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authorAlexandre Belloni <alexandre.belloni@bootlin.com>2020-07-11 02:08:13 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-07-11 19:58:24 +0300
commit467ae18aa057c44417afc92896879c2fb37a8b65 (patch)
tree4bcd0836ea4ddb74ab8cd3184f8bdd52f4ba3621 /drivers/clocksource
parent501465d5d7af63af5942cf6af783952bdd757c52 (diff)
downloadlinux-467ae18aa057c44417afc92896879c2fb37a8b65.tar.xz
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@bootlin.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200710230813.1005150-10-alexandre.belloni@bootlin.com
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/timer-atmel-tcb.c11
1 files changed, 10 insertions, 1 deletions
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;