On Monday 14 July 2014 09:13 AM, Sekhar Nori wrote: > On OMAP SOCs using PL310 controllers, power_ctrl register is not > accessible from non-secure software even on PL310 versions which > support it. The secure code takes care of setting it up correctly > and power transitions are proven on these devices. > > For example, AM437x has L2C-310 version r3p3 and ROM code on that > device does not support writing to L2C-310 power control register. > The L2C driver, however, tries writing to this register for all > revisions >= r3p0. > > This leads to a warning dump on boot which leads most users to believe > that L2 cache is non-functional. > > Since the problem is understood, and cannot be addressed through > software, replace the warning with a pr_info() while maintaining the > WARN_ON() for other truly unexpected scenarios. > > Reported-by: Nishanth Menon <nm@xxxxxx> > Tested-by: Felipe Balbi <balbi@xxxxxx> > Signed-off-by: Sekhar Nori <nsekhar@xxxxxx> > --- > Only description updated since v1 > Thanks for update. Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx> -- 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
