diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2012-08-20 00:51:45 (GMT) |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2012-09-03 01:31:50 (GMT) |
| commit | eeca6e604032af8336baafef84144dd47f5a0f99 (patch) | |
| tree | cff564b1bf3de3ead8186fac9dec332a0cf3a170 | |
| parent | 0b76c5412146c1c9e8aef495d2926f31351bc3c0 (diff) | |
| download | linux-eeca6e604032af8336baafef84144dd47f5a0f99.tar.xz | |
ARM: mxs: retrieve timer irq from device tree
Rather than using the static timer irq definition, we should retrieve
timer irq from device tree for better.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
| -rw-r--r-- | arch/arm/boot/dts/imx23.dtsi | 3 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx28.dtsi | 3 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/include/mach/common.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/timer.c | 13 | ||||
| -rw-r--r-- | drivers/clk/mxs/clk-imx23.c | 2 | ||||
| -rw-r--r-- | drivers/clk/mxs/clk-imx28.c | 2 |
6 files changed, 19 insertions, 6 deletions
diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi index e613831..573066b 100644 --- a/arch/arm/boot/dts/imx23.dtsi +++ b/arch/arm/boot/dts/imx23.dtsi @@ -389,8 +389,9 @@ }; timrot@80068000 { + compatible = "fsl,imx23-timrot", "fsl,timrot"; reg = <0x80068000 0x2000>; - status = "disabled"; + interrupts = <28 29 30 31>; }; auart0: serial@8006c000 { diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi index 3fa6d19..183fc65 100644 --- a/arch/arm/boot/dts/imx28.dtsi +++ b/arch/arm/boot/dts/imx28.dtsi @@ -683,8 +683,9 @@ }; timrot@80068000 { + compatible = "fsl,imx28-timrot", "fsl,timrot"; reg = <0x80068000 0x2000>; - status = "disabled"; + interrupts = <48 49 50 51>; }; auart0: serial@8006a000 { diff --git a/arch/arm/mach-mxs/include/mach/common.h b/arch/arm/mach-mxs/include/mach/common.h index de6c7ba..a7416c8 100644 --- a/arch/arm/mach-mxs/include/mach/common.h +++ b/arch/arm/mach-mxs/include/mach/common.h @@ -13,7 +13,7 @@ extern const u32 *mxs_get_ocotp(void); extern int mxs_reset_block(void __iomem *); -extern void mxs_timer_init(int); +extern void mxs_timer_init(void); extern void mxs_restart(char, const char *); extern int mxs_saif_clkmux_select(unsigned int clkmux); diff --git a/arch/arm/mach-mxs/timer.c b/arch/arm/mach-mxs/timer.c index 02d36de..7c37926 100644 --- a/arch/arm/mach-mxs/timer.c +++ b/arch/arm/mach-mxs/timer.c @@ -25,6 +25,8 @@ #include <linux/irq.h> #include <linux/clockchips.h> #include <linux/clk.h> +#include <linux/of.h> +#include <linux/of_irq.h> #include <asm/mach/time.h> #include <mach/mxs.h> @@ -244,9 +246,17 @@ static int __init mxs_clocksource_init(struct clk *timer_clk) return 0; } -void __init mxs_timer_init(int irq) +void __init mxs_timer_init(void) { + struct device_node *np; struct clk *timer_clk; + int irq; + + np = of_find_compatible_node(NULL, NULL, "fsl,timrot"); + if (!np) { + pr_err("%s: failed find timrot node\n", __func__); + return; + } timer_clk = clk_get_sys("timrot", NULL); if (IS_ERR(timer_clk)) { @@ -295,5 +305,6 @@ void __init mxs_timer_init(int irq) mxs_clockevent_init(timer_clk); /* Make irqs happen */ + irq = irq_of_parse_and_map(np, 0); setup_irq(irq, &mxs_timer_irq); } diff --git a/drivers/clk/mxs/clk-imx23.c b/drivers/clk/mxs/clk-imx23.c index 844043a..e0dc3f8 100644 --- a/drivers/clk/mxs/clk-imx23.c +++ b/drivers/clk/mxs/clk-imx23.c @@ -200,7 +200,7 @@ int __init mx23_clocks_init(void) for (i = 0; i < ARRAY_SIZE(clks_init_on); i++) clk_prepare_enable(clks[clks_init_on[i]]); - mxs_timer_init(MX23_INT_TIMER0); + mxs_timer_init(); return 0; } diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c index e3aab67..9df864d 100644 --- a/drivers/clk/mxs/clk-imx28.c +++ b/drivers/clk/mxs/clk-imx28.c @@ -337,7 +337,7 @@ int __init mx28_clocks_init(void) for (i = 0; i < ARRAY_SIZE(clks_init_on); i++) clk_prepare_enable(clks[clks_init_on[i]]); - mxs_timer_init(MX28_INT_TIMER0); + mxs_timer_init(); return 0; } |