Hi Sebastian, On Wed, Jul 30, 2014 at 02:45:51PM +0000, Priebe, Sebastian wrote: > Hello, > > I am working on a project with an ARMv6 cpu and I am currently trying > to port our board file to a device tree. Our custom hardware has a > CPLD with is used by multiple driver. In the past we shared the CPLD > driver resource (struct resource...) among the drivers platform data > to be able to access the CPLD registers from all the drivers. The > CPLD driver allocated the resource, returned it to our platform code > and our platform code passed it to the other drivers. > In other words the CPLD driver is used by the other driver. > How can I achieve the same with a device tree? You can use a toplevel device node for your CPLD on which your toplevel driver matches. Call of_platform_populate() with this toplevel node to create the child devices. drivers/bus/ contains some examples, like drivers/bus/imx-weim.c. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
