linux-kernel - Re: [PATCH v5] clk: rockchip: disable unused clocks

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Date:	Tue, 4 Nov 2014 10:08:38 -0800
From:	Doug Anderson <dianders@...omium.org>
To:	Kever Yang <kever.yang@...k-chips.com>
Cc:	Mike Turquette <mturquette@...aro.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Sonny Rao <sonnyrao@...omium.org>,
	Addy Ke <addy.ke@...k-chips.com>,
	Eddie Cai <cf@...k-chips.com>, Jianqun Xu <xjq@...k-chips.com>,
	han jiang <hj@...k-chips.com>,
	戴克霖 (Jack) <dkl@...k-chips.com>,
	Tao Huang <huangtao@...k-chips.com>,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5] clk: rockchip: disable unused clocks

Kever,

On Tue, Nov 4, 2014 at 1:11 AM, Kever Yang <kever.yang@...k-chips.com> wrote:
> The rockchip clock driver use CLK_IGNORE_UNUSED flag to make sure
> all the clocks are available like default power on state.
> We have implement the clock manage in most of rockchip drivers,
> it is time to remove it for power save.
> Instead we add CLK_IGNORE_UNUSED for some clock nodes which should
> be on during boot or no module driver in kernel will initialize it.
>
> Signed-off-by: Kever Yang <kever.yang@...k-chips.com>
> Reviewed-by: Doug Anderson <dianders@...omium.org>
> Tested-by: Doug Anderson <dianders@...omium.org>
> ---
>
> Changes in v5:
> - take CLK_IGNORE_UNUSED tag out of EMMC and UART2
> - take CLK_IGNORE_UNUSED tag out of pclk_publ*, pclk_ddrupctl*
> - add Doug's Reviewed-by and Tested-by

You also took CLK_IGNORE_UNUSED out of dclk_vop0.  I don't have a
problem with that since my test cases still work and I'm all for
removing as many of these as we can.


> Changes in v4:
> - add CLK_IGNORE_UNUSED tag for all the niu/arbi/matrix clock
>
> Changes in v3:
> - get CLK_DIVIDER_READ_ONLY tag back fro armcores
> - add CLK_IGNORE_UNUSED tag for cs_dbg, pclk_dgb_pre and pclk_rkpwm
>
> Changes in v2:
> - get some clock ID back
> - add CLK_IGNORE_UNUSED tag for aclk_strc and aclk_core in clk-rk3188.c
> - add CLK_IGNORE_UNUSED tag for rk3288 dwc2
>
>  drivers/clk/rockchip/clk-rk3188.c |  40 ++++++------
>  drivers/clk/rockchip/clk-rk3288.c | 132 +++++++++++++++++++-------------------
>  drivers/clk/rockchip/clk.c        |   9 ---
>  3 files changed, 86 insertions(+), 95 deletions(-)

For whatever reason this patch didn't apply super cleanly.  Maybe you
have other local patches to these files that you didn't send up?  It's
nice to post a patch directly atop some upstream tree.  I get:

fatal: sha1 information is lacking or useless
(drivers/clk/rockchip/clk-rk3288.c).
Repository lacks necessary blobs to fall back on 3-way merge.
Cannot fall back to three-way merge.

...but "patch -p1 < x" had no trouble applying for me...
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