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

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

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220304133601.2404086-4-claudiu.beznea@microchip.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Claudiu Beznea 2022-03-04 15:35:58 +02:00 committed by Daniel Lezcano
parent ff10ee97cb
commit 389e3bff69
1 changed files with 2 additions and 4 deletions
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6
drivers/clocksource/timer-microchip-pit64b.c
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@ -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;