[3/4] ipa: rpi: Update black level tuning for IMX662
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Message ID 20260803123012.10175-4-david.plowman@raspberrypi.com
State New
Headers show
Series
  • Black level and other fixes for IMX662
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Commit Message

David Plowman Aug. 3, 2026, 12:07 p.m. UTC 
At very high gains, the measured black level increases noticeably
from the nominal value of 3200.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
---
 src/ipa/rpi/pisp/data/imx662.json | 11 ++++++++++-
 src/ipa/rpi/vc4/data/imx662.json  | 11 ++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

Patch
diff mbox series 

diff --git a/src/ipa/rpi/pisp/data/imx662.json b/src/ipa/rpi/pisp/data/imx662.json
index b146d6b59..1aa5cf533 100644
--- a/src/ipa/rpi/pisp/data/imx662.json
+++ b/src/ipa/rpi/pisp/data/imx662.json
@@ -5,7 +5,16 @@ 
         {
             "rpi.black_level":
             {
-                "black_level": 3200
+                "black_level_func":
+                [
+                    1.0, 3200,
+                    192.0, 3200,
+                    256.0, 3245,
+                    320.0, 3331,
+                    384.0, 3443,
+                    480.0, 3606,
+                    512.0, 3623
+                ]
             }
         },
         {
diff --git a/src/ipa/rpi/vc4/data/imx662.json b/src/ipa/rpi/vc4/data/imx662.json
index cec937d62..dc28b53c4 100644
--- a/src/ipa/rpi/vc4/data/imx662.json
+++ b/src/ipa/rpi/vc4/data/imx662.json
@@ -5,7 +5,16 @@ 
         {
             "rpi.black_level":
             {
-                "black_level": 3200
+                "black_level_func":
+                [
+                    1.0, 3200,
+                    192.0, 3200,
+                    256.0, 3245,
+                    320.0, 3331,
+                    384.0, 3443,
+                    480.0, 3606,
+                    512.0, 3623
+                ]
             }
         },
         {