github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-01 19:13:47 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

arm64: dts: qcom: sm8150: Affirm IDR0.CCTW on apps_smmu

Browse Source 
On RPMh-based SoCs, the APPS SMMU advertizes support for cache-coherent
pagetable walk via the IDR0 register. This however is not respected by
the arm-smmu driver unless dma-coherent is set.

Mark the node as dma-coherent to ensure this (and other) implementations
take this coherency into account.

Signed-off-by: Konrad Dybcio <quic_kdybcio@quicinc.com>
Tested-by: Steev Klimaszewski <steev@kali.org> # Thinkpad X13s (sc8280xp)
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on sdm845-rb3
Link: https://lore.kernel.org/r/20240919-topic-apps_smmu_coherent-v1-8-5b3a8662403d@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Konrad Dybcio 2024-09-19 00:57:21 +02:00 committed by Bjorn Andersson
parent 7abe72765d
commit 05bd9923d1
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/boot/dts/qcom/sm8150.dtsi
View File

@ -4296,6 +4296,7 @@ apps_smmu: iommu@15000000 {
<GIC_SPI 407 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 408 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 409 IRQ_TYPE_LEVEL_HIGH>;
dma-coherent;
};
remoteproc_adsp: remoteproc@17300000 {