The default is that the high time for open-drain clk is one
PPBAUD, which is typically very short. Some device require
a longer high time during the open-drain address phase so
add a property to allow device tree to override the default.
Signed-off-by: Mike J. Chen <mjchen@google.com>
DTS property attributes are (by default) not required.
Explicitly specifying `required: false` is redundant.
Perhaps a warning to that effect would be useful.
Signed-off-by: Chris Friedt <cfriedt@meta.com>