]> www.infradead.org Git - users/jedix/linux-maple.git/commit
arm64: dts: qcom: sc8280xp: Affirm IDR0.CCTW on apps_smmu
authorKonrad Dybcio <quic_kdybcio@quicinc.com>
Wed, 18 Sep 2024 22:57:17 +0000 (00:57 +0200)
committerBjorn Andersson <andersson@kernel.org>
Sun, 6 Oct 2024 02:52:55 +0000 (21:52 -0500)
commit2b73b83cb82aefb6c907ea91a9977641bbcae683
treef8f2392ce7e06387f441a35e7f49666a6ec17d55
parent57222f077bd05b6ef8c5b2998400122f3c202e51
arm64: dts: qcom: sc8280xp: Affirm IDR0.CCTW on apps_smmu

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-v1-4-5b3a8662403d@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
arch/arm64/boot/dts/qcom/sc8280xp.dtsi