On Fri, Jan 9, 2015 at 11:21 PM, Suman Anna <s-anna@xxxxxx> wrote: > The remoteproc driver core currently relies on iommu_present() on > the bus the device is on, to perform MMU management. However, this > logic doesn't scale for multi-arch, especially for processors that > do not have an IOMMU. Replace this logic instead by using a h/w > capability flag for the presence of IOMMU in the rproc structure. > > This issue is seen on OMAP platforms when trying to add a remoteproc > driver for a small Cortex M3 called the WkupM3 used for suspend / > resume management on TI AM335/AM437x SoCs. This processor does not > have an MMU. Same is the case with another processor subsystem > PRU-ICSS on AM335/AM437x. All these are platform devices, and the > current iommu_present check will not scale for the same kernel image > to support OMAP4/OMAP5 and AM335/AM437x. > > The existing platform implementation drivers - OMAP remoteproc, STE > Modem remoteproc and DA8xx remoteproc, are updated as well to properly > configure the newly added rproc field. > > Cc: Robert Tivy <rtivy@xxxxxx> > Cc: Linus Walleij <linus.walleij@xxxxxxxxxx> > Signed-off-by: Suman Anna <s-anna@xxxxxx> Applied to remoteproc's for-next branch. Thanks, Ohad. -- 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
