Douglas Anderson 60aadea57e clk: rockchip: Set "ignore unused" for PMU M0 clocks on rk3399 ... The PMU Cortex M0 on rk3399 is intended to be used for things like DDRFreq transitions, suspend/resume, and other things that are the purview of ARM Trusted Firmware and not the kernel. As such, the kernel shouldn't be messing with the clocks. Add CLK_IGNORE_UNUSED to these clocks. Without this change, the following was observed on a Chromebook with a rk3399 (using not-yet-upstream ARM Trusted Firmware code and not-yet-upstream kernel code based on kernel-4.4): 1. We init the clock framework. 2. We start up "DDRFreq", which causes ATF to occasionally fire up the M0 for transitions. Each time ATF fires up the M0 it will turn on these clocks and each time it is done it will turn them off. 3. We finally get to the the part of the kernel that calls clk_disable_unused() and we disables the clocks. You can see the race above. Basically everything is fine as long as ARM Trusted Firmware isn't starting up the M0 at exactly the same time that the kernel is disabling unused clocks. ...but if the race happens then we go boom. Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de>		2017-03-06 04:45:45 +01:00
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clk-cpu.c	clk: rockchip: validity should be checked prior to cpu clock rate change	2016-11-14 12:20:53 +01:00
clk-ddr.c	clk: rockchip: don't return NULL when failing to register ddrclk branch	2016-10-16 02:39:58 +02:00
clk-inverter.c	clk: rockchip: don't return NULL when registering inverter fails	2016-02-15 23:35:20 +01:00
clk-mmc-phase.c	clk: rockchip: Revert "clk: rockchip: reset init state before mmc card initialization"	2016-05-30 09:40:23 +02:00
clk-muxgrf.c	clk: rockchip: add a clock-type for muxes based in the grf	2017-01-02 14:24:57 +01:00
clk-pll.c	clk: rockchip: add new pll-type for rk3328	2017-01-02 14:24:57 +01:00
clk-rk1108.c	clk: rockchip: add clock controller for rk1108	2016-11-16 12:37:37 +01:00
clk-rk3036.c	clk: rockchip: release io resource when failing to init clk	2016-03-27 13:03:35 +02:00
clk-rk3188.c	clk: rockchip: use clock ids for memory controller parts on rk3066/rk3188	2017-01-13 17:32:55 +01:00
clk-rk3228.c	clk: rockchip: export rk3228 MAC clocks	2016-07-01 01:50:11 +02:00
clk-rk3288.c	clk: rockchip: rk3288: make all niu clocks critical	2017-01-23 00:58:45 +01:00
clk-rk3328.c	clk: rockchip: add clock controller for rk3328	2017-01-05 13:36:07 +01:00
clk-rk3368.c	clk: rockchip: release io resource when failing to init clk	2016-03-27 13:03:35 +02:00
clk-rk3399.c	clk: rockchip: Set "ignore unused" for PMU M0 clocks on rk3399	2017-03-06 04:45:45 +01:00
clk-rockchip.c	clk: rockchip: handle of_iomap failures in legacy clock driver	2016-08-23 18:00:25 +02:00
clk.c	clk: rockchip: Remove useless init of "grf" to -EPROBE_DEFER	2017-01-06 18:08:16 +01:00
clk.h	clk: rockchip: add clock controller for rk3328	2017-01-05 13:36:07 +01:00
Makefile	clk: rockchip: add clock controller for rk3328	2017-01-05 13:36:07 +01:00
softrst.c	clk: rockchip: Make reset_control_ops const	2016-03-29 16:29:46 -07:00