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 is fixed by: https://lore.kernel.org/all/20241005140150.4109700-2-quic_kuldsing@xxxxxxxxxxx/ But above patch doesn't impact building of current patch series, this patch series can build successfully without above patch. Dependency: https://lore.kernel.org/all/20240926-add_initial_support_for_qcs615-v3-0-e37617e91c62@xxxxxxxxxxx/ Changes in v2: - Address the comments on bindings from 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: 0cca97bf23640ff68a6e8a74e9b6659fdc27f48c 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: 760a2b8f2acff7a9683bfe8f2d353f7caa6e5580 prerequisite-patch-id: 54b4dd987711302b083f714c6f230726c7781042 prerequisite-patch-id: 624720e543d7857e46d3ee49b8cea413772deb4c prerequisite-patch-id: 04ca722967256efddc402b7bab94136a5174b0b9 prerequisite-patch-id: ab88a42ec69ad90e8509c9c5b7c6bdd595a7f783 prerequisite-patch-id: 918724fafe43acaa4c4b980bfabe36e9c3212cd1 prerequisite-patch-id: 3bae513ca3da06d6f175502924a1fec6f9424def prerequisite-patch-id: 57afeee80c9aa069ee243f5a5b634702867d20f1 -- 2.17.1
