[Patch v5 08/13] ARM: imx6q: add config-on-boot gpios

On 06/20/2012 10:05 AM, Shawn Guo wrote:

On Wed, Jun 20, 2012 at 09:29:39AM -0500, Rob Herring wrote:

quoted

I mean just something like "fsl,hub-reset-gpios" in the ehci device
node. It's at least under a usb node. Whether the ehci driver handles
this or you just have a separate piece of code to find this property and
setup the gpio is up to you.

I ever had an argument on this.  If we have "fsl,hub-reset-gpios"
defined in ehci device node, it should simply be ehci driver who needs
to find this property and set up the gpio.  Defining the property in
ehci device node while having platform code to find the property just
seems wired to me.  That said, if it's not ehci driver who will use
the property, we should not define the property in in ehci device node.

There's no requirement that 1 DT node be 1 driver. That's purely an OS
decision and it's usually simpler that way. But if it it's just a one
time thing at boot, then its fine for the platform code to handle it.

Rob