linux-kernel - Re: [PATCH 00/10] clk: mvebu: restructure SoC clock drivers

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Message-ID: <20130520175827.GC31290@titan.lakedaemon.net>
Date:	Mon, 20 May 2013 13:58:27 -0400
From:	Jason Cooper <jason@...edaemon.net>
To:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Cc:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Andrew Lunn <andrew@...n.ch>,
	Mike Turquette <mturquette@...aro.org>,
	linux-kernel@...r.kernel.org,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 00/10] clk: mvebu: restructure SoC clock drivers

On Thu, May 16, 2013 at 06:46:58PM +0200, Thomas Petazzoni wrote:
> Sebastian, Jason, Andrew, Gregory,
> 
> On Sat, 11 May 2013 03:08:00 +0200, Sebastian Hesselbarth wrote:
> > Marvell EBU SoCs share some common clock functions that register core
> > clocks or clock gates from SoC specific data. These clock drivers are
> > organized by function and over time the drivers filled up with #ifdefs
> > to separate different SoC specific code.
> > 
> > This patch set first adds a new element to clock gate descriptors to
> > allow to pass clk flags per clock gate. (Patch 1)
> > 
> > Then it restructures MVEBU clock drivers into common clock setup and
> > SoC specific files and Kconfig options. The driver's init functions
> > are also registered to get called with of_clk_init. (Patches 2, 3-6)
> > 
> > It then switches Dove, Kirkwood, and Armada 370/XP to make use of
> > of_clk_init instead of mvebu_clocks_init. (Patches 7-9)
> > 
> > Finally, all obsolete files and Kconfig options are removed. (Patch 10)
> > 
> > It has been tested on CuBox (Dove) and Dockstar (Kirkwood) by me.
> > Armada 370 and XP are compile tested only and should get their Tested-by
> > from Thomas and Gregory, respectively.
> > 
> > @Mike: As this only touches MVEBU related code, I suggest to take it
> > all through the corresponding ARM branch.
> > 
> > Sebastian Hesselbarth (10):
> >   clk: mvebu: introduce per-clock-gate flags
> >   clk: mvebu: add common clock functions for core clk and clk gating
> >   clk: mvebu: add Dove SoC-centric clock init
> >   clk: mvebu: add Kirkwood SoC-centric clock init
> >   clk: mvebu: add Armada 370 SoC-centric clock init
> >   clk: mvebu: add Armada XP SoC-centric clock init
> >   ARM: dove: move DT boards to SoC-centric clock init
> >   ARM: kirkwood: move DT boards to SoC-centric clock init
> >   ARM: mvebu: move DT boards to SoC-centric clock init
> >   clk: mvebu: desintegrate obsolete file
> 
> Tested-by: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
> 
> I've tested on Armada 370 DB (after reverting the ARM core patch that
> prevents this platform from booting) and the Armada XP DB. Both boards
> boot fine, and detect PCIe devices as they should.
> 
> There is some conflict between this set of commits and the two commits
> that modify the PCIe clocks in my PCIe series. I've pushed a branch at
> https://github.com/MISL-EBU-System-SW/mainline-public/tree/marvell-pcie-v10-and-seb-clks
> which has the mvebu PCIe stuff + Sebastian patches on top of it, with
> the conflicts resolved. The tricky thing is that since Sebastian is
> adding new clock files, and then removing the old ones, it's pretty
> easy to "loose" the changes the two PCIe clock patches are doing. The
> branch above works on Armada 370/XP, so you can compare the clock files
> if needed.

hmm, in my haste yesterday, I did this in the opposite order (clk, then
pcie on top).  I'm going to reshuffle them because I don't want pcie
depending on and waiting for this clock series to be ready :)

The good news is everything (except kirkwood-pcie, ran out of time) made
it through linux-next!  Also, kisskb is now building mvebu_defconfig in
addition to all the other ones.

thx,

Jason.
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