On Thu, Mar 5, 2015 at 8:59 PM, Olof Johansson <olof@xxxxxxxxx> wrote: > On Thu, Mar 5, 2015 at 12:23 PM, Kumar Gala <galak@xxxxxxxxxxxxxx> wrote: >> >> On Mar 5, 2015, at 1:42 PM, Kevin Hilman <khilman@xxxxxxxxxx> wrote: >> >>> Kumar Gala <galak@xxxxxxxxxxxxxx> writes: >>> >>>> The top level qcom,msm-id and qcom,board-id are utilized by bootloaders >>>> on Qualcomm MSM platforms to determine which device tree should be >>>> utilized and passed to the kernel. >>>> >>>> Cc: <devicetree@xxxxxxxxxxxxxxx> >>>> Signed-off-by: Kumar Gala <galak@xxxxxxxxxxxxxx> >>> >>> Is this the special magic that allows qcom bootloaders to take a kernel >>> plus multiple DTBs and figure out which DTB to pass? >>> >>> Kevin >> >> yes > > That's a bummer. > > Luckily, the solution for upstream is still quite simple: Provide only > one devicetree, and it'll be used, right? > I never managed to figure out how to get that to work (at least on my apq8074 dragonboard.. fortunately ifc6540 seems to work w/ appended dtb).. kind of a pita because it is a bit of a non-standard boot.img format too.. Otoh getting an upstream (or even different kernel) kernel working can be hard enough as-is on random different tablet/phone/etc. Why not make whoever tries' life a bit easier by allowing some nonsense node into the qcom dtbs which makes it compatible w/ bootloaders already out there in the field ;-) BR, -R > > -Olof > -- > To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- 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
