From: Sudeep KarkadaNagesha <sudeep.karkadanagesha@xxxxxxx> Hi, These are couple of updates to existing PM/OPP library to support sharing of OPPs between different device nodes. Currently all the cpu nodes are parsed until the OPPs are found. This is essential to support cpuhotplug without having to replicate OPP information in all the cpu nodes. However in systems with multiple cpu power domain, its better to have OPP entry for each cpu. To avoid replication, phandle can be specified to the node which contains the full OPP information. Previously I had posted these patch[1] but didn't get much review. Previous approach mixed both OPP values and the phandle in the same property. The current approach adds new (optional) property to hold phandle if OPPs are shared. This makes it simpler and easier to be backward compatible. Regards, Sudeep [1] https://lkml.org/lkml/2013/5/1/84 Sudeep KarkadaNagesha (2): PM / OPP: add support to specify phandle of another node for OPP PM / OPP: check for existing OPP list when initialising from device tree Documentation/devicetree/bindings/power/opp.txt | 114 +++++++++++++++++++++--- drivers/base/power/opp.c | 18 +++- 2 files changed, 118 insertions(+), 14 deletions(-) -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
