linux-kernel - Re: [PATCH] clk: rockchip: ensure HCLK_VIO2_H2P and PCLK_VIO2

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Message-ID: <CAD=FV=UsYWDw0wB6KSANXZYnnBFdTL9wOEqf9DoUF8aFuDpNSw@mail.gmail.com>
Date:	Wed, 12 Nov 2014 13:49:18 -0800
From:	Doug Anderson <dianders@...omium.org>
To:	Dmitry Torokhov <dtor@...omium.org>
Cc:	Heiko Stuebner <heiko@...ech.de>,
	Mike Turquette <mturquette@...aro.org>,
	Jianqun <jay.xu@...k-chips.com>,
	Kever Yang <kever.yang@...k-chips.com>,
	Mark yao <mark.yao@...k-chips.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] clk: rockchip: ensure HCLK_VIO2_H2P and PCLK_VIO2_H2P
 stay enabled

Hi,

On Wed, Nov 12, 2014 at 1:38 PM, Dmitry Torokhov <dtor@...omium.org> wrote:
> Currently there is no driver owning these clocks and they have to stay
> up for the system to function properly, so let's mark them as
> CLK_IGNORE_UNUSED.
>
> Without this patch we have trouble with suspend/resume and we have
> trouble turning the eDP back on if it ever idles off.
>
> Signed-off-by: Doug Anderson <dianders@...omium.org>
> Signed-off-by: Dmitry Torokhov <dtor@...omium.org>
> ---
>  drivers/clk/rockchip/clk-rk3288.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

I'm already on the signed-off-by (mostly because I tweaked the commit
message and tested this), but in case anyone cares I have reviewed
this and tested it.  ;)

...obviously we want to get to the bottom of the right way to handle
all of these clocks, but since we _just_ removed the blanket "leave
all clocks enabled" adding a few clocks back into the fold seems sane
until we get all our ducks in a row.

Reviewed-by: Doug Anderson <dianders@...omium.org>
Tested-by: Doug Anderson <dianders@...omium.org>
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