Re: [PATCH 0/3] of: add update device node status via cmdline feature

From: Grant Likely
Date: Thu Aug 15 2013 - 08:46:39 EST

On Thu, Aug 15, 2013 at 1:37 PM, Rob Herring <robherring2@xxxxxxxxx> wrote:
> On 08/15/2013 05:55 AM, Dong Aisheng wrote:
>> We meet some boards having a lot of pin conflicts between different devices,
>> only one of them can be enabled to run at one time.
>> e.g. imx6q sabreauto board, i2c, spi, weim, flexcan, uart and etc involved
>> with pin conflict.
>> Instead of changing dts manually or adding a lot dts files according to
>> different device availability, we provide feature to dynamically update the
>> device node status via command line, then those devices involved with
>> pin conflict can be enabled or disabled dynamically.
>> It's conveniently to use and can save a lot dts board files, also can
>> permenantly fix the pin conflicts issue.
> This doesn't scale either with updating of lots devices or when the next
> person comes along and wants to edit another property.
> This is something u-boot is perfectly capable of handling and updating
> status is something lots of boards already do.


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