Groups > linux.kernel > #1621967

4.11-rc6 and OF_DYNAMIC

From	Tim Sander <tim@krieglstein.org>
Newsgroups	linux.kernel
Subject	4.11-rc6 and OF_DYNAMIC
Date	2017-04-12 12:10 +0200
Message-ID	<tvnnP-3bj-9@gated-at.bofh.it> (permalink)
Organization	Sander and Lightning

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Hi

I have been testing the 4.11-rc6 kernel on Intel(ex Altera) Arm SOC Cyclone
with dynamic Firmware loading. As i didn't know how to trigger dynamic
loading from userspace i also applied the following patch:

OF: DT-Overlay configfs interface
https://github.com/raspberrypi/linux/commit/8f1079750ce2fce4c4c2b4f8759ea57c8fb167d3

Now i got the loading of the devicetree overlay working :-)... but only if i enable
OF_UNITTEST. I find this a little strange especially as it slows boot time.
I also tried adding:
	select OF_DYNAMIC
to my OF_CONFIGFS patch but this didn't help. Also patching away "if OF_UNITTEST" 
 config OF_DYNAMIC
-       bool "Support for dynamic device trees" if OF_UNITTEST
+       bool "Support for dynamic device trees"
didn't help?

Besides these nitpicks i am really happy to see this in mainline as it really makes working with 
dynamic fpga based hardware much cleaner!

Best regards
Tim

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4.11-rc6 and OF_DYNAMIC Tim Sander <tim@krieglstein.org> - 2017-04-12 12:10 +0200

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