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ARM: SP804: make Integrator/CP timer pick clock from DT 

This modifies the SP804 driver so that the clock will be taken
from the device tree node for the timer.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Rob Herring <rob.herring@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Linus Walleij 2014-01-10 15:54:34 +01:00
parent b792985226
commit 9cf3138059
1 changed files with 6 additions and 2 deletions
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8
arch/arm/common/timer-sp.c
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@ -271,10 +271,14 @@ static void __init integrator_cp_of_init(struct device_node *np)
void __iomem *base;
int irq;
const char *name = of_get_property(np, "compatible", NULL);
struct clk *clk;
base = of_iomap(np, 0);
if (WARN_ON(!base))
return;
clk = of_clk_get(np, 0);
if (WARN_ON(IS_ERR(clk)))
return;
/* Ensure timer is disabled */
writel(0, base + TIMER_CTRL);
@ -283,13 +287,13 @@ static void __init integrator_cp_of_init(struct device_node *np)
goto err;
if (!init_count)
sp804_clocksource_init(base, name);
__sp804_clocksource_and_sched_clock_init(base, name, clk, 0);
else {
irq = irq_of_parse_and_map(np, 0);
if (irq <= 0)
goto err;
sp804_clockevents_init(base, irq, name);
__sp804_clockevents_init(base, irq, clk, name);
}
init_count++;