Thread (36 messages) 36 messages, 8 authors, 2014-02-19

[PATCH 0/4] clk: mvebu: fix clk init order

From: Mike Turquette <hidden>
Date: 2014-02-05 14:08:11
Also in: lkml

Quoting Sebastian Hesselbarth (2014-01-25 10:19:06)
This patch set fixes clk init order that went upside-down with
v3.14. I haven't really investigated what caused this, but I assume
it is related with DT node reordering by addresses.

Anyway, with v3.14 for MVEBU SoCs, the clock gating driver gets
registered before core clocks driver. Unfortunately, we cannot
return -EPROBE_DEFER in drivers initialized by clk_of_init. As the
init order for our drivers is always core clocks before clock gating,
we maintain init order ourselves by hooking CLK_OF_DECLARE to one
init function that will register core clocks before clock gating
driver.

This patch is based on pre-v3.14-rc1 mainline and should go in as
fixes for it. As we now send MVEBU clk pull-requests to Mike directly,
I suggest Jason picks it up as a topic branch.
Sebastian,

These patches look OK to me. I'd rather take Gregory Clement's "respect
the clock dependencies in of_clk_init" patch towards 3.15, so this fix
will still be necessary for the current -rc's.

Jason, will you be sending a PR?

Thanks,
Mike
The patches have been boot tested on Dove and compile-tested only
for Kirkwood, Armada 370 and XP.

Sebastian Hesselbarth (4):
  clk: mvebu: armada-370: maintain clock init order
  clk: mvebu: armada-xp: maintain clock init order
  clk: mvebu: dove: maintain clock init order
  clk: mvebu: kirkwood: maintain clock init order

 drivers/clk/mvebu/armada-370.c | 21 ++++++++++-----------
 drivers/clk/mvebu/armada-xp.c  | 20 +++++++++-----------
 drivers/clk/mvebu/dove.c       | 19 +++++++++----------
 drivers/clk/mvebu/kirkwood.c   | 34 ++++++++++++++++------------------
 4 files changed, 44 insertions(+), 50 deletions(-)

---
Cc: Mike Turquette <redacted>
Cc: Jason Cooper <redacted>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <redacted>
Cc: Thomas Petazzoni <redacted>
Cc: Ezequiel Garcia <redacted>
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
-- 
1.8.5.2
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