FROMLIST: drm/bridge: anx7625: Fix register access in low-power mode - #1185
Merged
Salendarsingh Gaud (sgaud-quic) merged 1 commit intoSep 25, 2026
Conversation
The INTERFACE_CHANGE_INT_MASK register was accessed outside the Type-C initialization path added for minimal Type-C support. On platforms without Type-C support, this causes the driver to access the RX-P0 I2C client while the ANX7625 is in its low-power configuration. The access fails during probe and results in errors such as: [drm:i2c_access_workaround.isra.0 [anx7625]] *ERROR* fail to access i2c id=3f :39 [drm:anx7625_i2c_probe [anx7625]] *ERROR* fail to write i2c id=3f :43 Keep the interrupt-mask update within the low-power-mode check block. Link: https://lore.kernel.org/all/20260924-latest_tag-v1-1-7150d373f042@oss.qualcomm.com/ Fixes: f81455b ("drm: bridge: anx7625: implement minimal Type-C support") Reported-by: Salendarsingh Gaud <sgaud@qti.qualcomm.com> Signed-off-by: Arpit Saini <arpit.saini@oss.qualcomm.com>
arpit-dev-geek
requested review from
a team,
Kaushal Kumar (quic-kaushalk),
Rajendra (rrnayak) and
Salendarsingh Gaud (sgaud-quic)
September 24, 2026 12:53
Shiraz Hashim (shashim-quic)
approved these changes
Sep 25, 2026
Test Matrix
|
Test Matrix
|
Test Matrix
|
Test Matrix
|
Test Matrix
|
Salendarsingh Gaud (sgaud-quic)
merged commit Sep 25, 2026
2491129
into
qualcomm-linux:qcom-6.18.y
7 of 9 checks passed
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The INTERFACE_CHANGE_INT_MASK register was accessed outside the Type-C initialization path added for minimal Type-C support.
On platforms without Type-C support, this causes the driver to access the RX-P0 I2C client while the ANX7625 is in its low-power configuration. The access fails during probe and results in errors such as:
[drm:i2c_access_workaround.isra.0 [anx7625]]
ERROR fail to access i2c id=3f :39
[drm:anx7625_i2c_probe [anx7625]] ERROR fail to write i2c id=3f :43
Keep the interrupt-mask update within the low-power-mode check block.
Link: https://lore.kernel.org/all/20260924-latest_tag-v1-1-7150d373f042@oss.qualcomm.com/
Fixes: f81455b ("drm: bridge: anx7625: implement minimal Type-C support")
Reported-by: Salendarsingh Gaud sgaud@qti.qualcomm.com
CRs-Fixed: 4689083
qcom-next PR: qualcomm-linux/kernel-topics#1903