On 11/26/2018 1:39 PM, Viresh Kumar wrote:
Hi, This series adds performance state propagation support in genpd core. The propagation happens from the sub-domains to their masters. More details can be found in the individual commit logs. This is tested on hikey960 by faking power domains in such a way that the CPU devices have two power domains and both of them have the same master domain. The CPU device, as well as its power domains have "required-opps" property set and the performance requirement from the CPU eventually configures all the domains (2 sub-domains and 1 master).
I validated this using the rpmh powerdomain driver [1] where I had to model a relationship across cx and mx powerdomains, so that mx is always >= cx. Seems to work as expected, I will respin the rpmh powerdomain patches soon (Though its awaiting Rob's review/ack for the corner bindings) Tested-by: Rajendra Nayak <[email protected]> [1] https://patchwork.ozlabs.org/cover/935289/
Based on opp/linux-next branch (which is 4.20-rc1 + multiple-power-domain-support-in-opp-core + some OPP fixes). v1->V2: - First patch (1/5) is new and an improvement to earlier stuff. - Move genpd_status_on() check to _genpd_reeval_performance_state() from _genpd_set_performance_state(). - Improve dev_pm_opp_xlate_performance_state() to handle 1:1 pstate mapping between genpd and its master and also to fix a problem while finding the dst_table. - Handle pstate=0 case properly. -- viresh Viresh Kumar (5): OPP: Improve _find_table_of_opp_np() OPP: Add dev_pm_opp_xlate_performance_state() helper PM / Domains: Save OPP table pointer in genpd PM / Domains: Factorize dev_pm_genpd_set_performance_state() PM / Domains: Propagate performance state updates drivers/base/power/domain.c | 211 +++++++++++++++++++++++++++--------- drivers/opp/core.c | 59 ++++++++++ drivers/opp/of.c | 14 ++- include/linux/pm_domain.h | 6 + include/linux/pm_opp.h | 7 ++ 5 files changed, 244 insertions(+), 53 deletions(-)
