From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: tglx@linutronix.de
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Ludovic Desroches <ludovic.desroches@microchip.com>,
linux-kernel@vger.kernel.org (open list:CLOCKSOURCE,
CLOCKEVENT DRIVERS),
linux-arm-kernel@lists.infradead.org (moderated
list:ARM/Microchip (AT91) SoC support)
Subject: [PATCH 05/16] clocksource/drivers/timer-atmel-tcb: Rework 32khz clock selection
Date: Thu, 23 Jul 2020 17:26:25 +0200 [thread overview]
Message-ID: <20200723152639.639771-5-daniel.lezcano@linaro.org> (raw)
In-Reply-To: <20200723152639.639771-1-daniel.lezcano@linaro.org>
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
On all the supported SoCs, the slow clock is always ATMEL_TC_TIMER_CLOCK5,
avoid looking it up and pass it directly to setup_clkevents.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200710230813.1005150-6-alexandre.belloni@bootlin.com
---
drivers/clocksource/timer-atmel-tcb.c | 11 ++---------
1 file changed, 2 insertions(+), 9 deletions(-)
diff --git a/drivers/clocksource/timer-atmel-tcb.c b/drivers/clocksource/timer-atmel-tcb.c
index 7427b07495a8..b255a4a1a36b 100644
--- a/drivers/clocksource/timer-atmel-tcb.c
+++ b/drivers/clocksource/timer-atmel-tcb.c
@@ -346,7 +346,7 @@ static void __init tcb_setup_single_chan(struct atmel_tc *tc, int mck_divisor_id
writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
}
-static const u8 atmel_tcb_divisors[5] = { 2, 8, 32, 128, 0, };
+static const u8 atmel_tcb_divisors[] = { 2, 8, 32, 128 };
static const struct of_device_id atmel_tcb_of_match[] = {
{ .compatible = "atmel,at91rm9200-tcb", .data = (void *)16, },
@@ -362,7 +362,6 @@ static int __init tcb_clksrc_init(struct device_node *node)
u64 (*tc_sched_clock)(void);
u32 rate, divided_rate = 0;
int best_divisor_idx = -1;
- int clk32k_divisor_idx = -1;
int bits;
int i;
int ret;
@@ -416,12 +415,6 @@ static int __init tcb_clksrc_init(struct device_node *node)
unsigned divisor = atmel_tcb_divisors[i];
unsigned tmp;
- /* remember 32 KiHz clock for later */
- if (!divisor) {
- clk32k_divisor_idx = i;
- continue;
- }
-
tmp = rate / divisor;
pr_debug("TC: %u / %-3u [%d] --> %u\n", rate, divisor, i, tmp);
if (best_divisor_idx > 0) {
@@ -467,7 +460,7 @@ static int __init tcb_clksrc_init(struct device_node *node)
goto err_disable_t1;
/* channel 2: periodic and oneshot timer support */
- ret = setup_clkevents(&tc, clk32k_divisor_idx);
+ ret = setup_clkevents(&tc, ATMEL_TC_TIMER_CLOCK5);
if (ret)
goto err_unregister_clksrc;
--
2.25.1
next prev parent reply other threads:[~2020-07-23 15:27 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-23 15:24 [GIT PULL] timer drives for v5.9 Daniel Lezcano
2020-07-23 15:26 ` [PATCH 01/16] dt-bindings: atmel-tcb: convert bindings to json-schema Daniel Lezcano
2020-07-23 15:26 ` [PATCH 02/16] dt-bindings: microchip: atmel,at91rm9200-tcb: add sama5d2 compatible Daniel Lezcano
2020-07-23 15:26 ` [PATCH 03/16] ARM: dts: at91: sama5d2: add TCB GCLK Daniel Lezcano
2020-07-23 15:26 ` [PATCH 04/16] ARM: at91: add atmel tcb capabilities Daniel Lezcano
2020-07-23 15:26 ` Daniel Lezcano [this message]
2020-07-23 15:26 ` [PATCH 06/16] clocksource/drivers/timer-atmel-tcb: Fill tcb_config Daniel Lezcano
2020-07-23 15:26 ` [PATCH 07/16] clocksource/drivers/timer-atmel-tcb: Stop using the 32kHz for clockevents Daniel Lezcano
2020-07-23 15:26 ` [PATCH 08/16] clocksource/drivers/timer-atmel-tcb: Allow selecting first divider Daniel Lezcano
2020-07-23 15:26 ` [PATCH 09/16] clocksource/drivers/timer-atmel-tcb: Add sama5d2 support Daniel Lezcano
2020-07-23 15:26 ` [PATCH 10/16] clocksource/drivers/ingenic: Add high resolution timer support for SMP/SMT Daniel Lezcano
2020-07-23 15:26 ` [PATCH 11/16] clocksource/drivers/imx: Add support for i.MX TPM driver with ARM64 Daniel Lezcano
2020-07-23 15:26 ` [PATCH 12/16] clocksource/drivers/sh_cmt: Use "kHz" for kilohertz Daniel Lezcano
2020-07-23 15:26 ` [PATCH 13/16] clocksource/drivers/nomadik-mtu: Handle 32kHz clock Daniel Lezcano
2020-07-23 15:26 ` [PATCH 14/16] clocksource/drivers: Replace HTTP links with HTTPS ones Daniel Lezcano
2020-07-23 15:26 ` [PATCH 15/16] dt-bindings: timer: Add Ingenic X1000 OST bindings Daniel Lezcano
2020-07-23 15:26 ` [PATCH 16/16] clocksource/drivers/ingenic: Add support for the Ingenic X1000 OST Daniel Lezcano
2020-07-27 14:04 ` [PATCH 01/16] dt-bindings: atmel-tcb: convert bindings to json-schema Lee Jones
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