Commit a6e11bb2 authored by Daniel Mack's avatar Daniel Mack Committed by Stephen Boyd
Browse files

clk: cs2000-cp: Make aux output function controllable 



The aux output pin can be configured to output either of the two clock
inputs, the generated clock or the pll lock status. Allow access to
this feature through a new optional device-tree property.

Signed-off-by: default avatarDaniel Mack <daniel@zonque.org>
Link: https://lore.kernel.org/r/20220125093336.226787-6-daniel@zonque.org


Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent 519ba32e

drivers/clk/clk-cs2000-cp.c

+9 −0
Original line number Diff line number Diff line
@@ -39,6 +39,8 @@ 
/* DEVICE_CFG1 */

#define RSEL(x)		(((x) & 0x3) << 3)

#define RSEL_MASK	RSEL(0x3)

#define AUXOUTSRC(x)	(((x) & 0x3) << 1)

#define AUXOUTSRC_MASK	AUXOUTSRC(0x3)

#define ENDEV1		(0x1)



/* DEVICE_CFG2 */
@@ -421,12 +423,19 @@ static int cs2000_clk_register(struct cs2000_priv *priv) 
	struct clk_init_data init;

	const char *name = np->name;

	static const char *parent_names[CLK_MAX];

	u32 aux_out = 0;

	int ch = 0; /* it uses ch0 only at this point */

	int rate;

	int ret;



	of_property_read_string(np, "clock-output-names", &name);



	of_property_read_u32(np, "cirrus,aux-output-source", &aux_out);

	ret = cs2000_bset(priv, DEVICE_CFG1,

			  AUXOUTSRC_MASK, AUXOUTSRC(aux_out));

	if (ret < 0)

		return ret;



	/*

	 * set default rate as 1/1.

	 * otherwise .set_rate which setup ratio