[PATCH 1/3] mmc: add support for power-on sequencing through DT

Russell King - ARM Linux linux at arm.linux.org.uk
Tue Jan 21 14:19:49 EST 2014


On Mon, Jan 20, 2014 at 04:47:34PM -0200, Fabio Estevam wrote:
> On Mon, Jan 20, 2014 at 3:16 PM, Russell King - ARM Linux
> <linux at arm.linux.org.uk> wrote:
> 
> > Not as far as I can see.  fixed-clock appears to have two properies:
> >
> >         clock-frequency
> >         clock-output-names
> >
> > and nothing else.  See of_fixed_clk_setup in drivers/clk/clk-fixed-rate.c.
> > You'll also find that the documentation in this file says this about it:
> 
> Looks like Documentation/devicetree/bindings/clock/fixed-clock.txt is
> misleading then:
> 
> "Optional properties:
> - gpios : From common gpio binding; gpio connection to clock enable pin."

It seems so.  It appears that the binding was added to clk-fixed-rate.c
here:

commit 015ba40246497ae02a5f644d4c8adfec76d9b75c
Date:   Sat Apr 7 21:39:39 2012 -0500

and the binding documentation separately:

commit 766e6a4ec602d0c107553b91b3434fe9c03474f4
Date:   Mon Apr 9 14:50:06 2012 -0500

>From what I can see, this "gpios" property has never been supported.

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