Silicon Labs' si570 clock driver re-initializes the register space from
non-volatile memory by issuing a 'recall NVM to RAM' operation during
probe(). This operation causes the device to re-calibrate the frequency of
clock out. If the clock is being used while this operation is occurring, a
pause/glitch could be detected on the clock out. For use cases that the
clock frequency needs to remain consistent from power on, a device tree
optional property is added so the recall operation could be skipped.
Saeed Nowshadi (2):
dt-bindings: clock: si570: Add 'silabs,skip-recall' property
clk: si570: Skip NVM to RAM recall operation if an optional property
is set
Documentation/devicetree/bindings/clock/silabs,si570.txt | 2 ++
drivers/clk/clk-si570.c | 16 ++++++++++++----
2 files changed, 14 insertions(+), 4 deletions(-)
--
2.7.4
