Commit 2f3d32fe authored by Daniel Mack's avatar Daniel Mack Committed by Stephen Boyd
Browse files

clk: cs2000-cp: freeze config during register fiddling 



Make sure to freeze the configuration of the chip during the programming
of 32-bit registers. This avoids the processing of invalid intermediate
states.

Signed-off-by: default avatarDaniel Mack <daniel@zonque.org>
Link: https://lore.kernel.org/r/20220125093336.226787-9-daniel@zonque.org


Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent b8368825

drivers/clk/clk-cs2000-cp.c

+9 −0
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ 
#define FRACNSRC_DYNAMIC	(1 << 0)



/* GLOBAL_CFG */

#define FREEZE		(1 << 7)

#define ENDEV2		(0x1)



/* FUNC_CFG1 */
@@ -335,6 +336,10 @@ static int __cs2000_set_rate(struct cs2000_priv *priv, int ch, 
{

	int ret;



	ret = cs2000_bset(priv, GLOBAL_CFG, FREEZE, FREEZE);

	if (ret < 0)

		return ret;



	ret = cs2000_select_ratio_mode(priv, rate, parent_rate);

	if (ret < 0)

		return ret;
@@ -347,6 +352,10 @@ static int __cs2000_set_rate(struct cs2000_priv *priv, int ch, 
	if (ret < 0)

		return ret;



	ret = cs2000_bset(priv, GLOBAL_CFG, FREEZE, 0);

	if (ret < 0)

		return ret;



	priv->saved_rate	= rate;

	priv->saved_parent_rate	= parent_rate;