From: sboyd@codeaurora•org (Stephen Boyd)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 5/7] clk: atlas7: fix the clock tree for bluetooth stuff
Date: Tue, 11 Aug 2015 17:02:29 -0700 [thread overview]
Message-ID: <20150812000229.GB26614@codeaurora.org> (raw)
In-Reply-To: <CAGsJ_4y=TC1LXC1CPB=c1bfY7ZR0ktMD+hVuUZWxXXpyRR9zEw@mail.gmail.com>
On 08/10, Barry Song wrote:
> 2015-08-06 9:44 GMT+08:00 Stephen Boyd <sboyd@codeaurora•org>:
> >
> > This actually points out a big problem we have right now in Linux, which is
> > the lack of proper power management for the type of bus topology you see in
> > embedded systems. Some of the genpd work going on may also be another
> > solution to this problem, where we could group multiple devices into generic
> > power domains that know to turn on 2 or 3 of the clocks. For example, the
> > DMAC, USP, and UART device could all be in the APB power domain so that the
> > a7ca_io_clk is enabled whenever one of those devices is active. And there
> > could be another power domain for the NOC that encompasses all devices that
> > are sitting on that NOC.
> >
>
> Stephen, this should be a possible option, i will talk with HW guys to
> figure out the relationship of power domain, and check whether we
> handle this issue by the power domain solution.
>
> btw, would you apply other patches in this series at first? we can
> hold on this one to find a final solution.
>
Yes. I'll apply the rest to clk-next.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2015-08-12 0:02 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-28 6:27 [PATCH 0/7] clk: atlas7: a bind of fixes Barry Song
2015-07-28 6:27 ` [PATCH 1/7] clk: atlas7: add lost pwm unit clks Barry Song
2015-07-28 6:27 ` [PATCH 2/7] clk: atlas7: export mux clks so that driver can use it Barry Song
2015-07-28 21:56 ` Stephen Boyd
2015-07-29 12:24 ` Barry Song
2015-07-28 6:27 ` [PATCH 3/7] clk: sirf: fix integer overflow in dto rate calculation Barry Song
2015-07-28 6:27 ` [PATCH 4/7] clk: atlas7: replace dto resolution magic number by macro Barry Song
2015-07-28 6:27 ` [PATCH 5/7] clk: atlas7: fix the clock tree for bluetooth stuff Barry Song
2015-07-28 22:07 ` Stephen Boyd
2015-07-29 14:52 ` Barry Song
2015-08-06 1:44 ` Stephen Boyd
2015-08-06 9:53 ` Barry Song
2015-08-10 2:35 ` Barry Song
2015-08-12 0:02 ` Stephen Boyd [this message]
2015-08-12 2:39 ` Barry Song
2015-07-28 6:27 ` [PATCH 6/7] clk: sirf: fix bit field and its root clk for coresight_tpiu Barry Song
2015-07-28 6:27 ` [PATCH 7/7] clk: atlas7: fix pll missed divide NR in fraction mode Barry Song
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