cc'ing Nilesh, Rajendra Hi
On Fri, 2 Mar 2012, Tero Kristo wrote: > From: Mohan V <[email protected]> > > Currently the enabling and disabling of IO Daisy chain is not > according to the TRM. The below steps are followed to enable/ > disable the IO chain according to the "Sec 3.5.7.2.2 > I/O Wake-Up Mechanism" in OMAP3630 Public TRM[1]. > > Steps to enable IO chain: > [a] Set PM_WKEN_WKUP.EN_IO bit > [b] Set the PM_WKEN_WKUP.EN_IO_CHAIN bit > [c] Poll for PM_WKST_WKUP.ST_IO_CHAIN. > [d] When ST_IO_CHAIN bit set to 1, clear PM_WKEN_WKUP.EN_IO_CHAIN Looking at the above TRM section, it doesn't mention clearing PM_WKEN_WKUP.EN_IO_CHAIN at all. This only seems to be mentioned (in a rather unclear way) in the OMAP4430 TRM. Since Tero and Rajendra are reporting that this series works, I assume that the conclusion is that this patch description just needs to be fixed. Could someone confirm that this is indeed the case -- that I/O wakeups are expected to work when EN_IO_CHAIN/WUCLK_CTRL is 0? Is the I/O wakeup path from the pad to the PRCM wakeup line completely asynchronous? - Paul -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
