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Subject: media: ipu-bridge: Change ov2740 link-frequency to 180 MHz
Author: Hans de Goede <hdego...@redhat.com>
Date: Mon Dec 4 13:39:46 2023 +0100
The only known devices that use an ov2740 sensor in combination with
the ipu-bridge code are various Lenovo ThinkPad models, which all
need the link-frequency to be 180 MHz for things to work properly.
The ov2740 driver used to only support 360 MHz link-frequency,
which is why the ipu-bridge entry used 360 MHz, but now the
ov2740 driver has been extended to also support 180 MHz.
The ov2740 is actually used with 360 MHz link-frequency on Chromebooks.
On Chromebooks the camera/sensor fwnode graph is part of the ACPI tables.
The ipu-bridge code is used to dynamically generate the graph when it is
missing, so it is not used on Chromebooks and the ov2740 will keep using
360 MHz link-frequency there as before.
Signed-off-by: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/pci/intel/ipu-bridge.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/drivers/media/pci/intel/ipu-bridge.c
b/drivers/media/pci/intel/ipu-bridge.c
index e38198e259c0..f980e3125a7b 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -53,7 +53,7 @@ static const struct ipu_sensor_config ipu_supported_sensors[]
= {
/* Omnivision ov8856 */
IPU_SENSOR_CONFIG("OVTI8856", 3, 180000000, 360000000, 720000000),
/* Omnivision ov2740 */
- IPU_SENSOR_CONFIG("INT3474", 1, 360000000),
+ IPU_SENSOR_CONFIG("INT3474", 1, 180000000),
/* Hynix hi556 */
IPU_SENSOR_CONFIG("INT3537", 1, 437000000),
/* Omnivision ov13b10 */
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