Thread (24 messages) 24 messages, 4 authors, 2016-02-28

Re: [PATCH/RFC v2 05/11] soc: renesas: rcar: Handle clock domain devices in SYSC PM domains

From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: 2016-02-16 08:02:36
Also in: linux-arm-kernel, linux-pm, linux-renesas-soc

Hi Geert,

On Tuesday 16 February 2016 08:30:03 Geert Uytterhoeven wrote:
On Mon, Feb 15, 2016 at 11:08 PM, Laurent Pinchart wrote:
quoted
On Monday 15 February 2016 22:16:54 Geert Uytterhoeven wrote:
quoted
R-Car H3 contains some hardware modules (e.g. VSP and FCP_V) that are
not only located in a power area controlled by the SYSC system
controller, but that are also part of the generic CPG/MSSR clock domain.
Make sure both are handled by enabling module clock PM when the device
for such a hardware module is attached to the SYSC PM Domain.
Can't we specify both power domains in the DT power-domains attribute
instead ?
While the DT property is called "power-domains" (plural), only the first
entry is parsed by genpd_dev_pm_attach(). Which makes sense for power areas
(if there are multiple, they are nested), but indeed can cause problems
when mixed with clock domains.

For R-Mobile, I fixed it in a similar way.
Still, shouldn't it be fixed in genpd ?

-- 
Regards,

Laurent Pinchart
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