Commit 389e3bff authored by Claudiu Beznea's avatar Claudiu Beznea Committed by Daniel Lezcano
Browse files

clocksource/drivers/timer-microchip-pit64b: Use 5MHz for clockevent 



Use 5MHz clock for clockevent timers. This increases timer's
resolution.

Signed-off-by: default avatarClaudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220304133601.2404086-4-claudiu.beznea@microchip.com


Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent ff10ee97

drivers/clocksource/timer-microchip-pit64b.c

+2 −4
Original line number Diff line number Diff line
@@ -42,8 +42,7 @@ 
#define MCHP_PIT64B_LSBMASK		GENMASK_ULL(31, 0)

#define MCHP_PIT64B_PRES_TO_MODE(p)	(MCHP_PIT64B_MR_PRES & ((p) << 8))

#define MCHP_PIT64B_MODE_TO_PRES(m)	((MCHP_PIT64B_MR_PRES & (m)) >> 8)

#define MCHP_PIT64B_DEF_CS_FREQ		5000000UL	/* 5 MHz */

#define MCHP_PIT64B_DEF_CE_FREQ		32768		/* 32 KHz */

#define MCHP_PIT64B_DEF_FREQ		5000000UL	/* 5 MHz */



#define MCHP_PIT64B_NAME		"pit64b"
@@ -418,7 +417,6 @@ static int __init mchp_pit64b_init_clkevt(struct mchp_pit64b_timer *timer, 
static int __init mchp_pit64b_dt_init_timer(struct device_node *node,

					    bool clkevt)

{

	u32 freq = clkevt ? MCHP_PIT64B_DEF_CE_FREQ : MCHP_PIT64B_DEF_CS_FREQ;

	struct mchp_pit64b_timer timer;

	unsigned long clk_rate;

	u32 irq = 0;
@@ -446,7 +444,7 @@ static int __init mchp_pit64b_dt_init_timer(struct device_node *node, 
	}



	/* Initialize mode (prescaler + SGCK bit). To be used at runtime. */

	ret = mchp_pit64b_init_mode(&timer, freq);

	ret = mchp_pit64b_init_mode(&timer, MCHP_PIT64B_DEF_FREQ);

	if (ret)

		goto irq_unmap;