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Commit 4824b61c authored by Bai Ping's avatar Bai Ping Committed by Shawn Guo
Browse files

clk: imx: add 'is_prepared' clk_ops callback for pllv3 clk 



Add 'is_prepared' callback function for pllv3 type clk to make sure when
the system is bootup, the unused clk is in a known state to match the
prepare count info.

Signed-off-by: default avatarBai Ping <b51503@freescale.com>
Reviewed-by: default avatarLucas Stach <l.stach@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 78ae71ac

drivers/clk/imx/clk-pllv3.c

+14 −0
Original line number Diff line number Diff line
@@ -97,6 +97,16 @@ static void clk_pllv3_unprepare(struct clk_hw *hw) 
	writel_relaxed(val, pll->base);

}



static int clk_pllv3_is_prepared(struct clk_hw *hw)

{

	struct clk_pllv3 *pll = to_clk_pllv3(hw);



	if (readl_relaxed(pll->base) & BM_PLL_LOCK)

		return 1;



	return 0;

}



static unsigned long clk_pllv3_recalc_rate(struct clk_hw *hw,

					   unsigned long parent_rate)

{
@@ -139,6 +149,7 @@ static int clk_pllv3_set_rate(struct clk_hw *hw, unsigned long rate, 
static const struct clk_ops clk_pllv3_ops = {

	.prepare	= clk_pllv3_prepare,

	.unprepare	= clk_pllv3_unprepare,

	.is_prepared	= clk_pllv3_is_prepared,

	.recalc_rate	= clk_pllv3_recalc_rate,

	.round_rate	= clk_pllv3_round_rate,

	.set_rate	= clk_pllv3_set_rate,
@@ -193,6 +204,7 @@ static int clk_pllv3_sys_set_rate(struct clk_hw *hw, unsigned long rate, 
static const struct clk_ops clk_pllv3_sys_ops = {

	.prepare	= clk_pllv3_prepare,

	.unprepare	= clk_pllv3_unprepare,

	.is_prepared	= clk_pllv3_is_prepared,

	.recalc_rate	= clk_pllv3_sys_recalc_rate,

	.round_rate	= clk_pllv3_sys_round_rate,

	.set_rate	= clk_pllv3_sys_set_rate,
@@ -265,6 +277,7 @@ static int clk_pllv3_av_set_rate(struct clk_hw *hw, unsigned long rate, 
static const struct clk_ops clk_pllv3_av_ops = {

	.prepare	= clk_pllv3_prepare,

	.unprepare	= clk_pllv3_unprepare,

	.is_prepared	= clk_pllv3_is_prepared,

	.recalc_rate	= clk_pllv3_av_recalc_rate,

	.round_rate	= clk_pllv3_av_round_rate,

	.set_rate	= clk_pllv3_av_set_rate,
@@ -279,6 +292,7 @@ static unsigned long clk_pllv3_enet_recalc_rate(struct clk_hw *hw, 
static const struct clk_ops clk_pllv3_enet_ops = {

	.prepare	= clk_pllv3_prepare,

	.unprepare	= clk_pllv3_unprepare,

	.is_prepared	= clk_pllv3_is_prepared,

	.recalc_rate	= clk_pllv3_enet_recalc_rate,

};