clk: mvebu: armada-37xx-periph: change suspend/resume time
authorMiquel Raynal <miquel.raynal@bootlin.com>
Thu, 27 Jun 2019 12:52:43 +0000 (14:52 +0200)
committerStephen Boyd <sboyd@kernel.org>
Thu, 3 Oct 2019 21:00:20 +0000 (14:00 -0700)
commite7ea59b6dc6ddb86dabf88c11cd6748da2313b37
treeb50339e4f31c4e1a2e58e3ee9a758cd9e0044881
parent4d8fb4948472c976d0c6dcf3380f92332dd660c1
clk: mvebu: armada-37xx-periph: change suspend/resume time

Armada 3700 PCIe IP relies on the PCIe clock managed by this
driver. For reasons related to the PCI core's organization when
suspending/resuming, PCI host controller drivers must reconfigure
their registers at suspend_noirq()/resume_noirq() which happens after
suspend()/suspend_late() and before resume_early()/resume().

Device link support in the clock framework enforce that the clock
driver's resume() callback will be called before the PCIe
driver's. But, any resume_noirq() callback will be called before all
the registered resume() callbacks.

The solution to support PCIe resume operation is to change the
"priority" of this clock driver PM callbacks to "_noirq()".

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lkml.kernel.org/r/20190627125245.26788-3-miquel.raynal@bootlin.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
drivers/clk/mvebu/armada-37xx-periph.c