From: Markus Burri <markus.burri@mt.com>
To: linux-kernel@vger.kernel.org
Cc: Markus Burri <markus.burri@mt.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Marek Vasut <marek.vasut@gmail.com>,
linux-input@vger.kernel.org, devicetree@vger.kernel.org,
Manuel Traut <manuel.traut@mt.com>
Subject: [PATCH v4 5/7] dt-bindings: input: matrix_keypad - add settle time after enable all columns
Date: Wed, 8 Jan 2025 14:45:05 +0100 [thread overview]
Message-ID: <20250108134507.257268-6-markus.burri@mt.com> (raw)
In-Reply-To: <20250108134507.257268-1-markus.burri@mt.com>
Matrix_keypad with high capacity need a longer settle time after enable
all columns.
Add optional property to specify the settle time
Signed-off-by: Markus Burri <markus.burri@mt.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
.../devicetree/bindings/input/gpio-matrix-keypad.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
index 0555c1e..408474e 100644
--- a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
+++ b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
@@ -57,6 +57,12 @@ properties:
before we can scan keypad after activating column gpio.
default: 0
+ all-cols-on-delay-us:
+ description:
+ Delay, measured in microseconds, that is needed
+ after activating all column gpios.
+ default: 0
+
drive-inactive-cols:
type: boolean
description:
--
2.39.5
next prev parent reply other threads:[~2025-01-08 13:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-08 13:45 [PATCH v4 0/7] Input: matrix-keypad: Various performance improvements Markus Burri
2025-01-08 13:45 ` [PATCH v4 1/7] Input: matrix_keypad - use fsleep for variable delay duration Markus Burri
2025-01-08 13:45 ` [PATCH v4 2/7] Input: matrix_keypad - add function for reading row state Markus Burri
2025-01-08 13:45 ` [PATCH v4 3/7] dt-bindings: input: matrix_keypad - convert to YAML Markus Burri
2025-01-08 13:45 ` [PATCH v4 4/7] dt-bindings: input: matrix_keypad - add missing property Markus Burri
2025-01-08 13:45 ` Markus Burri [this message]
2025-01-08 13:45 ` [PATCH v4 6/7] Input: matrix_keypad - add settle time after enable all columns Markus Burri
2025-01-08 13:45 ` [PATCH v4 7/7] Input: matrix_keypad - detect change during scan Markus Burri
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