Hi All, The following is a revised version (v3) of the series that adds the IPC-only mode support for the TI K3 R5F and DSP (C66x and C71x) remoteprocs covering AM65x, J721E, J7200, AM64x and the recently added J721S2 SoCs. Patches are on top of 5.17-rc2 (since rproc-next is baselined on rc2). Please see the v1 cover-letter [1] for the design details of the 'IPC-only' mode functionality. The following are the main changes w.r.t v2 [2], please see the individual patches for the exact deltas: - The first patch in v2 "remoteproc: Add support for detach-only during shutdown" is dropped - Added a new "remoteproc: Change rproc_shutdown() to return a status" patch as the first patch in v3. - Adjusted the K3 R5F and DSP remoteproc drivers to invoke rproc_detach() in the case of IPC-only mode during teardown The following is a summary of patches in v3: - Patch 1 enhances the remoteproc core to return a status for rproc_shutdown() that is in turn returned in the sysfs and cdev interfaces. This replaces the flag-based logic in v2 and is used to return an error for K3 SoCs that don't supply a .stop() ops in IPC-only mode. - Patches 2 and 4 refactor the mailbox request code out of start in the K3 R5F and DSP remoteproc drivers for reuse in the new attach callbacks. - Patch 3 adds the IPC-only mode support for R5F. - Patch 5 adds the IPC-only mode support for both K3 C66x and C71x DSPs. I have re-verified the different combinations on J721E, J7200 and AM65x SoCs. AM64x currently lacks early-boot support, but the logic is ready for Single-CPU and Split modes that are specific to AM64x SoCs. J721S2 doesn't have either early-boot support yet, and the dts nodes are also not added yet, but I have tested locally using additional patches. regards Suman [1] https://patchwork.kernel.org/project/linux-remoteproc/cover/20210522000309.26134-1-s-anna@xxxxxx/ [2] https://patchwork.kernel.org/project/linux-remoteproc/cover/20210723220248.6554-1-s-anna@xxxxxx/ Suman Anna (5): remoteproc: Change rproc_shutdown() to return a status remoteproc: k3-r5: Refactor mbox request code in start remoteproc: k3-r5: Add support for IPC-only mode for all R5Fs remoteproc: k3-dsp: Refactor mbox request code in start remoteproc: k3-dsp: Add support for IPC-only mode for all K3 DSPs Documentation/staging/remoteproc.rst | 3 +- drivers/remoteproc/remoteproc_cdev.c | 2 +- drivers/remoteproc/remoteproc_core.c | 9 +- drivers/remoteproc/remoteproc_sysfs.c | 2 +- drivers/remoteproc/ti_k3_dsp_remoteproc.c | 208 ++++++++++++---- drivers/remoteproc/ti_k3_r5_remoteproc.c | 287 +++++++++++++++++++--- include/linux/remoteproc.h | 2 +- 7 files changed, 431 insertions(+), 82 deletions(-) -- 2.32.0
