[PATCH 1/2] clk: socfpga: add divider registers to the main pll outputs

Steffen Trumtrar s.trumtrar at pengutronix.de
Wed Apr 16 13:49:50 PDT 2014


Hi!

On Wed, Apr 16, 2014 at 03:23:11PM -0500, Dinh Nguyen wrote:
> 
> 
> On 04/16/2014 03:14 PM, dinguyen at altera.com wrote:
> >From: Dinh Nguyen <dinguyen at altera.com>
> >
> >The C0(mpu_clk), C1(main_clk), and C2(dbg_base_clk) outputs from the main
> >PLL go through a pre-divider before coming into the system. These registers
> >were hidden for the CycloneV platform, but are not used for the ArriaV
> 
> Sorry but this should be "but are now used"
> 

???

I don't get it. Do we have these registers on the cyclone V AND arria V or do
we only have them on the arria V ?

IIRC I had made a patch that adds dividers to some place in the clocktree, but
I can't remember if these are the same.

Regards,
Steffen

> >platform.
> >
> >This patch updates the clock driver to read the div-reg property for the
> >socfpga-periph-clk clocks. Also moves the div_mask define to clk.h for re-use.
> >
> >Signed-off-by: Dinh Nguyen <dinguyen at altera.com>

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