Quoting Michael Turquette (2015-12-04 16:46:28) > Heiko Stübner wrote: > > Hi Mike, > > > > Am Freitag, 7. August 2015, 12:09:27 schrieb Michael Turquette: > > > This is an alternative solution to Lee's "clk: Provide support for > > > always-on clocks" series[0]. > > > > > > The first two patches introduce run-time checks to ensure that clock > > > consumer drivers are respecting the clk.h api. The former patch checks > > > for prepare and enable imbalances. The latter checks for calls to > > > clk_put without first disabling and unpreparing the clk. > > > > > > The third patch introduces a new flag, CLK_ENABLE_HAND_OFF, which > > > prepares and enables a clk at registration-time. The reference counts > > > (prepare & enable) are transferred to the first clock consumer driver > > > that clk_get's the clk with this flag set AND calls clk_prepare or > > > clk_enable. > > > > > > The net result is that a clock with this flag set will be enabled at > > > boot and neither the clk_disable_unused garbage collector or the > > > "sibling clock disables a shared parent" scenario will cause the flagged > > > clock to be disabled. The first driver to come along and explicitly > > > claim, prepare and enable this clock will inherit those reference > > > counts. No change to clock consumer drivers is required for this to > > > work. Please continue to use the clk.h api properly. > > > > just out of curiosity, did this move anywhere yet? (Last message from > > october > > 1st it seems) > > > > It looks like it is needed to fix the orphan-deferral I need on Rockchip > > that > > breaks sunxi in its current state. > > Yes, I'm preparing another version. Sorry for high latency, but I've been > traveling for more than 2 months non-stop.
Done. See: http://lkml.kernel.org/r/<[email protected]> Regards, Mike > > Regards, > Mike > > > > > > > Thanks > > Heiko > >
