ARM: at91/tc: add device tree support to atmel_tclib
Device tree support added to atmel_tclib: the generic Timer Counter
library. This is used by the clocksource/clockevent driver tcb_clksrc.
The current DT enabled platforms are also modified to use it:
- .dtsi files are modified to add Timer Counter Block entries
- alias are created to allow identification of each block
- clkdev lookup tables are added for clocks identification.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index c450cb3..e82a5ae 100644
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -699,8 +699,25 @@
.num_resources = ARRAY_SIZE(tcb1_resources),
};
+#if defined(CONFIG_OF)
+static struct of_device_id tcb_ids[] = {
+ { .compatible = "atmel,at91rm9200-tcb" },
+ { /*sentinel*/ }
+};
+#endif
+
static void __init at91_add_device_tc(void)
{
+#if defined(CONFIG_OF)
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, tcb_ids);
+ if (np) {
+ of_node_put(np);
+ return;
+ }
+#endif
+
platform_device_register(&at91sam9260_tcb0_device);
platform_device_register(&at91sam9260_tcb1_device);
}