On Tue, Jun 17, 2025 at 04:34:47PM -0300, Hiago De Franco wrote: > From: Hiago De Franco <[email protected]> > > 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. 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/[email protected]/ > [2] > https://lore.kernel.org/lkml/[email protected]/ > [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/[email protected]/ > > v3: > - https://lore.kernel.org/all/[email protected]/ > > v2: > - https://lore.kernel.org/lkml/[email protected]/ > > v1: > - https://lore.kernel.org/lkml/[email protected]/ > > 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 >
