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Commit cfda5901 authored by Dinh Nguyen's avatar Dinh Nguyen Committed by Arnd Bergmann
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clocksource: dw_apb_timer: Add common DTS glue for dw_apb_timer 



Make a common device tree glue for clocksource/dw_apb_timer.
Move mach-picoxcell/time.c to be a generic device tree application
of the dw_apb_timer.

Configure mach-picoxcell to use the dw_apb_timer_of device tree
implementation in drivers/clocksource.

Signed-off-by: default avatarPavel Machek <pavel@denx.de>
Signed-off-by: default avatarDinh Nguyen <dinguyen@altera.com>
Acked-by: default avatarJamie Iles <jamie@jamieiles.com>
Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent bd0a521e

Documentation/devicetree/bindings/rtc/dw-apb.txt

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+25 −0
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* Designware APB timer



Required properties:

- compatible: "snps,dw-apb-timer-sp" or "snps,dw-apb-timer-osc"

- reg: physical base address of the controller and length of memory mapped

  region.

- interrupts: IRQ line for the timer.

- clock-frequency: The frequency in HZ of the timer.

- clock-freq: For backwards compatibility with picoxcell



Example:



		timer1: timer@ffc09000 {

				compatible = "snps,dw-apb-timer-sp";

				interrupts = <0 168 4>;

				clock-frequency = <200000000>;

				reg = <0xffc09000 0x1000>;

			};



		timer2: timer@ffd00000 {

				compatible = "snps,dw-apb-timer-osc";

				interrupts = <0 169 4>;

				clock-frequency = <200000000>;

				reg = <0xffd00000 0x1000>;

			};

arch/arm/Kconfig

+1 −0
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@@ -658,6 +658,7 @@ config ARCH_PICOXCELL 
	select ARM_VIC

	select CPU_V6K

	select DW_APB_TIMER

	select DW_APB_TIMER_OF

	select GENERIC_CLOCKEVENTS

	select GENERIC_GPIO

	select HAVE_TCM

arch/arm/mach-picoxcell/Makefile

+0 −1
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obj-y	:= common.o
 
obj-y	+= time.o

arch/arm/mach-picoxcell/common.c

+2 −1
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@@ -14,6 +14,7 @@ 
#include <linux/of_address.h>

#include <linux/of_irq.h>

#include <linux/of_platform.h>

#include <linux/dw_apb_timer.h>



#include <asm/mach/arch.h>

#include <asm/hardware/vic.h>
@@ -97,7 +98,7 @@ DT_MACHINE_START(PICOXCELL, "Picochip picoXcell") 
	.nr_irqs	= NR_IRQS_LEGACY,

	.init_irq	= picoxcell_init_irq,

	.handle_irq	= vic_handle_irq,

	.timer		= &picoxcell_timer,

	.timer		= &dw_apb_timer,

	.init_machine	= picoxcell_init_machine,

	.dt_compat	= picoxcell_dt_match,

	.restart	= picoxcell_wdt_restart,

arch/arm/mach-picoxcell/common.h

+1 −1
Original line number Diff line number Diff line
@@ -12,6 +12,6 @@ 


#include <asm/mach/time.h>



extern struct sys_timer picoxcell_timer;

extern struct sys_timer dw_apb_timer;



#endif /* __PICOXCELL_COMMON_H__ */