On Fri, 21 Jun 2024 at 09:01, Richard Genoud <richard.genoud@xxxxxxxxxxx> wrote: > > 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(-) > Nishanth, Vignesh, Hari and Andrew - I will wait for you guys to review this patch before moving forward. Thanks, Mathieu
