On Wed 08 Jul 16:56 PDT 2015, Stephen Boyd wrote: > On 06/26/2015 02:50 PM, bjorn@xxxxxxx wrote: > > += EXAMPLE > > +The following example shows the SMEM setup for MSM8974, with a main SMEM region > > +at 0xfa00000 and an auxiliary region at 0xfc428000: > > + > > + reserved-memory { > > + #address-cells = <1>; > > + #size-cells = <1>; > > + ranges; > > + > > + smem_region: smem@fa00000 { > > + reg = <0xfa00000 0x200000>; > > + no-map; > > + }; > > + }; > > + > > + smem@fa00000 { > > This should be smem@fc428000 matching the first reg property. It's weird > though, because if smem is using a secondary region it will be under the > SoC node and have a reg property. Otherwise it would be directly under > the root node and only have a memory-region. It would be nice if we > could somehow move the rpm message ram (0xfc428000) into the > reserved-memory node so that we could use memory-region for both regions. > I agree, the semantics here became a little bit odd. I do not think we should list the 0xfc428000 region as a memory-region, as it's "device memory" and I do like the fact that we don't repeat ourselves with listing the memory-region as a reg. Therefor I think this is the least ugly option, but the address in the name of the node should be updated. > > + compatible = "qcom,smem"; > > + > > + memory-region = <&smem_region>; > > + reg = <0xfc428000 0x4000>; > > + > > + hwlocks = <&tcsr_mutex 3>; > > + }; > Thanks, Bjorn -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html