This patchset depends on [1]. After some trial and error and after enabling QCOM_RMTFS_MEM (mea culpa, it probably was not enabled back in November, when I was testing these patches), the modem stopped crashing. The MSS boots fine on DB820c, registers services, etc. [1]: https://patchwork.kernel.org/project/linux-arm-msm/list/?series=553085&state=%2A&archive=both Dmitry Baryshkov (2): remoteproc: qcom: q6v5-mss: add powerdomains to MSM8996 config arm64: dts: qcom: apq8096-db820c: enable MSS node arch/arm64/boot/dts/qcom/apq8096-db820c.dts | 6 ++++++ drivers/remoteproc/qcom_q6v5_mss.c | 5 +++++ 2 files changed, 11 insertions(+) base-commit: f443e374ae131c168a065ea1748feac6b2e76613 prerequisite-patch-id: cb78922831b08e04445919773f35c27c1842c7ed prerequisite-patch-id: be27f629f9ac70529a170399ea8c2a01c1f48913 prerequisite-patch-id: f248d2296b3c450db3db46ecaa4568d2f5296dce prerequisite-patch-id: c3d6a03b9e5e058caa50ce3c916800c594b76248 -- 2.35.1