hash: SHA1 > > > >> Hi Neil, > > > >> On 01/09/13 00:29, NeilBrown wrote: > >>> > >>> Hi, > >>> I'm trying to get off_mode working reliably on my gta04 mobile phone. > >>> > >>> My current stumbling block is USB. The "Option" GSM module is attached > >>> via > >>> USB (there is a separate transceiver chip attached to port 1 which is > >>> placed > >>> in OMAP_EHCI_PORT_MODE_PHY). > > > >> Which PHY is this (vendor/model)? > > > > Hi Igor, > > it is the SMSC USB3322 > > > > http://www.smsc.com/media/Downloads_Public/Data_Sheets/3320.pdf > > > > > > BTW I subsequently discovered that keeping USBHOST out off off_mode only > > sometimes avoid the problem, not always. So there are probably multiple > > issues :-( > > Are you sure that you don't have glitch on power, reset pin during suspend? > No, I don't really have the equipment to measure such things. But is it likely? Would enabling off_mode make it more likely? Can you suggest some way I could test the hypothesis? The power pin is connected to a 3v3 regulator which certainly should stay on the whole time and other things which depend on it keep working. The reset line is connected to GPIO174 which is configured: # cat /sys/kernel/debug/omap_mux/mcspi1_cs0 name: mcspi1_cs0.gpio_174 (0x480021ce/0x19e = 0x011c), b ac2, t NA mode: OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE4 signals: mcspi1_cs0 | sdmmc2_dat7 | NA | NA | gpio_174 | NA | NA | safe_mode The "PIN_INPUT" seems a bit odd, so I changed it to OMAP_PIN_OUTPUT but that didn't appear to make any difference. Thanks, NeilBrown
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