From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: kamel.bouhara@bootlin.com,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 9/9] clocksource/drivers/timer-atmel-tcb: add sama5d2 support
Date: Sat, 11 Jul 2020 01:08:13 +0200 [thread overview]
Message-ID: <20200710230813.1005150-10-alexandre.belloni@bootlin.com> (raw)
In-Reply-To: <20200710230813.1005150-1-alexandre.belloni@bootlin.com>
The first divisor for the sama5d2 is actually the gclk selector. Because
the currently remaining divisors are fitting the use case, currently ensure
it is skipped.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/clocksource/timer-atmel-tcb.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/clocksource/timer-atmel-tcb.c b/drivers/clocksource/timer-atmel-tcb.c
index 7fea134650fc..787dbebbb432 100644
--- a/drivers/clocksource/timer-atmel-tcb.c
+++ b/drivers/clocksource/timer-atmel-tcb.c
@@ -359,9 +359,15 @@ static struct atmel_tcb_config tcb_sam9x5_config = {
.counter_width = 32,
};
+static struct atmel_tcb_config tcb_sama5d2_config = {
+ .counter_width = 32,
+ .has_gclk = 1,
+};
+
static const struct of_device_id atmel_tcb_of_match[] = {
{ .compatible = "atmel,at91rm9200-tcb", .data = &tcb_rm9200_config, },
{ .compatible = "atmel,at91sam9x5-tcb", .data = &tcb_sam9x5_config, },
+ { .compatible = "atmel,sama5d2-tcb", .data = &tcb_sama5d2_config, },
{ /* sentinel */ }
};
@@ -426,7 +432,10 @@ static int __init tcb_clksrc_init(struct device_node *node)
/* How fast will we be counting? Pick something over 5 MHz. */
rate = (u32) clk_get_rate(t0_clk);
- for (i = 0; i < ARRAY_SIZE(atmel_tcb_divisors); i++) {
+ i = 0;
+ if (tc.tcb_config->has_gclk)
+ i = 1;
+ for (; i < ARRAY_SIZE(atmel_tcb_divisors); i++) {
unsigned divisor = atmel_tcb_divisors[i];
unsigned tmp;
--
2.26.2
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next prev parent reply other threads:[~2020-07-10 23:10 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 23:08 [PATCH v6 0/9] clocksource/drivers/timer-atmel-tcb: add sama5d2 support Alexandre Belloni
2020-07-10 23:08 ` [PATCH v6 1/9] dt-bindings: atmel-tcb: convert bindings to json-schema Alexandre Belloni
2020-07-10 23:08 ` [PATCH v6 2/9] dt-bindings: microchip: atmel, at91rm9200-tcb: add sama5d2 compatible Alexandre Belloni
2020-07-10 23:08 ` [PATCH v6 3/9] ARM: dts: at91: sama5d2: add TCB GCLK Alexandre Belloni
2020-07-10 23:08 ` [PATCH v6 4/9] ARM: at91: add atmel tcb capabilities Alexandre Belloni
2020-07-10 23:08 ` [PATCH v6 5/9] clocksource/drivers/timer-atmel-tcb: rework 32khz clock selection Alexandre Belloni
2020-07-10 23:08 ` [PATCH v6 6/9] clocksource/drivers/timer-atmel-tcb: fill tcb_config Alexandre Belloni
2020-07-10 23:08 ` [PATCH v6 7/9] clocksource/drivers/timer-atmel-tcb: stop using the 32kHz for clockevents Alexandre Belloni
2020-07-10 23:08 ` [PATCH v6 8/9] clocksource/drivers/timer-atmel-tcb: allow selecting first divider Alexandre Belloni
2020-07-10 23:08 ` Alexandre Belloni [this message]
2020-07-17 4:11 ` [PATCH v6 0/9] clocksource/drivers/timer-atmel-tcb: add sama5d2 support Daniel Lezcano
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