Hello, On Mon, Apr 19, 2010 at 10:28:13AM +0200, Wolfram Sang wrote: > From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> > > Newer i.MX-variants can route the content of the Sample Status Register to the > Data Register, but older ones can't. So, use the Sample Register to be generic. > As a drawback, the ability to read back the values of output GPIOs is lost. AFAIK the last sentence (that was authored by Wolfram, though the patch is mine) is wrong. I checked mx27 and mx35 specs and both the overview and the actual description suggest that reading output values works (using PSR aka SSR) when the iomuxer is configured for GPIO. Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
