On Tue, Mar 10, 2015 at 10:13 AM, Kumar Gala <galak@xxxxxxxxxxxxxx> wrote: > > On Mar 9, 2015, at 7:11 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > >> On Friday 06 March 2015 14:37:52 Kumar Gala wrote: >>> On Mar 6, 2015, at 1:15 PM, Olof Johansson <olof@xxxxxxxxx> wrote: >>> >>>> On Fri, Mar 6, 2015 at 8:08 AM, Kumar Gala <galak@xxxxxxxxxxxxxx> wrote: >>>>> >>>>> On Mar 5, 2015, at 7:59 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? >>>>> >>>>> We can provide only one, we still need the IDs in the DT. >>>> >>>> How are the DTS provided? Concatenated with the kernel, or in a >>>> wrapped data format? Or in a separate partition from the kernel? >>> >>> Its a wrapped data format that is than concatenated with the kernel if I remember correctly. >> >> Then you should be able to create a tool that can write this concatenated >> format and insert these properties from a table that matches the boot >> loader, right? >> >> Arnd > > Are you suggesting the tool insert the properties in the DT? I’m not sure I understand what the point of doing that would be. To insert platform-local properties that mean nothing outside of the firmware packaging of the device trees, which is the case here? I think the idea of having the installer script inserting them is quite reasonable in this case. -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
