clk_bulk_get_optional() allows to get a group of clocks where one
or more is optional. For a not available clock, e.g. not specifed
in the clock consumer node in DT, its respective struct clk pointer
will be NULL. This allows for operating on a group of returned
clocks (struct clk_bulk_data array) with existing clk_bulk* APIs.
Change-Id: Ia706f1a64515e1c4c6fcbba992da7cee4ed8fe9c
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
(cherry picked from commit 2f25528e4e)
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
895be97f13