Commit 8ffe9c7b authored by Peng Fan's avatar Peng Fan Committed by Shawn Guo
Browse files

clk: imx: pfdv2: switch to use determine_rate 



Per clk_ops, compared with round_rate, determine_rate could optionally
support the parent clock that should be used to provide the clock rate.

In this patch, the parent clock is just parent->rate as round_rate.

The following patch will calculate the best parent clock.

Signed-off-by: default avatarPeng Fan <peng.fan@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 28b2f82e

drivers/clk/imx/clk-pfdv2.c

+9 −6
Original line number Diff line number Diff line
@@ -98,10 +98,11 @@ static unsigned long clk_pfdv2_recalc_rate(struct clk_hw *hw, 
	return tmp;

}



static long clk_pfdv2_round_rate(struct clk_hw *hw, unsigned long rate,

				 unsigned long *prate)

static int clk_pfdv2_determine_rate(struct clk_hw *hw,

				    struct clk_rate_request *req)

{

	u64 tmp = *prate;

	u64 tmp = req->best_parent_rate;

	u64 rate = req->rate;

	u8 frac;



	tmp = tmp * 18 + rate / 2;
@@ -113,11 +114,13 @@ static long clk_pfdv2_round_rate(struct clk_hw *hw, unsigned long rate, 
	else if (frac > 35)

		frac = 35;



	tmp = *prate;

	tmp = req->best_parent_rate;

	tmp *= 18;

	do_div(tmp, frac);



	return tmp;

	req->rate = tmp;



	return 0;

}



static int clk_pfdv2_is_enabled(struct clk_hw *hw)
@@ -167,7 +170,7 @@ static const struct clk_ops clk_pfdv2_ops = { 
	.enable		= clk_pfdv2_enable,

	.disable	= clk_pfdv2_disable,

	.recalc_rate	= clk_pfdv2_recalc_rate,

	.round_rate	= clk_pfdv2_round_rate,

	.determine_rate	= clk_pfdv2_determine_rate,

	.set_rate	= clk_pfdv2_set_rate,

	.is_enabled     = clk_pfdv2_is_enabled,

};

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