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

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Date:	Fri, 6 Mar 2015 10:08:09 -0600
From:	Kumar Gala <galak@...eaurora.org>
To:	Olof Johansson <olof@...om.net>
Cc:	Kevin Hilman <khilman@...nel.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"arm@...nel.org" <arm@...nel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Heiko Stübner <heiko@...ech.de>
Subject: Re: [PATCH v2 1/3] devicetree: bindings: Document qcom,msm-id and qcom,board-id


On Mar 5, 2015, at 7:59 PM, Olof Johansson <olof@...om.net> wrote:

> On Thu, Mar 5, 2015 at 12:23 PM, Kumar Gala <galak@...eaurora.org> wrote:
>> 
>> On Mar 5, 2015, at 1:42 PM, Kevin Hilman <khilman@...nel.org> wrote:
>> 
>>> Kumar Gala <galak@...eaurora.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@...r.kernel.org>
>>>> Signed-off-by: Kumar Gala <galak@...eaurora.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.

- k
-- 
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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