On Wed, Dec 14, 2016 at 09:52:31PM +0800, Chen-Yu Tsai wrote: > What this patch does is make sure the registers match, to guarantee > access, and then reinitialize the regmap cache to get rid of any > stale data.
So what you're saying is that previous writes may have been ignored? > > If the chip has been reset then you'd want to reset the cache too. I've > > no idea if that's needed here or not though, it depends what happens to > > the global state of the chip when this reconfiguration happens. > It is not a reset in the general sense. I suppose a better way would > be to do an explicit write to the register first, then initialize > the regmap. I'd have to export the write function from the RSB bus > driver first though. Surely just doing a write immediately after initializing the regmap would have the same effect? That'd ensure that the hardware has the desired value before there are any other writes. But I might be missing something here.
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