On Mon, Jun 23, 2025 at 09:32:54AM -0600, Mathieu Poirier wrote: > On Tue, Jun 17, 2025 at 04:34:47PM -0300, Hiago De Franco wrote: > > From: Hiago De Franco <hiago.fra...@toradex.com> > > > > This patch series depends on Ulf's patches that are currently under > > review, "pmdomain: Add generic ->sync_state() support to genpd" [1]. > > Without them, this series is not going to work. > > Please resend this patchset when [1] and the work in patch 1/3 have been > merged.
All right, I will send the v6 with the corrections you mentioned and resend it when the other patches have been merged. Best regards, Hiago. > > Thanks, > Mathieu > > > > > For the i.MX8X and i.MX8 family SoCs, currently when the remotecore is > > started by the bootloader and the M core and A core are in the same > > partition, the driver is not capable to detect the remote core and > > report the correct state of it. > > > > This patch series implement a new function, dev_pm_genpd_is_on(), which > > returns the power status of a given power domain (M core power domains > > IMX_SC_R_M4_0_PID0 and IMX_SC_R_M4_0_MU_1A in this case). If it is > > already powered on, the driver will attach to it. > > > > Finally, the imx_rproc_clk_enable() function was also changed to make it > > return before dev_clk_get() is called, as it currently generates an SCU > > fault reset if the remote core is already running and the kernel tries > > to enable the clock again. These changes are a follow up from a v1 sent > > to imx_rproc [2] and from a reported regression [3]. > > > > [1] > > https://lore.kernel.org/all/20250523134025.75130-1-ulf.hans...@linaro.org/ > > [2] > > https://lore.kernel.org/lkml/20250423155131.101473-1-hiagofra...@gmail.com/ > > [3] https://lore.kernel.org/lkml/20250404141713.ac2ntcsjsf7epdfa@hiago-nb/ > > > > v5: > > - pm_runtime_get_sync() removed in favor of pm_runtime_resume_and_get(), > > checking the return value of it. > > - Added pm_runtime_disable() and pm_runtime_put() to imx_rproc_remove(). > > - Fixed missing "()" in dev_pm_genpd_is_on description. > > - Updated dev_pm_genpd_is_on() function description to be explicit the > > function reflects the current power status of the device and that this > > might change after the function returns, especially if the genpd is > > shared. > > > > v4: > > - https://lore.kernel.org/lkml/20250602131906.25751-1-hiagofra...@gmail.com/ > > > > v3: > > - https://lore.kernel.org/all/20250519171514.61974-1-hiagofra...@gmail.com/ > > > > v2: > > - https://lore.kernel.org/lkml/20250507160056.11876-1-hiagofra...@gmail.com/ > > > > v1: > > - https://lore.kernel.org/lkml/20250505154849.64889-1-hiagofra...@gmail.com/ > > > > Hiago De Franco (3): > > pmdomain: core: introduce dev_pm_genpd_is_on() > > remoteproc: imx_rproc: skip clock enable when M-core is managed by the > > SCU > > remoteproc: imx_rproc: detect and attach to pre-booted remote cores > > > > drivers/pmdomain/core.c | 33 +++++++++++++++++++++++++++ > > drivers/remoteproc/imx_rproc.c | 41 ++++++++++++++++++++++++++++------ > > include/linux/pm_domain.h | 6 +++++ > > 3 files changed, 73 insertions(+), 7 deletions(-) > > > > -- > > 2.39.5 > >
