Messages in this thread |  | | Date | Mon, 30 Jan 2012 09:43:23 -0800 | From | Tony Lindgren <> | Subject | Re: Pinmux bindings proposal V2 |
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* Shawn Guo <shawn.guo@linaro.org> [120129 17:27]: > On Fri, Jan 27, 2012 at 09:16:53AM -0800, Tony Lindgren wrote: > ... > > I guess the analog we should follow here is clk_get and clk_set_rate, > > except we would have pinconf_set_state with predefined states. > > > It seems working for cases that we only change pinconf but never pinmux > for different configuration states. But how would that work for cases > that require mux change for different configuration states?
I don't see why we should not allow changing the mux state with pinconf too, after all it's the mux/pin that's locked, not the functionality of the pin.
An example of this would be remuxing a shared UART line between rx and tx. Those kind of cases could be defined as PMX_DIRECTION_INPUT and PMX_DIRECTION_OUTPUT so driver could call Linux generic functions for those if implemented.
Regards,
Tony
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