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Commit 82015c4e authored by Jean-Christophe PLAGNIOL-VILLARD's avatar Jean-Christophe PLAGNIOL-VILLARD
Browse files

ARM: at91: add Shutdown Controller (SHDWC) DT support 



Use a string to specific the wakeup mode to make it more readable.

Add the Real-time Clock Wake-up support too for sam9g45 and sam9x5.
Add AT91_SHDW_CPTWK0_MAX to specific the Max of the Wakeup Counter.

Signed-off-by: default avatarJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: default avatarRob Herring <rob.herring@calxeda.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
parent a7776ec6

Documentation/devicetree/bindings/arm/atmel-at91.txt

+29 −0
Original line number Original line Diff line number Diff line
@@ -61,3 +61,32 @@ Examples: 
		reg = <0xffffe400 0x200

		reg = <0xffffe400 0x200

		       0xffffe600 0x200>;

		       0xffffe600 0x200>;

	};

	};



SHDWC Shutdown Controller



required properties:

- compatible: Should be "atmel,<chip>-shdwc".

  <chip> can be "at91sam9260", "at91sam9rl" or "at91sam9x5".

- reg: Should contain registers location and length



optional properties:

- atmel,wakeup-mode: String, operation mode of the wakeup mode.

  Supported values are: "none", "high", "low", "any".

- atmel,wakeup-counter: Counter on Wake-up 0 (between 0x0 and 0xf).



optional at91sam9260 properties:

- atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.



optional at91sam9rl properties:

- atmel,wakeup-rtc-timer: boolean to enable Real-time Clock Wake-up.

- atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.



optional at91sam9x5 properties:

- atmel,wakeup-rtc-timer: boolean to enable Real-time Clock Wake-up.



Example:



	rstc@fffffd00 {

		compatible = "atmel,at91sam9260-rstc";

		reg = <0xfffffd00 0x10>;

	};

arch/arm/boot/dts/at91sam9g20.dtsi

+5 −0
Original line number Original line Diff line number Diff line
@@ -74,6 +74,11 @@ 
				reg = <0xfffffd00 0x10>;

				reg = <0xfffffd00 0x10>;

			};

			};





			shdwc@fffffd10 {

				compatible = "atmel,at91sam9260-shdwc";

				reg = <0xfffffd10 0x10>;

			};



			pit: timer@fffffd30 {

			pit: timer@fffffd30 {

				compatible = "atmel,at91sam9260-pit";

				compatible = "atmel,at91sam9260-pit";

				reg = <0xfffffd30 0xf>;

				reg = <0xfffffd30 0xf>;

arch/arm/boot/dts/at91sam9g45.dtsi

+5 −0
Original line number Original line Diff line number Diff line
@@ -83,6 +83,11 @@ 
			};

			};









			shdwc@fffffd10 {

				compatible = "atmel,at91sam9rl-shdwc";

				reg = <0xfffffd10 0x10>;

			};



			tcb0: timer@fff7c000 {

			tcb0: timer@fff7c000 {

				compatible = "atmel,at91rm9200-tcb";

				compatible = "atmel,at91rm9200-tcb";

				reg = <0xfff7c000 0x100>;

				reg = <0xfff7c000 0x100>;

arch/arm/boot/dts/at91sam9x5.dtsi

+5 −0
Original line number Original line Diff line number Diff line
@@ -73,6 +73,11 @@ 
				reg = <0xfffffe00 0x10>;

				reg = <0xfffffe00 0x10>;

			};

			};





			shdwc@fffffe10 {

				compatible = "atmel,at91sam9x5-shdwc";

				reg = <0xfffffe10 0x10>;

			};



			pit: timer@fffffe30 {

			pit: timer@fffffe30 {

				compatible = "atmel,at91sam9260-pit";

				compatible = "atmel,at91sam9260-pit";

				reg = <0xfffffe30 0xf>;

				reg = <0xfffffe30 0xf>;

arch/arm/mach-at91/include/mach/at91_shdwc.h

+3 −1
Original line number Original line Diff line number Diff line
@@ -36,9 +36,11 @@ extern void __iomem *at91_shdwc_base; 
#define			AT91_SHDW_WKMODE0_HIGH		1

#define			AT91_SHDW_WKMODE0_HIGH		1

#define			AT91_SHDW_WKMODE0_LOW		2

#define			AT91_SHDW_WKMODE0_LOW		2

#define			AT91_SHDW_WKMODE0_ANYLEVEL	3

#define			AT91_SHDW_WKMODE0_ANYLEVEL	3

#define		AT91_SHDW_CPTWK0	(0xf << 4)		/* Counter On Wake Up 0 */

#define		AT91_SHDW_CPTWK0_MAX	0xf			/* Maximum Counter On Wake Up 0 */

#define		AT91_SHDW_CPTWK0	(AT91_SHDW_CPTWK0_MAX << 4) /* Counter On Wake Up 0 */

#define			AT91_SHDW_CPTWK0_(x)	((x) << 4)

#define			AT91_SHDW_CPTWK0_(x)	((x) << 4)

#define		AT91_SHDW_RTTWKEN	(1   << 16)		/* Real Time Timer Wake-up Enable */

#define		AT91_SHDW_RTTWKEN	(1   << 16)		/* Real Time Timer Wake-up Enable */

#define		AT91_SHDW_RTCWKEN	(1   << 17)		/* Real Time Clock Wake-up Enable */





#define AT91_SHDW_SR		0x08			/* Shut Down Status Register */

#define AT91_SHDW_SR		0x08			/* Shut Down Status Register */

#define		AT91_SHDW_WAKEUP0	(1 <<  0)		/* Wake-up 0 Status */

#define		AT91_SHDW_WAKEUP0	(1 <<  0)		/* Wake-up 0 Status */