Hi, On Wed, Jan 28, 2015 at 10:35:01AM +0100, Pavel Machek wrote: > Nokia N900 contains bluetooth module connected on serial > port. Unfortunately, serial and bluetooth are rather closely coupled, > so standard serial driver can not be used, and we really don't want > /dev/ttyS1 to be published for internal port of bluetooth > stack... Hence solution below. Actually that's not true. If one takes a deeper look into Nokia's bcm2048 driver one can see, that it's using more or less the same protocol as other bluetooth modules (H4) with some custom extensions. The only special thing are two additional GPIOs, which are enabled before sending data, so that the bluetooth chip and the omap can wakeup each other. I don't think one can speak of "closely coupled" for this. The only reason you needed this hacked DT binding is, that you do not want to properly fix the bcm2048 driver, so that it can use the omap-serial driver. -- Sebastian
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