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-rw-r--r--doc/develop/qconfig.rst14
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/develop/qconfig.rst b/doc/develop/qconfig.rst
index 8efb1eb268..123779eab1 100644
--- a/doc/develop/qconfig.rst
+++ b/doc/develop/qconfig.rst
@@ -85,6 +85,20 @@ example, to find boards which enabled CONFIG_SCSI but not CONFIG_BLK::
3 matches
pg_wcom_seli8_defconfig highbank_defconfig pg_wcom_expu1_defconfig
+It is also possible to search for particular values. For example, this finds all
+boards with an empty string for `CONFIG_DEFAULT_FDT_FILE`::
+
+ ./tools/qconfig.py -f DEFAULT_FDT_FILE=\"\"
+ 1092 matches
+ ...
+
+This finds boards which have a value for SYS_MAXARGS other than 64::
+
+ ./tools/qconfig.py -f ~SYS_MAXARGS=64
+ cfg CONFIG_SYS_MAXARGS
+ 281 matches
+ ...
+
Finding implied CONFIGs
-----------------------