This is a note to let you know that I've just added the patch titled
drm/amd/display: Increase num voltage states to 40
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-increase-num-voltage-states-to-40.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 281fed68e1e6d9e6e234dc7bccbb8296cf8b07d4
Author: Alvin Lee <alvin.lee2@xxxxxxx>
Date: Wed Nov 8 17:16:28 2023 -0500
drm/amd/display: Increase num voltage states to 40
[ Upstream commit 67e38874b85b8df7b23d29f78ac3d7ecccd9519d ]
[Description]
If during driver init stage there are greater than 20
intermediary voltage states while constructing the SOC
BB we could hit issues because we will index outside of the
clock_limits array and start overwriting data. Increase the
total number of states to 40 to avoid this issue.
Cc: stable@xxxxxxxxxxxxxxx # 6.1+
Reviewed-by: Samson Tam <samson.tam@xxxxxxx>
Acked-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Signed-off-by: Alvin Lee <alvin.lee2@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dc_features.h b/drivers/gpu/drm/amd/display/dc/dml/dc_features.h
index 2cbdd75429ffd..6e669a2c5b2d4 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dc_features.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/dc_features.h
@@ -36,7 +36,7 @@
* Define the maximum amount of states supported by the ASIC. Every ASIC has a
* specific number of states; this macro defines the maximum number of states.
*/
-#define DC__VOLTAGE_STATES 20
+#define DC__VOLTAGE_STATES 40
#define DC__NUM_DPP__4 1
#define DC__NUM_DPP__0_PRESENT 1
#define DC__NUM_DPP__1_PRESENT 1
