[PATCH v2 1/3] devicetree: bindings: Document qcom, msm-id and qcom, board-id

Kumar Gala
2015-03-06T20:37:52Z

On Mar 6, 2015, at 1:15 PM, Olof Johansson <olof@lixom.net> wrote:

> On Fri, Mar 6, 2015 at 8:08 AM, Kumar Gala <galak@codeaurora.org> wrote:
>>
>> On Mar 5, 2015, at 7:59 PM, Olof Johansson <olof@lixom.net> wrote:
>>
>>> On Thu, Mar 5, 2015 at 12:23 PM, Kumar Gala <galak@codeaurora.org> wrote:
>>>>
>>>> On Mar 5, 2015, at 1:42 PM, Kevin Hilman <khilman@kernel.org> wrote:
>>>>
>>>>> Kumar Gala <galak@codeaurora.org> 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@vger.kernel.org>
>>>>>> Signed-off-by: Kumar Gala <galak@codeaurora.org>
>>>>>
>>>>> 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.

- k