I've solved this issue. I just needed to add CONFIG_DA8XX_GPIO in my configuration file. Regards, Gabriele Da: Gabriele Filosofi Inviato: giovedì 29 dicembre 2011 11.15 A: 'u-boot at lists.denx.de' Oggetto: [U-Boot] arm, da850: gpio control Hi all, Please, what I have to include to use gpio support for da850 platform ? Thanks, Gabriele