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>

diff --git a/drivers/clocksource/timer-microchip-pit64b.c b/drivers/clocksource/timer-microchip-pit64b.c
index 790d2c9..abce83d 100644 (file)
--- a/drivers/clocksource/timer-microchip-pit64b.c
+++ b/drivers/clocksource/timer-microchip-pit64b.c
@@ -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;