ARM: i.MX: Use of_clk_get_by_name() for timer clocks for DT case.
Use of_clk_get_by_name() for timer clocks for DT case.
This patch eliminates a lot of unneeded clk_register_clkdev()
calls for GPT.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
diff --git a/arch/arm/mach-imx/time.c b/arch/arm/mach-imx/time.c
index bed081e..2d96051 100644
--- a/arch/arm/mach-imx/time.c
+++ b/arch/arm/mach-imx/time.c
@@ -290,23 +290,20 @@
return 0;
}
-void __init mxc_timer_init(void __iomem *base, int irq)
+static void __init _mxc_timer_init(void __iomem *base, int irq,
+ struct clk *clk_per, struct clk *clk_ipg)
{
uint32_t tctl_val;
- struct clk *timer_clk;
- struct clk *timer_ipg_clk;
- timer_clk = clk_get_sys("imx-gpt.0", "per");
- if (IS_ERR(timer_clk)) {
+ if (IS_ERR(clk_per)) {
pr_err("i.MX timer: unable to get clk\n");
return;
}
- timer_ipg_clk = clk_get_sys("imx-gpt.0", "ipg");
- if (!IS_ERR(timer_ipg_clk))
- clk_prepare_enable(timer_ipg_clk);
+ if (!IS_ERR(clk_ipg))
+ clk_prepare_enable(clk_ipg);
- clk_prepare_enable(timer_clk);
+ clk_prepare_enable(clk_per);
timer_base = base;
@@ -325,15 +322,24 @@
__raw_writel(tctl_val, timer_base + MXC_TCTL);
/* init and register the timer to the framework */
- mxc_clocksource_init(timer_clk);
- mxc_clockevent_init(timer_clk);
+ mxc_clocksource_init(clk_per);
+ mxc_clockevent_init(clk_per);
/* Make irqs happen */
setup_irq(irq, &mxc_timer_irq);
}
+void __init mxc_timer_init(void __iomem *base, int irq)
+{
+ struct clk *clk_per = clk_get_sys("imx-gpt.0", "per");
+ struct clk *clk_ipg = clk_get_sys("imx-gpt.0", "ipg");
+
+ _mxc_timer_init(base, irq, clk_per, clk_ipg);
+}
+
void __init mxc_timer_init_dt(struct device_node *np)
{
+ struct clk *clk_per, *clk_ipg;
void __iomem *base;
int irq;
@@ -341,5 +347,8 @@
WARN_ON(!base);
irq = irq_of_parse_and_map(np, 0);
- mxc_timer_init(base, irq);
+ clk_per = of_clk_get_by_name(np, "per");
+ clk_ipg = of_clk_get_by_name(np, "ipg");
+
+ _mxc_timer_init(base, irq, clk_per, clk_ipg);
}