arm64: dts: qcom: kodiak-el2: remove wpss iommus, add wifi-firmware i…#756
Open
mukeshojha-linux wants to merge 1 commit into
Open
arm64: dts: qcom: kodiak-el2: remove wpss iommus, add wifi-firmware i…#756mukeshojha-linux wants to merge 1 commit into
mukeshojha-linux wants to merge 1 commit into
Conversation
…ommus The WPSS does not have dedicated firmware IOMMU context banks that Linux needs to manage. The SIDs in the WPSS range are in fact used for WCN6750 Wi-Fi firmware DMA operations (MSA firmware region and Copy Engine region) once Wi-Fi is brought up. The ath11k driver looks for a "wifi-firmware" child node under the Wi-Fi device and creates a dedicated platform device to map these firmware DMA regions through the IOMMU. This matches the pattern established in sc7280-chrome-common.dtsi where iommus are declared on the wifi-firmware child node under &wifi, not on remoteproc_wpss itself. Remove iommu entries for wpss from kodiak-el2 overlay file. Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
mukeshojha-linux
requested review from
a team,
quic-tingweiz,
shashim-quic and
yijiyang
|
Merge Check Failed: No CR Numbers Found Error: No Change Request numbers were found. Please add Change Request numbers to your pull request description in the format CRs-Fixed: 12345 or link GitHub issues that are associated with Change Requests. |
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
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
…ommus
The WPSS does not have dedicated firmware IOMMU context banks that Linux needs to manage. The SIDs in the WPSS range are in fact used for WCN6750 Wi-Fi firmware DMA operations (MSA firmware region and Copy Engine region) once Wi-Fi is brought up. The ath11k driver looks for a "wifi-firmware" child node under the Wi-Fi device and creates a dedicated platform device to map these firmware DMA regions through the IOMMU. This matches the pattern established in sc7280-chrome-common.dtsi where iommus are declared on the wifi-firmware child node under &wifi, not on remoteproc_wpss itself.
Remove iommu entries for wpss from kodiak-el2 overlay file.