linux-kernel - [PATCH 7/9] of: make OF_DYNAMIC selectable independently of OF

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Message-Id: <20211007000954.30621-8-zev@bewilderbeest.net>
Date:   Wed,  6 Oct 2021 17:09:52 -0700
From:   Zev Weiss <zev@...ilderbeest.net>
To:     openbmc@...ts.ozlabs.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jeremy Kerr <jk@...econstruct.com.au>,
        Joel Stanley <joel@....id.au>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Zev Weiss <zev@...ilderbeest.net>,
        Frank Rowand <frowand.list@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 7/9] of: make OF_DYNAMIC selectable independently of OF_UNITTEST

The writable status sysfs file enabled by the 'dynamic' DT property
requires CONFIG_OF_DYNAMIC to be useful, but that shouldn't require
dragging in CONFIG_OF_UNITTEST as well.

Signed-off-by: Zev Weiss <zev@...ilderbeest.net>
---
 drivers/of/Kconfig | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 3dfeae8912df..8e0ba87db030 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -55,12 +55,14 @@ config OF_KOBJ
 # Hardly any platforms need this.  It is safe to select, but only do so if you
 # need it.
 config OF_DYNAMIC
-	bool "Support for dynamic device trees" if OF_UNITTEST
+	bool "Support for dynamic device trees"
 	select OF_KOBJ
 	help
 	  On some platforms, the device tree can be manipulated at runtime.
-	  While this option is selected automatically on such platforms, you
-	  can enable it manually to improve device tree unit test coverage.
+	  With this option enabled, device tree nodes that are marked with
+	  the "dynamic" property can have their status toggled between
+	  "okay" and "reserved" via sysfs.  This can also be enabled to
+	  increase test coverage with CONFIG_OF_UNITTEST if desired.
 
 config OF_ADDRESS
 	def_bool y
-- 
2.33.0