On Mon, May 26, 2014 at 07:55:47PM +0200, Hans de Goede wrote: > power-on-seq = "gpio_reg_enable", "usleep > 1000", "clk_32khz", "usleep 200";
... > Where power-on-seq would tell the mmc-core exactly how to bring up the sdio > device, using standard prefixes so that the mmc-core knows that something is > a clock / gpio / reset / whatever. There was some work on such generic power on sequences in DT from Alexandre Courbot a while ago, search for "Runtime Interpreter Power Sequences". It ground to a halt IIRC mainly because it was never clear that this should ever be encoded outside of the driver for a device but the binding was pretty good and well reviewed, it's a good place to start if there's a desire to do things like this.
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