Hi,
Heiko Stübner wrote:
> From: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxx>
>
> On i.MX, which carries a lot of pin-groups of which most are unused on
> individual boards, they noticed that this plehora of nodes also results
> in the runtime-lookup-performance also degrading [0].
>
> A i.MX-specific solution defining the pingroups in the board files but
> using macros to reference the pingroup-data was not well received
>
> This patch is trying to solve this issue in a more general way, by
> adding the ability to mark nodes as needing to be referenced somewhere
> in the tree.
>
> To mark a node a needing to be referenced it must be prefixed with
> /delete-unreferenced/. This makes dtc check the nodes reference-status
> when creating the flattened tree, dropping it if unreferenced.
>
> For example, the i.MX6SL pingroup
>
> /delete-uneferenced/ pinctrl_ecspi1_1: ecspi1grp-1 {
^^
s/unef/unref/
not really important here, but bad for copy/pasters
Lothar Waßmann
--
___________________________________________________________
Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen
Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10
Geschäftsführer: Matthias Kaussen
Handelsregistereintrag: Amtsgericht Aachen, HRB 4996
www.karo-electronics.de | info@xxxxxxxxxxxxxxxxxxx
___________________________________________________________
--
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
