On 29 July 2016 at 09:56, Lin Huang <hl@xxxxxxxxxxxxxx> wrote: > rk3399 platform have dfi controller can monitor ddr load, > and dcf controller to handle ddr register so we can get the > right ddr frequency and make ddr controller happy work(which > will implement in bl31). So we do ddr frequency scaling with > following flow: > > kernel bl31 > > monitor ddr load > | > | > get_target_rate > | > | pass rate to bl31 > clk_set_rate(ddr) --------------------->run dcf flow > | | > | | > wait dcf interrupt<-------------------trigger dcf interrupt > | > | > return Hi Lin, can you confirm that the hardware isn't capable of raising interrupts when programmable load thresholds are trespassed? From reading the TRM, looks like it should be possible. Or is there any reason to merge now a driver that polls for load stats? Thanks, Tomeu > Lin Huang (6): > clk: rockchip: add new clock-type for the ddrclk > clk: rockchip: rk3399: add SCLK_DDRCLK ID for ddrc > clk: rockchip: rk3399: add ddrc clock support > PM / devfreq: event: support rockchip dfi controller > PM / devfreq: rockchip: add devfreq driver for rk3399 dmc > drm/rockchip: Add dmc notifier in vop driver > > > Heiko Stübner (1): > clk: rockchip: add clock flag parameter when register pll > > Lin Huang (6): > clk: rockchip: add new clock-type for the ddrclk > clk: rockchip: rk3399: add SCLK_DDRCLK ID for ddrc > clk: rockchip: rk3399: add ddrc clock support > PM / devfreq: event: support rockchip dfi controller > PM / devfreq: rockchip: add devfreq driver for rk3399 dmc > drm/rockchip: Add dmc notifier in vop driver > > drivers/clk/rockchip/Makefile | 1 + > drivers/clk/rockchip/clk-ddr.c | 146 +++++++++ > drivers/clk/rockchip/clk-pll.c | 4 +- > drivers/clk/rockchip/clk-rk3399.c | 19 ++ > drivers/clk/rockchip/clk.c | 11 +- > drivers/clk/rockchip/clk.h | 29 +- > drivers/devfreq/Kconfig | 1 + > drivers/devfreq/Makefile | 1 + > drivers/devfreq/event/Kconfig | 7 + > drivers/devfreq/event/Makefile | 1 + > drivers/devfreq/event/rockchip-dfi.c | 253 +++++++++++++++ > drivers/devfreq/rockchip/Kconfig | 8 + > drivers/devfreq/rockchip/Makefile | 1 + > drivers/devfreq/rockchip/rk3399_dmc.c | 473 ++++++++++++++++++++++++++++ > drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 124 +++++++- > include/dt-bindings/clock/rk3399-cru.h | 1 + > include/soc/rockchip/rockchip_sip.h | 27 ++ > 17 files changed, 1098 insertions(+), 9 deletions(-) > create mode 100644 drivers/clk/rockchip/clk-ddr.c > create mode 100644 drivers/devfreq/event/rockchip-dfi.c > create mode 100644 drivers/devfreq/rockchip/Kconfig > create mode 100644 drivers/devfreq/rockchip/Makefile > create mode 100644 drivers/devfreq/rockchip/rk3399_dmc.c > create mode 100644 include/soc/rockchip/rockchip_sip.h > > -- > 1.9.1 > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
