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-rw-r--r--Documentation/devicetree/bindings/arm/spear-timer.txt18
-rw-r--r--arch/arm/boot/dts/spear3xx.dtsi6
-rw-r--r--arch/arm/boot/dts/spear600.dtsi6
-rw-r--r--arch/arm/mach-spear3xx/include/mach/generic.h2
-rw-r--r--arch/arm/mach-spear3xx/include/mach/irqs.h1
-rw-r--r--arch/arm/mach-spear3xx/include/mach/spear.h1
-rw-r--r--arch/arm/mach-spear3xx/spear3xx.c2
-rw-r--r--arch/arm/mach-spear6xx/include/mach/generic.h2
-rw-r--r--arch/arm/mach-spear6xx/include/mach/irqs.h3
-rw-r--r--arch/arm/mach-spear6xx/include/mach/spear.h1
-rw-r--r--arch/arm/mach-spear6xx/spear6xx.c2
-rw-r--r--arch/arm/plat-spear/time.c31
12 files changed, 56 insertions, 19 deletions
diff --git a/Documentation/devicetree/bindings/arm/spear-timer.txt b/Documentation/devicetree/bindings/arm/spear-timer.txt
new file mode 100644
index 00000000000..c0017221cf5
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/spear-timer.txt
@@ -0,0 +1,18 @@
+* SPEAr ARM Timer
+
+** Timer node required properties:
+
+- compatible : Should be:
+ "st,spear-timer"
+- reg: Address range of the timer registers
+- interrupt-parent: Should be the phandle for the interrupt controller
+ that services interrupts for this device
+- interrupt: Should contain the timer interrupt number
+
+Example:
+
+ timer@f0000000 {
+ compatible = "st,spear-timer";
+ reg = <0xf0000000 0x400>;
+ interrupts = <2>;
+ };
diff --git a/arch/arm/boot/dts/spear3xx.dtsi b/arch/arm/boot/dts/spear3xx.dtsi
index 0ae7c8e8631..91072553963 100644
--- a/arch/arm/boot/dts/spear3xx.dtsi
+++ b/arch/arm/boot/dts/spear3xx.dtsi
@@ -139,6 +139,12 @@
interrupts = <12>;
status = "disabled";
};
+
+ timer@f0000000 {
+ compatible = "st,spear-timer";
+ reg = <0xf0000000 0x400>;
+ interrupts = <2>;
+ };
};
};
};
diff --git a/arch/arm/boot/dts/spear600.dtsi b/arch/arm/boot/dts/spear600.dtsi
index d777e3a6f17..089f0a42c50 100644
--- a/arch/arm/boot/dts/spear600.dtsi
+++ b/arch/arm/boot/dts/spear600.dtsi
@@ -177,6 +177,12 @@
interrupts = <28>;
status = "disabled";
};
+
+ timer@f0000000 {
+ compatible = "st,spear-timer";
+ reg = <0xf0000000 0x400>;
+ interrupts = <16>;
+ };
};
};
};
diff --git a/arch/arm/mach-spear3xx/include/mach/generic.h b/arch/arm/mach-spear3xx/include/mach/generic.h
index e4f4d721cda..efb69357429 100644
--- a/arch/arm/mach-spear3xx/include/mach/generic.h
+++ b/arch/arm/mach-spear3xx/include/mach/generic.h
@@ -28,7 +28,7 @@ extern struct pl022_ssp_controller pl022_plat_data;
extern struct pl08x_platform_data pl080_plat_data;
/* Add spear3xx family function declarations here */
-void __init spear_setup_timer(resource_size_t base, int irq);
+void __init spear_setup_of_timer(void);
void __init spear3xx_map_io(void);
void __init spear3xx_dt_init_irq(void);
diff --git a/arch/arm/mach-spear3xx/include/mach/irqs.h b/arch/arm/mach-spear3xx/include/mach/irqs.h
index 319620a1afb..51bd62a0254 100644
--- a/arch/arm/mach-spear3xx/include/mach/irqs.h
+++ b/arch/arm/mach-spear3xx/include/mach/irqs.h
@@ -16,7 +16,6 @@
/* FIXME: probe all these from DT */
#define SPEAR3XX_IRQ_INTRCOMM_RAS_ARM 1
-#define SPEAR3XX_IRQ_CPU_GPT1_1 2
#define SPEAR3XX_IRQ_GEN_RAS_1 28
#define SPEAR3XX_IRQ_GEN_RAS_2 29
#define SPEAR3XX_IRQ_GEN_RAS_3 30
diff --git a/arch/arm/mach-spear3xx/include/mach/spear.h b/arch/arm/mach-spear3xx/include/mach/spear.h
index 6d4dadc6763..04da906b0d4 100644
--- a/arch/arm/mach-spear3xx/include/mach/spear.h
+++ b/arch/arm/mach-spear3xx/include/mach/spear.h
@@ -26,7 +26,6 @@
/* ML1 - Multi Layer CPU Subsystem */
#define SPEAR3XX_ICM3_ML1_2_BASE UL(0xF0000000)
#define VA_SPEAR6XX_ML_CPU_BASE UL(0xF0000000)
-#define SPEAR3XX_CPU_TMR_BASE UL(0xF0000000)
/* ICM3 - Basic Subsystem */
#define SPEAR3XX_ICM3_SMI_CTRL_BASE UL(0xFC000000)
