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

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Date:	Tue, 04 Nov 2014 22:58:45 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	Kever Yang <kever.yang@...k-chips.com>
Cc:	Mike Turquette <mturquette@...aro.org>, dianders@...omium.org,
	sonnyrao@...omium.org, addy.ke@...k-chips.com, cf@...k-chips.com,
	xjq@...k-chips.com, hj@...k-chips.com, dkl@...k-chips.com,
	huangtao@...k-chips.com, linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] clk: rockchip: disable unused clocks

Hi Kever,

Am Dienstag, 4. November 2014, 17:11:10 schrieb Kever Yang:
> 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>

I applied this with some slight modifications.
- it seemed to be based on your dclk_ops series - fixed that
- remove the flag from the uart2 on the cortex-a9 too
- let DCLK_VOPx and HCLK_VOPx be autodisabled on rk3288
  [tested by Doug]


Heiko
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