From: Claudiu Beznea <claudiu.beznea@microchip.com> To: <daniel.lezcano@linaro.org>, <tglx@linutronix.de> Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, Claudiu Beznea <claudiu.beznea@microchip.com> Subject: [PATCH v3 3/6] clocksource/drivers/timer-microchip-pit64b: use 5MHz for clockevent Date: Fri, 4 Mar 2022 15:35:58 +0200 [thread overview] Message-ID: <20220304133601.2404086-4-claudiu.beznea@microchip.com> (raw) In-Reply-To: <20220304133601.2404086-1-claudiu.beznea@microchip.com> Use 5MHz clock for clockevent timers. This increases timer's resolution. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> --- drivers/clocksource/timer-microchip-pit64b.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/clocksource/timer-microchip-pit64b.c b/drivers/clocksource/timer-microchip-pit64b.c index 790d2c9b42a7..abce83d2f00b 100644 --- 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; -- 2.32.0
WARNING: multiple messages have this Message-ID (diff)
From: Claudiu Beznea <claudiu.beznea@microchip.com> To: <daniel.lezcano@linaro.org>, <tglx@linutronix.de> Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, Claudiu Beznea <claudiu.beznea@microchip.com> Subject: [PATCH v3 3/6] clocksource/drivers/timer-microchip-pit64b: use 5MHz for clockevent Date: Fri, 4 Mar 2022 15:35:58 +0200 [thread overview] Message-ID: <20220304133601.2404086-4-claudiu.beznea@microchip.com> (raw) In-Reply-To: <20220304133601.2404086-1-claudiu.beznea@microchip.com> Use 5MHz clock for clockevent timers. This increases timer's resolution. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> --- drivers/clocksource/timer-microchip-pit64b.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/clocksource/timer-microchip-pit64b.c b/drivers/clocksource/timer-microchip-pit64b.c index 790d2c9b42a7..abce83d2f00b 100644 --- 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; -- 2.32.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-03-04 13:35 UTC|newest] Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-03-04 13:35 [PATCH v3 0/6] clocksource/drivers/timer-microchip-pit64b: fixes and improvements Claudiu Beznea 2022-03-04 13:35 ` Claudiu Beznea 2022-03-04 13:35 ` [PATCH v3 1/6] clocksource/drivers/timer-microchip-pit64b: remove mmio selection Claudiu Beznea 2022-03-04 13:35 ` Claudiu Beznea 2022-03-14 9:28 ` [tip: timers/core] clocksource/drivers/timer-microchip-pit64b: Remove " tip-bot2 for Claudiu Beznea 2022-03-04 13:35 ` [PATCH v3 2/6] clocksource/drivers/timer-microchip-pit64b: use notrace Claudiu Beznea 2022-03-04 13:35 ` Claudiu Beznea 2022-03-14 9:28 ` [tip: timers/core] clocksource/drivers/timer-microchip-pit64b: Use notrace tip-bot2 for Claudiu Beznea 2022-03-04 13:35 ` Claudiu Beznea [this message] 2022-03-04 13:35 ` [PATCH v3 3/6] clocksource/drivers/timer-microchip-pit64b: use 5MHz for clockevent Claudiu Beznea 2022-03-14 9:28 ` [tip: timers/core] clocksource/drivers/timer-microchip-pit64b: Use " tip-bot2 for Claudiu Beznea 2022-03-04 13:35 ` [PATCH v3 4/6] clocksource/drivers/timer-microchip-pit64b: remove suspend/resume ops for ce Claudiu Beznea 2022-03-04 13:35 ` Claudiu Beznea 2022-03-04 13:36 ` [PATCH v3 5/6] clocksource/drivers/timer-microchip-pit64b: use mchp_pit64b_{suspend, resume} Claudiu Beznea 2022-03-04 13:36 ` Claudiu Beznea 2022-03-04 13:36 ` [PATCH v3 6/6] clocksource/drivers/timer-microchip-pit64b: fix compilation warnings Claudiu Beznea 2022-03-04 13:36 ` Claudiu Beznea 2022-03-04 19:46 ` [PATCH v3 0/6] clocksource/drivers/timer-microchip-pit64b: fixes and improvements Daniel Lezcano 2022-03-04 19:46 ` Daniel Lezcano 2022-03-07 12:17 ` Claudiu.Beznea 2022-03-07 12:17 ` Claudiu.Beznea
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