Hi, On Fri, 25 Mar 2011, Cousson, Benoit wrote: > On 3/25/2011 6:38 AM, Paul Walmsley wrote: > > > > On Thu, 24 Feb 2011, Avinash.H.M wrote: > > > > > Some of the omap2, omap3 peripherals support software reset. This > > > > > can be done through the softreset bit in sysconfig register. > > > > > The reset status can be checked through resetdone bit of > > > > > sysstatus register. syss_has_reset_status is added to the hwmod > > > > > database of peripherals which have resetdone bit in sysstatus > > > > > register. > > > > > > > > > > Cc: Rajendra Nayak<rnayak@xxxxxx> > > > > > Cc: Paul Walmsley<paul@xxxxxxxxx> > > > > > Cc: Benoit Cousson<b-cousson@xxxxxx> > > > > > Cc: Kevin Hilman<khilman@xxxxxx> > > > > > Reviewed-by: Govindraj.R<govindraj.raja@xxxxxx> > > > > > Signed-off-by: Avinash.H.M<avinashhm@xxxxxx> > > > > This patch is causing I2C softreset timeouts in the hwmod layer on OMAP2 > > and 3. Could you please take a look at this and figure out what is going > > on? > > I think this is probably due to the nasty I2C softreset bug with discussed > last year with Paul Brady. > > AFAIR, the I2C cannot be reset by just writing to the SYSCONFIG softreset bit. > You need to play with other registers too. Thanks Benoît. So then, Avinash, you might need to create a custom hwmod class reset function for the I2C block (viz., struct omap_hwmod_class.reset) > Avinash, > You should try to look at 3430 or 3630 errata. You will probably find the bug > I'm referring to. - Paul
