clk_bulk_get_optional
EXPORT_SYMBOL_GPL(clk_bulk_get_optional);
ret = clk_bulk_get_optional(dev, num_clks, clks);
ret = clk_bulk_get_optional(dev, num_clks, clks);
ret = clk_bulk_get_optional(dev, DW_XPCS_NUM_CLKS, xpcs->clks);
int __must_check clk_bulk_get_optional(struct device *dev, int num_clks,