On Fri, 2012-04-20 at 20:21 +0530, Datta, Shubhrajyoti wrote: > On Fri, Apr 20, 2012 at 8:13 PM, Tero Kristo <t-kristo@xxxxxx> wrote: > > On Fri, 2012-04-20 at 06:55 -0700, Kevin Hilman wrote: > >> Tero Kristo <t-kristo@xxxxxx> writes: > >> > >> [...] > >> > >> >> I tried your branch on gp/emu devices but could not reproduce this issue. > >> >> My observation is that while resuming, omap_hsmmc.1 eMMC is > >> >> trying to turn on phoenix vaux1 regulator via i2c which fails due > >> >> to controller timeout. > >> >> Note: eMMC is present only on sdp/blaze > >> > > >> > Did you try this with off-mode enabled and did you check the device > >> > actually goes to off? (see pm_debug/count and verify core off count is > >> > increasing.) And as said, I was only able to see this problem on a blaze > >> > device, panda works fine. But yes, you are probably right and it is not > >> > an MMC driver issue but I2C. > >> > >> Can you try the patch below? It sounds like the same problem. > > > > Doesn't help with this one. I guess I2C loses context during device off > > and it is not restored properly. > > > > -Tero > Could you try the following patch > > https://lkml.org/lkml/2012/3/30/345 That does the trick, after this it is working fine on blaze, and this also fixes the timeout issues seen on panda board (meaning wake-up from device off is much faster.) -Tero -- 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
