This series enables the suspend to ram with R5F remote processors on TI K3 platform. The 1st patch is actually a fix, independent from the others The 2nd patch introduces the suspend/resume handlers. On suspend, the running rprocs will be stopped (or detached) and then re-loaded in resume. The logic behind this is: - shutdown the cores that Linux started to save power in suspend. - detach the cores that were started before Linux. Then, the 3rd and 4th patches introduce the graceful shutdown of remote procs. This will give them a chance to release resources and shut down in a civilized manner. Without this series, the suspend fails with: omap-mailbox 31f81000.mailbox: fifo 1 has unexpected unread messages omap-mailbox 31f81000.mailbox: PM: dpm_run_callback(): platform_pm_suspend returns -16 omap-mailbox 31f81000.mailbox: PM: platform_pm_suspend returned -16 after 16328 usecs omap-mailbox 31f81000.mailbox: PM: failed to suspend: error -16 Patches 2 and 4 are based on work from Hari Nagalla <hnagalla@xxxxxx>. @Hari, please feel free to add your Co-developed-by:/Signed-off-by: Tested on J7200X SoM Series is based on v6.10-rc4 Richard Genoud (4): remoteproc: k3-r5: Fix IPC-only mode detection remoteproc: k3-r5: Introduce PM suspend/resume handlers remoteproc: k3-r5: k3_r5_rproc_stop: code reorder remoteproc: k3-r5: support for graceful stop of remote cores drivers/remoteproc/omap_remoteproc.h | 9 +- drivers/remoteproc/ti_k3_r5_remoteproc.c | 196 +++++++++++++++++++++-- 2 files changed, 188 insertions(+), 17 deletions(-)
