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Message-Id: <20200529232749.299627-10-alexandre.belloni@bootlin.com>
Date: Sat, 30 May 2020 01:27:49 +0200
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
kamel.bouhara@...tlin.com, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH v4 9/9] clocksource/drivers/timer-atmel-tcb: add sama5d2 support
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@...tlin.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 ccb77b9cb489..e373b02d509a 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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