From: Mathis Foerst <mathis.foerst@mt.com>
To: linux-kernel@vger.kernel.org
Cc: Mathis Foerst <mathis.foerst@mt.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
linux-media@vger.kernel.org, devicetree@vger.kernel.org,
manuel.traut@mt.com, mathis.foerst@zuehlke.com
Subject: [PATCH v3 1/6] media: dt-bindings: mt9m114: Add onnn,slew-rate DT-binding
Date: Wed, 5 Mar 2025 11:14:48 +0100 [thread overview]
Message-ID: <20250305101453.708270-2-mathis.foerst@mt.com> (raw)
In-Reply-To: <20250305101453.708270-1-mathis.foerst@mt.com>
The MT9M114 supports the different slew rates (0 to 7) on the output pads.
At the moment, this is hardcoded to 7 (the fastest rate).
The user might want to change this values due to EMC requirements.
Add the 'onnn,slew-rate' property to the MT9M114 DT-bindings for selecting
the desired slew rate.
Signed-off-by: Mathis Foerst <mathis.foerst@mt.com>
---
.../devicetree/bindings/media/i2c/onnn,mt9m114.yaml | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml b/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml
index f6b87892068a..c184bc04b743 100644
--- a/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml
@@ -70,6 +70,15 @@ properties:
- bus-type
- link-frequencies
+ onnn,slew-rate:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Slew rate ot the output pads DOUT[7:0], LINE_VALID, FRAME_VALID and
+ PIXCLK. Higher values imply steeper voltage-flanks on the pads.
+ minimum: 0
+ maximum: 7
+ default: 7
+
required:
- compatible
- reg
--
2.34.1
next prev parent reply other threads:[~2025-03-05 10:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-05 10:14 [PATCH v3 0/6] MT9M114 driver bugfix and improvements Mathis Foerst
2025-03-05 10:14 ` Mathis Foerst [this message]
2025-03-05 13:08 ` [PATCH v3 1/6] media: dt-bindings: mt9m114: Add onnn,slew-rate DT-binding Rob Herring
2025-03-07 9:41 ` Mathis Foerst
2025-03-05 10:14 ` [PATCH v3 2/6] media: mt9m114: Bypass PLL if required Mathis Foerst
2025-03-05 10:14 ` [PATCH v3 3/6] media: mt9m114: Factor out mt9m114_configure_pa Mathis Foerst
2025-03-05 10:14 ` [PATCH v3 4/6] media: mt9m114: Allow set_selection while streaming Mathis Foerst
2025-03-05 10:14 ` [PATCH v3 5/6] media: mt9m114: Fix deadlock in get_frame_interval/set_frame_interval Mathis Foerst
2025-03-05 10:14 ` [PATCH v3 6/6] media: mt9m114: Set pad-slew-rate Mathis Foerst
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