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ARM: davinci: add device tree support to timer

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This adds device tree support to the davinci timer so that when clocks
are moved to device tree, the timer will still work.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
David Lechner 2018-05-18 11:48:27 -05:00 • committed by Sekhar Nori
parent 88ff663d50
commit 62604824d2
2 changed files with 16 additions and 0 deletions
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1
arch/arm/mach-davinci/Kconfig
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@ -59,6 +59,7 @@ config MACH_DA8XX_DT
default y default y
depends on ARCH_DAVINCI_DA850 depends on ARCH_DAVINCI_DA850
select PINCTRL select PINCTRL
select TIMER_OF
help help
Say y here to include support for TI DaVinci DA850 based using Say y here to include support for TI DaVinci DA850 based using
Flattened Device Tree. More information at Documentation/devicetree Flattened Device Tree. More information at Documentation/devicetree

15
arch/arm/mach-davinci/time.c
View file

@ -17,6 +17,7 @@
#include <linux/io.h> #include <linux/io.h>
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/err.h> #include <linux/err.h>
#include <linux/of.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/sched_clock.h> #include <linux/sched_clock.h>
@ -397,3 +398,17 @@ void __init davinci_timer_init(struct clk *timer_clk)
for (i=0; i< ARRAY_SIZE(timers); i++) for (i=0; i< ARRAY_SIZE(timers); i++)
timer32_config(&timers[i]); timer32_config(&timers[i]);
} }
static int __init of_davinci_timer_init(struct device_node *np)
{
struct clk *clk;
clk = of_clk_get(np, 0);
if (IS_ERR(clk))
return PTR_ERR(clk);
davinci_timer_init(clk);
return 0;
}
TIMER_OF_DECLARE(davinci_timer, "ti,da830-timer", of_davinci_timer_init);