This RFC follows discussions in OpenAMP meeting around a resource manager for the remote processor. Here is a patchset that implements a system resource management. By system resource we speak about resource that is requested to operate a peripheral, used by a remote processor. These resources can introduce potential contention if they are not controlled by one core. In this first patch-set the system resource manager configures and enables the following system resources. - Clocks - GPIOs - Regulators Theses resources are declared in devicetree sub-nodes of the resource manager. A subnode corresponds to one peripheral used by the remote processor. For each peripheral a generic driver can be probed to handle the system resource. Developer can also define his own driver for more complexe use cases. Know limitations: - Assignement of a peripheral is static. Means that peripheral assignement can not switch from one core to another core during runtime. - Configuration of the system resources are also static. No update of a resource configuration during runtime. => Both limitations could be treated adding in a dynamic aspect based on a RPMsg service. TI already implements a solution (which could be easily port on the top of this series): http://git.omapzoom.org/?p=repo/sysbios-rpmsg.git;a=summary Fabien Dessenne (6): remoteproc: add early probed subdevices dt-bindings: remoteproc: add system resource manager (SRM) remoteproc: add system resource manager core remoteproc: add system resource manager device remoteproc: Add posibility to probe a sub device. remoteproc: sti: select srm .../devicetree/bindings/remoteproc/rproc-srm.txt | 45 ++ Documentation/remoteproc.txt | 23 + drivers/remoteproc/Kconfig | 20 + drivers/remoteproc/Makefile | 2 + drivers/remoteproc/remoteproc_core.c | 70 +++- drivers/remoteproc/rproc_srm_core.c | 202 +++++++++ drivers/remoteproc/rproc_srm_dev.c | 462 +++++++++++++++++++++ include/linux/remoteproc.h | 7 + 8 files changed, 820 insertions(+), 11 deletions(-) create mode 100644 Documentation/devicetree/bindings/remoteproc/rproc-srm.txt create mode 100644 drivers/remoteproc/rproc_srm_core.c create mode 100644 drivers/remoteproc/rproc_srm_dev.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-remoteproc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
