AcoSail/kernel_optimize_test
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clocksource:sirf: remove the hardcode for the clk of timers

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Nobody want to know the connection between io clk and timer clk,
so exposing this information to timer module is not reasonable.
this patch moves to define the timers' clk in dt.

Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
This commit is contained in:
Zhiwu Song 2014-05-05 19:30:04 +08:00 committed by Barry Song
parent 7caf685201
commit c7cff54d59
4 changed files with 6 additions and 9 deletions
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1
arch/arm/boot/dts/atlas6.dtsi
View File

@ -195,6 +195,7 @@ timer@b0020000 {
compatible = "sirf,prima2-tick";
reg = <0xb0020000 0x1000>;
interrupts = <0>;
clocks = <&clks 11>;
};
nand@b0030000 {

1
arch/arm/boot/dts/prima2.dtsi
View File

@ -201,6 +201,7 @@ timer@b0020000 {
compatible = "sirf,prima2-tick";
reg = <0xb0020000 0x1000>;
interrupts = <0>;
clocks = <&clks 11>;
};
nand@b0030000 {

8
drivers/clocksource/timer-marco.c
View File

@ -252,15 +252,13 @@ static void __init sirfsoc_clockevent_init(void)
}
/* initialize the kernel jiffy timer source */
static void __init sirfsoc_marco_timer_init(void)
static void __init sirfsoc_marco_timer_init(struct device_node *np)
{
unsigned long rate;
u32 timer_div;
struct clk *clk;
/* timer's input clock is io clock */
clk = clk_get_sys("io", NULL);
clk = of_clk_get(np, 0);
BUG_ON(IS_ERR(clk));
rate = clk_get_rate(clk);
@ -303,6 +301,6 @@ static void __init sirfsoc_of_timer_init(struct device_node *np)
if (!sirfsoc_timer1_irq.irq)
panic("No irq passed for timer1 via DT\n");
sirfsoc_marco_timer_init();
sirfsoc_marco_timer_init(np);
}
CLOCKSOURCE_OF_DECLARE(sirfsoc_marco_timer, "sirf,marco-tick", sirfsoc_of_timer_init );

5
drivers/clocksource/timer-prima2.c
View File

@ -198,11 +198,8 @@ static void __init sirfsoc_prima2_timer_init(struct device_node *np)
unsigned long rate;
struct clk *clk;
/* timer's input clock is io clock */
clk = clk_get_sys("io", NULL);
clk = of_clk_get(np, 0);
BUG_ON(IS_ERR(clk));
rate = clk_get_rate(clk);
BUG_ON(rate < PRIMA2_CLOCK_FREQ);