On 03/05/2015 09:28 PM, Rob Clark wrote: > 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.. I think you're talking about the boot flow from plain poweron which I wish I knew more about, but in case it's any help, here are some fastboot boot steps what worked for me a while back. http://elinux.org/Dragonboard/APQ8074 Chris -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project -- 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
