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From: jamesjj.liao@mediatek.com (James Liao)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 06/10] clk: mediatek: mt8173: Fix enabling of critical clocks
Date: Thu, 30 Jul 2015 10:23:33 +0800	[thread overview]
Message-ID: <1438223013.17770.42.camel@mtksdaap41> (raw)
In-Reply-To: <20150730002754.GG3159@codeaurora.org>

Hi Stephen,

On Wed, 2015-07-29 at 17:27 -0700, Stephen Boyd wrote:
> On 07/29, James Liao wrote:
> > From: Sascha Hauer <s.hauer@pengutronix.de>
> > 
> > On the MT8173 the clocks are provided by different units. To enable
> > the critical clocks we must be sure that all parent clocks are already
> > registered, otherwise the parents of the critical clocks end up being
> > unused and get disabled later.
> > 
> > On MT8173, for example, it is the CLK_TOP clocks that have CLK_APMIXED
> > PLLs as their parents, so we cannot enable the CLK_TOP critical clocks
> > until the CLK_APMIXED clocks have all been registered.
> > 
> > To find a place where all parents are registered we try each time
> > after we've registered some clocks if all known providers are present
> > now and only then we enable the critical clocks.
> > 
> > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> > Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
> > ---
> 
> Please move up to v4.2-rc2 so that this patch can be dropped. I
> already applied this and sent it off to Linus so it's in -rc2.

OK. I'll rebase to v4.2-rc2 in next patchset.


Best regards,

James

  reply	other threads:[~2015-07-30  2:23 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-29  6:52 [PATCH v5 00/10] Fixes and new clocks support for Mediatek MT8173 James Liao
2015-07-29  6:52 ` [PATCH v5 01/10] clk: mediatek: Removed unused dpi_ck clock from MT8173 James Liao
2015-07-29  7:05   ` Heiko Stübner
2015-07-29  7:17     ` James Liao
2015-07-30 17:36       ` Stephen Boyd
2015-07-30 18:04         ` Heiko Stübner
2015-07-30 19:42           ` Stephen Boyd
2015-07-30 20:07             ` Heiko Stübner
2015-07-29  6:52 ` [PATCH v5 02/10] clk: mediatek: Remove unused code " James Liao
2015-07-29  6:52 ` [PATCH v5 03/10] clk: mediatek: Add __initdata and __init for data and functions James Liao
2015-07-29  6:52 ` [PATCH v5 04/10] clk: mediatek: Add fixed clocks support for Mediatek SoC James Liao
2015-07-29  6:52 ` [PATCH v5 05/10] clk: mediatek: Fix rate and dependency of MT8173 clocks James Liao
2015-07-29  6:52 ` [PATCH v5 06/10] clk: mediatek: mt8173: Fix enabling of critical clocks James Liao
2015-07-30  0:27   ` Stephen Boyd
2015-07-30  2:23     ` James Liao [this message]
2015-07-29  6:52 ` [PATCH v5 07/10] dt-bindings: ARM: Mediatek: Document devicetree bindings for clock controllers James Liao
2015-07-29  6:52 ` [PATCH v5 08/10] clk: mediatek: Add subsystem clocks of MT8173 James Liao
2015-07-29  6:52 ` [PATCH v5 09/10] clk: mediatek: Add USB clock support in MT8173 APMIXEDSYS James Liao
2015-07-29  6:52 ` [PATCH v5 10/10] arm64: dts: mt8173: Add subsystem clock controller device nodes James Liao

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