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

On Thu, Feb 06, 2014 at 02:08:39PM -0300, Ezequiel Garcia wrote:

On Wed, Feb 05, 2014 at 01:34:57PM -0500, Jason Cooper wrote:

quoted

On Sat, Jan 25, 2014 at 07:19:06PM +0100, Sebastian Hesselbarth wrote:

quoted

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.

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(-)

Whole series applied to mvebu/clk-fixes.

FWIW, Tested-by: Ezequiel Garcia [off-list ref]

Observed "division by zero" get fixed by this, on A370 Mirabox, Kirkwood
Topkick and Dove Cubox.

Added for patches 1, 3, and 4 (all but armada-xp.c)  Thanks for testing.

thx,

Jason.