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-rw-r--r--Documentation/driver-api/gpio/board.rst1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/driver-api/gpio/board.rst b/Documentation/driver-api/gpio/board.rst
index a0f294e2e250..b37f3f7b8926 100644
--- a/Documentation/driver-api/gpio/board.rst
+++ b/Documentation/driver-api/gpio/board.rst
@@ -204,6 +204,7 @@ between a caller and a respective .get/set_multiple() callback of a GPIO chip.
In order to qualify for fast bitmap processing, the array must meet the
following requirements:
+
- pin hardware number of array member 0 must also be 0,
- pin hardware numbers of consecutive array members which belong to the same
chip as member 0 does must also match their array indexes.