From: Lokanadha M R <lokanadha.r@oss.qualcomm.com>
To: Rob Clark <robin.clark@oss.qualcomm.com>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <joro@8bytes.org>
Cc: iommu@lists.linux.dev, linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Lokanadha M R <lokanadha.r@oss.qualcomm.com>
Subject: [PATCH] iommu/arm-smmu-qcom: Add glymur MDSS to ACTLR client table
Date: Tue, 28 Apr 2026 15:13:50 +0530 [thread overview]
Message-ID: <20260428-add_glymur_mdss_compatible-v1-1-8416df5a26f4@oss.qualcomm.com> (raw)
Add qcom,glymur-mdss to the qcom_smmu_actlr_client_of_match[]
table to configure the SMMU-500 context bank for the display
subsystem (MDSS) on the Glymur platform.
The settings disable the next-page prefetcher while keeping
macro TLB caching enabled. Without this entry,
qcom_smmu_set_actlr_dev() finds no match for the glymur MDSS
device and leaves the context bank ACTLR at its reset value.
Signed-off-by: Lokanadha M R <lokanadha.r@oss.qualcomm.com>
---
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index edd41b5a3b6a..6df48499a4b2 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -41,6 +41,8 @@ static const struct of_device_id qcom_smmu_actlr_client_of_match[] = {
.data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
{ .compatible = "qcom,fastrpc",
.data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
+ { .compatible = "qcom,glymur-mdss",
+ .data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
{ .compatible = "qcom,qcm2290-mdss",
.data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
{ .compatible = "qcom,sa8775p-mdss",
---
base-commit: 7080e32d3f09d8688c4a87d81bdcc71f7f606b16
change-id: 20260428-add_glymur_mdss_compatible-44f5b2837498
Best regards,
--
Lokanadha M R <lokanadha.r@oss.qualcomm.com>
next reply other threads:[~2026-04-28 9:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-28 9:43 Lokanadha M R [this message]
2026-04-28 10:26 ` [PATCH] iommu/arm-smmu-qcom: Add glymur MDSS to ACTLR client table Dmitry Baryshkov
2026-05-05 10:54 ` Pankaj Patil
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260428-add_glymur_mdss_compatible-v1-1-8416df5a26f4@oss.qualcomm.com \
--to=lokanadha.r@oss.qualcomm.com \
--cc=iommu@lists.linux.dev \
--cc=joro@8bytes.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robin.clark@oss.qualcomm.com \
--cc=robin.murphy@arm.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox