Commit 5d26c15d authored Jan 23, 2014 by Chao Xie Committed by Mike Turquette Mar 26, 2014

clk: mmp: try to use closer one when do round rate



The orignal code will use the bigger rate between
"previous rate" and "current rate" when caculate the
rate.
In fact, hardware cares about the closest one.
So choose the closer rate between "previous rate" and
"current rate".

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

parent c45693a6

drivers/clk/mmp/clk-frac.c

+7 −3

Original line number	Diff line number	Diff line
		@@ -45,11 +45,15 @@ static long clk_factor_round_rate(struct clk_hw *hw, unsigned long drate,
		if (rate > drate)
		break;
		}
		if ((i == 0) \|\| (i == factor->ftbl_cnt))
		if ((i == 0) \|\| (i == factor->ftbl_cnt)) {
		return rate;
		} else {
		if ((drate - prev_rate) > (rate - drate))
		return rate;
		else
		return prev_rate;
		}
		}

		static unsigned long clk_factor_recalc_rate(struct clk_hw *hw,
		unsigned long parent_rate)