On 27 October 2016 at 14:05, Markus Mayer <code@xxxxxxxxxx> wrote: > From: Markus Mayer <mmayer@xxxxxxxxxxxx> > > This series contains the CPUfreq driver for Broadcom SoCs that use "AVS > Firmware" for voltage and frequency scaling. All voltage and frequency > transitions are performed by the firmware and are therefore hidden from > Linux. > > The driver provides a standard CPUfreq interface to other kernel > components and to userland on the one hand and communicates with the > AVS co-processor on the other. > > Communication between the two processors is via shared mailbox > registers and interrupts (ARM -> AVS to tell the firmware that there is > a command to process and AVS -> ARM to tell the driver that a command > finished executing). Viresh, Rafael, are you ready to take this series? Rob gave his Ack for the DT binding. You can pull from [1] if you prefer. The branch already has all the Acks. Thanks, -Markus [1] https://github.com/mmayer/linux/commits/upstream-avs-cpufreq-4.9-v5 > Changes from v4: > - Addressed comments regarding the binding document (see also > https://lkml.org/lkml/2016/10/19/642) > - Added Virsh's Acks > - Rebased on v4.9-rc1 > - Patches sent from non-Broadcom account on purpose to prevent series > from being marked as spam (this is currently happening for some > recipients) > - No changes to any code > > Changes from v3: > - moved code from brcm_avs_cpufreq_exit() into brcm_avs_cpufreq_remove() > - removed brcm_avs_cpufreq_exit() altogether > > Changes from v2: > - removed file Documentation/cpu-freq/brcmstb-avs-cpufreq.txt, instead > adding the text as comment in the driver itself > - wildcard match in MAINTAINERS file (drivers/cpufreq/brcmstb*) > - drivers/cpufreq/Kconfig.arm: have ARM_BRCMSTB_AVS_CPUFREQ default y > for ARCH_BRCMSTB > - fixed naming and Kconfig entry for CONFIG_ARM_BRCMSTB_AVS_CPUFREQ_DEBUG > - reordered and fixed include files > - made sure driver name doesn't exceed size of cpufreq_driver.name > - got rid of device_node pointers in struct private_data; there's no > need for them, as we can call of_node_put() in __map_region() > - don't set driver_data for CPUFREQ_TABLE_END > - have brcm_avs_cpufreq_get() read from the firmware rather than return > policy->cur > - don't update policy->cur in brcm_avs_target_index() > - created new function brcm_avs_prepare_init() to handle compatibility > checks during initialization and moved corresponding code from > brcm_avs_cpufreq_init() to the new function > - brcm_avs_prepare_init() is called from brcm_avs_cpufreq_probe() and > therefore will only be called once, even in the case of an error, > whereas brcm_avs_cpufreq_init() is called for every core if there is > an error > - renamed brcm_avs_cpu_(init|exit) to brcm_avs_cpufreq_(init|exit) > - added platform_set_drvdata(pdev, NULL) upon deregistration > - fixed various style complaints by checkpatch.pl --strict > - fixed other style issues > - updated and improved some comments > - added Viresh's Acks to patches 1/3 and 3/3 > > Changes from v1: > - renamed binding document > - rewrote the introduction of the binding document > - created a new driver documentation file that contains Linux specific > information that was previously part of the binding document > - renamed the driver (and related config options) to include a reference > to "STB", since this implementation is primarily intended for use on > set-top boxes > - improved comments > - updated function __map_region() > - updated struct private_data > - added code to unmap memory regions in the error and exit paths > - added new sysfs property to report frequency directly from the > co-processor register > > Markus Mayer (3): > dt: cpufreq: brcm: New binding document for brcmstb-avs-cpufreq > cpufreq: brcmstb-avs-cpufreq: AVS CPUfreq driver for Broadcom STB SoCs > cpufreq: brcmstb-avs-cpufreq: add debugfs support > > .../bindings/cpufreq/brcm,stb-avs-cpu-freq.txt | 78 ++ > MAINTAINERS | 8 + > drivers/cpufreq/Kconfig.arm | 21 + > drivers/cpufreq/Makefile | 1 + > drivers/cpufreq/brcmstb-avs-cpufreq.c | 1057 ++++++++++++++++++++ > 5 files changed, 1165 insertions(+) > create mode 100644 Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt > create mode 100644 drivers/cpufreq/brcmstb-avs-cpufreq.c > > -- > 2.7.4 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
