[PATCH v7 1/4] Documentation: dt: add common bindings for hwspinlock
From: Bjorn Andersson <hidden>
Date: 2015-02-16 20:30:41
Also in:
linux-devicetree, linux-omap, lkml
From: Bjorn Andersson <hidden>
Date: 2015-02-16 20:30:41
Also in:
linux-devicetree, linux-omap, lkml
On Fri, Jan 30, 2015 at 9:41 PM, Ohad Ben-Cohen [off-list ref] wrote: [..]
Since the existence of several hwblocks is still fictional (Bjorn, please confirm too?), we may prefer to introduce changes to support it only when it shows up; it all depends on the amount of changes needed. Suman, care to take a look please?
It turns out that the Qualcomm platforms have two additional "remote spinlock" mechanisms - both using shared memory. On most platforms only 1 (out of these 3) is actually consumed, but e.g. the older msm7x30 uses 2 of them (SMEM and DAL). Due to its age I don't think it's on anyones todo list to actually support this platform as of today; but it's out there. None of these hwlocks are allocated dynamically, so if needed a dynamic base_id (-1 like other frameworks) would be a acceptable solution - and can easily be implemented when we need it. Regards, Bjorn