diff --git a/arch/arm/mach-spear3xx/spear3xx.c b/arch/arm/mach-spear3xx/spear3xx.c
index bbb11efa605..25c6c67d5b0 100644
--- a/arch/arm/mach-spear3xx/spear3xx.c
+++ b/arch/arm/mach-spear3xx/spear3xx.c
@@ -534,7 +534,7 @@ static void __init spear3xx_timer_init(void)
clk_put(gpt_clk);
clk_put(pclk);
- spear_setup_timer(SPEAR3XX_CPU_TMR_BASE, SPEAR3XX_IRQ_CPU_GPT1_1);
+ spear_setup_of_timer();
}
struct sys_timer spear3xx_timer = {
diff --git a/arch/arm/mach-spear6xx/include/mach/generic.h b/arch/arm/mach-spear6xx/include/mach/generic.h
index 7167fd331d8..65514b15937 100644
--- a/arch/arm/mach-spear6xx/include/mach/generic.h
+++ b/arch/arm/mach-spear6xx/include/mach/generic.h
@@ -16,7 +16,7 @@
#include <linux/init.h>
-void __init spear_setup_timer(resource_size_t base, int irq);
+void __init spear_setup_of_timer(void);
void spear_restart(char, const char *);
void __init spear6xx_clk_init(void);
diff --git a/arch/arm/mach-spear6xx/include/mach/irqs.h b/arch/arm/mach-spear6xx/include/mach/irqs.h
index 2b735389e74..37a5c411a86 100644
--- a/arch/arm/mach-spear6xx/include/mach/irqs.h
+++ b/arch/arm/mach-spear6xx/include/mach/irqs.h
@@ -16,9 +16,6 @@
/* IRQ definitions */
/* VIC 1 */
-/* FIXME: probe this from DT */
-#define IRQ_CPU_GPT1_1 16
-
#define IRQ_VIC_END 64
/* GPIO pins virtual irqs */
diff --git a/arch/arm/mach-spear6xx/include/mach/spear.h b/arch/arm/mach-spear6xx/include/mach/spear.h
index d278ed047a5..cb8ed2f4dc8 100644
--- a/arch/arm/mach-spear6xx/include/mach/spear.h
+++ b/arch/arm/mach-spear6xx/include/mach/spear.h
@@ -25,7 +25,6 @@
/* ML-1, 2 - Multi Layer CPU Subsystem */
#define SPEAR6XX_ML_CPU_BASE UL(0xF0000000)
#define VA_SPEAR6XX_ML_CPU_BASE UL(0xF0000000)
-#define SPEAR6XX_CPU_TMR_BASE UL(0xF0000000)
/* ICM3 - Basic Subsystem */
#define SPEAR6XX_ICM3_SMI_CTRL_BASE UL(0xFC000000)
diff --git a/arch/arm/mach-spear6xx/spear6xx.c b/arch/arm/mach-spear6xx/spear6xx.c
index de194dbb837..7ae4d5be6cb 100644
--- a/arch/arm/mach-spear6xx/spear6xx.c
+++ b/arch/arm/mach-spear6xx/spear6xx.c
@@ -448,7 +448,7 @@ static void __init spear6xx_timer_init(void)
clk_put(gpt_clk);
clk_put(pclk);
- spear_setup_timer(SPEAR6XX_CPU_TMR_BASE, IRQ_CPU_GPT1_1);
+ spear_setup_of_timer();
}
struct sys_timer spear6xx_timer = {
diff --git a/arch/arm/plat-spear/time.c b/arch/arm/plat-spear/time.c
index a3164d1647f..9a378987bbb 100644
--- a/arch/arm/plat-spear/time.c
+++ b/arch/arm/plat-spear/time.c
@@ -18,6 +18,8 @@
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
#include <linux/time.h>
#include <linux/irq.h>
#include <asm/mach/time.h>
@@ -197,19 +199,32 @@ static void __init spear_clockevent_init(int irq)
setup_irq(irq, &spear_timer_irq);
}
-void __init spear_setup_timer(resource_size_t base, int irq)
+const static struct of_device_id timer_of_match[] __initconst = {
+ { .compatible = "st,spear-timer", },
+ { },
+};
+
+void __init spear_setup_of_timer(void)
{
- int ret;
+ struct device_node *np;
+ int irq, ret;
+
+ np = of_find_matching_node(NULL, timer_of_match);
+ if (!np) {
+ pr_err("%s: No timer passed via DT\n", __func__);
+ return;
+ }
- if (!request_mem_region(base, SZ_1K, "gpt0")) {
- pr_err("%s:cannot get IO addr\n", __func__);
+ irq = irq_of_parse_and_map(np, 0);
+ if (!irq) {
+ pr_err("%s: No irq passed for timer via DT\n", __func__);
return;
}
- gpt_base = ioremap(base, SZ_1K);
+ gpt_base = of_iomap(np, 0);
if (!gpt_base) {
- pr_err("%s:ioremap failed for gpt\n", __func__);
- goto err_mem;
+ pr_err("%s: of iomap failed\n", __func__);
+ return;
}
gpt_clk = clk_get_sys("gpt0", NULL);
@@ -233,6 +248,4 @@ err_clk:
clk_put(gpt_clk);
err_iomap:
iounmap(gpt_base);
-err_mem:
- release_mem_region(base, SZ_1K);
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-29 14:58:05 +0000