On Tue, Jan 16, 2018 at 08:02:06PM +0000, Trent Piepho wrote: > On Tue, 2018-01-16 at 08:59 +0530, Jassi Brar wrote: > > Now the idea dawns that DT provide both clocks and the driver select > > from the mux looking at speed requirements of the slave at runtime. > add this feature at some point. It might be simpler to just prefer > HCLK if both are there. The idea being that the DT should describe the > hardware rather than tell the driver what to do. Or only try one if the other fails to give something. > Speed can be changed on a xfer by xfer basis on a single message to a > single slave. Trying to switch clocks during a message, if it requires > resetting the whole block, sounds rather difficult. In practice that's so vanishingly rare it's probably not worth worrying about.
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