On Tue, Jun 17, 2014 at 11:04:32AM +0300, Tomi Valkeinen wrote: > When setting the rate of a clock, by default the clock framework will > change the parent of the clock to the most suitable one in > __clk_mux_determine_rate() (most suitable by looking at the clock rate). > > This is a rather dangerous default, and causes problems on AM43x when > using display and ethernet. There are multiple ways to select the clock > muxes on AM43x, and some of those clock paths have the same source > clocks for display and ethernet. When changing the clock rate for the > display subsystem, the clock framework decides to change the display mux > from the dedicated display PLL to a shared PLL which is used by the > ethernet, and then changes the rate of the shared PLL, breaking the > ethernet. > > As I don't think there ever is a case where we want the clock framework > to automatically change the parent clock of a clock mux, this patch sets > the CLK_SET_RATE_NO_REPARENT for all ti,mux-clocks. > > Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx> am437x-sk presents no problem with this patch: Tested-by: Felipe Balbi <balbi@xxxxxx> -- balbi
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