Enable APPS SMMU function on QCS615 platform. APPS SMMU is required for address translation in devices including Ethernet/UFS/USB and so on. Add the SCM node for SMMU probing normally. SMMU driver probe will check qcom_scm ready or not, without SCM node, SMMU driver probe will defer. The dmesg log without SCM node: platform 15000000.iommu: deferred probe pending: arm-smmu: qcom_scm not ready With the SCM node, SMMU can probe normally, but SCM driver still fails to probe because of one SCM bug: qcom_scm firmware:scm: error (____ptrval____): Failed to enable the TrustZone memory allocator qcom_scm firmware:scm: probe with driver qcom_scm failed with error 4 The above SCM bug has been fixed and applied: https://lore.kernel.org/all/172965696408.224417.2033308332604008573.b4-ty@xxxxxxxxxx/#t But above patch doesn't impact building of current patch series which can build successfully without above patch. This patch series depends on below patch series: https://lore.kernel.org/linux-arm-msm/20241022-add_initial_support_for_qcs615-v4-0-0a551c6dd342@xxxxxxxxxxx/ Changes in v3: - Align the interrupts of the APPS SMMU node suggested by Konrad. - Add the Acked-by tag in the commit message of SCM bindings patch. - Update the dependency link, SCM bug fix link and base-commit in cover letter. - Link to v2: https://lore.kernel.org/linux-arm-msm/20241015081603.30643-1-quic_qqzhou@xxxxxxxxxxx/ Changes in v2: - Add the compatible "qcom,qcs615-smmu-500" into no-clocks list for arm,smmu.yaml suggested by Krzysztof. - Improve the commit messages and cover letter. - Link to v1: https://lore.kernel.org/all/20241011063112.19087-1-quic_qqzhou@xxxxxxxxxxx/ Qingqing Zhou (4): dt-bindings: firmware: qcom,scm: document QCS615 SCM dt-bindings: arm-smmu: document QCS615 APPS SMMU arm64: dts: qcom: qcs615: add the SCM node arm64: dts: qcom: qcs615: add the APPS SMMU node .../bindings/firmware/qcom,scm.yaml | 1 + .../devicetree/bindings/iommu/arm,smmu.yaml | 2 + arch/arm64/boot/dts/qcom/qcs615.dtsi | 81 +++++++++++++++++++ 3 files changed, 84 insertions(+) base-commit: 7436324ebd147598f940dde1335b7979dbccc339 prerequisite-patch-id: 3a76212d3a3e930d771312ff9349f87aee5c55d5 prerequisite-patch-id: 8a2454d5e07e56a6dd03f762f498051065635d85 prerequisite-patch-id: 46cdc5640598b60d2f5449af444d6d4e479c00b8 prerequisite-patch-id: 050d1dd8cc9397618e570e6de2d81d0c32c10d7a prerequisite-patch-id: cd9fc0a399ab430e293764d0911a38109664ca91 prerequisite-patch-id: 07f2c7378c7bbd560f26b61785b6814270647f1b prerequisite-patch-id: f9680e3c90d8f05babbcadd7b7f5174f484a8275 prerequisite-patch-id: f78398623b7f08ae1183a4e637045a081bc93ec8 prerequisite-patch-id: 54b4dd987711302b083f714c6f230726c7781042 prerequisite-patch-id: 624720e543d7857e46d3ee49b8cea413772deb4c prerequisite-patch-id: 04ca722967256efddc402b7bab94136a5174b0b9 prerequisite-patch-id: ab88a42ec69ad90e8509c9c5b7c6bdd595a7f783 prerequisite-patch-id: 918724fafe43acaa4c4b980bfabe36e9c3212cd1 prerequisite-patch-id: 203a45a2f2a8c636ad88b6c0d4868721dc34633d prerequisite-patch-id: fc1cfec4ecd56e669c161c4d2c3797fc0abff0ae -- 2.17.1
