[PATCH v2 0/4] pm: Add power off control

[PATCH v2 0/4] pm: Add power off control

[AnilKumar Ch]

Add PM power_off control to rtc driver, along with this PMIC status
is set to STATUS_OFF to shutdown PMIC if PWR_EN is toggled by RTC
module.

System power off sequence:-
* Set PMIC STATUS_OFF when PMIC_POWER_EN is pulled low
* Enable PMIC_POWER_EN in rtc module
* Set rtc ALARM2 time
* Enable ALARM2 interrupt

These patches were tested on AM335x-Bone.

Changes from v1:
	- Incorporated Vaibhav's comments on v1
	  * Changed the time rollover logic with the help of
	    rtc-lib APIs

AnilKumar Ch (2):
  ARM: dts: AM33XX: Set pmic-shutdown-controller for BeagleBone
  ARM: dts: AM33XX: Enable system power off control in am335x-bone

Colin Foe-Parker (2):
  mfd: tps65217: Set PMIC to shutdowm on PWR_EN toggle
  rtc: OMAP: Add system pm_power_off to rtc driver

 .../devicetree/bindings/regulator/tps65217.txt     |    4 +
 Documentation/devicetree/bindings/rtc/rtc-omap.txt |    5 ++
 arch/arm/boot/dts/am335x-bone.dts                  |    6 ++
 drivers/mfd/tps65217.c                             |   12 +++
 drivers/rtc/rtc-omap.c                             |   81 +++++++++++++++++++-
 5 files changed, 107 insertions(+), 1 deletion(-)

-- 
1.7.9.5

[PATCH v2 1/4] mfd: tps65217: Set PMIC to shutdowm on PWR_EN toggle

[AnilKumar Ch]

From: Colin Foe-Parker <colin.foeparker@logicpd.com>

Set tps65217 PMIC status to OFF if power enable toggle is
supported. Also adds platform data flag, which should be
passed from board init data.

Signed-off-by: Colin Foe-Parker <colin.foeparker@logicpd.com>
[anilkumar at ti.com: move the additions to tps65217 MFD driver]
Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
---
 .../devicetree/bindings/regulator/tps65217.txt     |    4 ++++
 drivers/mfd/tps65217.c                             |   12 ++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/tps65217.txt b/Documentation/devicetree/bindings/regulator/tps65217.txt
index d316fb8..4f05d20 100644
--- a/Documentation/devicetree/bindings/regulator/tps65217.txt
+++ b/Documentation/devicetree/bindings/regulator/tps65217.txt
@@ -11,6 +11,9 @@ Required properties:
   using the standard binding for regulators found at
   Documentation/devicetree/bindings/regulator/regulator.txt.
 
+Optional properties:
+- ti,pmic-shutdown-controller: Telling the PMIC to shutdown on PWR_EN toggle.
+
   The valid names for regulators are:
   tps65217: dcdc1, dcdc2, dcdc3, ldo1, ldo2, ldo3 and ldo4
 
@@ -20,6 +23,7 @@ Example:
 
 	tps: tps at 24 {
 		compatible = "ti,tps65217";
+		ti,pmic-shutdown-controller;
 
 		regulators {
 			dcdc1_reg: dcdc1 {
diff --git a/drivers/mfd/tps65217.c b/drivers/mfd/tps65217.c
index 3fb32e6..c7f17d8 100644
--- a/drivers/mfd/tps65217.c
+++ b/drivers/mfd/tps65217.c
@@ -160,6 +160,7 @@ static int __devinit tps65217_probe(struct i2c_client *client,
 	unsigned int version;
 	unsigned int chip_id = ids->driver_data;
 	const struct of_device_id *match;
+	bool status_off = false;
 	int ret;
 
 	if (client->dev.of_node) {
@@ -170,6 +171,8 @@ static int __devinit tps65217_probe(struct i2c_client *client,
 			return -EINVAL;
 		}
 		chip_id = (unsigned int)match->data;
+		status_off = of_property_read_bool(client->dev.of_node,
+					"ti,pmic-shutdown-controller");
 	}
 
 	if (!chip_id) {
@@ -207,6 +210,15 @@ static int __devinit tps65217_probe(struct i2c_client *client,
 		return ret;
 	}
 
+	/* Set the PMIC to shutdown on PWR_EN toggle */
+	if (status_off) {
+		ret = tps65217_set_bits(tps, TPS65217_REG_STATUS,
+				TPS65217_STATUS_OFF, TPS65217_STATUS_OFF,
+				TPS65217_PROTECT_NONE);
+		if (ret)
+			dev_warn(tps->dev, "unable to set the status OFF\n");
+	}
+
 	dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
 			(version & TPS65217_CHIPID_CHIP_MASK) >> 4,
 			version & TPS65217_CHIPID_REV_MASK);
-- 
1.7.9.5

[PATCH v2 1/4] mfd: tps65217: Set PMIC to shutdowm on PWR_EN toggle

[Kevin Hilman]

AnilKumar Ch <anilkumar@ti.com> writes:

> From: Colin Foe-Parker <colin.foeparker@logicpd.com>
>
> Set tps65217 PMIC status to OFF if power enable toggle is
> supported. Also adds platform data flag, which should be
> passed from board init data.

nit: changelog mentions platform_data, but the code is using DT.

Kevin

> Signed-off-by: Colin Foe-Parker <colin.foeparker@logicpd.com>
> [anilkumar at ti.com: move the additions to tps65217 MFD driver]
> Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
> ---
>  .../devicetree/bindings/regulator/tps65217.txt     |    4 ++++
>  drivers/mfd/tps65217.c                             |   12 ++++++++++++
>  2 files changed, 16 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/regulator/tps65217.txt b/Documentation/devicetree/bindings/regulator/tps65217.txt
> index d316fb8..4f05d20 100644
> --- a/Documentation/devicetree/bindings/regulator/tps65217.txt
> +++ b/Documentation/devicetree/bindings/regulator/tps65217.txt
> @@ -11,6 +11,9 @@ Required properties:
>    using the standard binding for regulators found at
>    Documentation/devicetree/bindings/regulator/regulator.txt.
>  
> +Optional properties:
> +- ti,pmic-shutdown-controller: Telling the PMIC to shutdown on PWR_EN toggle.
> +
>    The valid names for regulators are:
>    tps65217: dcdc1, dcdc2, dcdc3, ldo1, ldo2, ldo3 and ldo4
>  
> @@ -20,6 +23,7 @@ Example:
>  
>  	tps: tps at 24 {
>  		compatible = "ti,tps65217";
> +		ti,pmic-shutdown-controller;
>  
>  		regulators {
>  			dcdc1_reg: dcdc1 {
> diff --git a/drivers/mfd/tps65217.c b/drivers/mfd/tps65217.c
> index 3fb32e6..c7f17d8 100644
> --- a/drivers/mfd/tps65217.c
> +++ b/drivers/mfd/tps65217.c
> @@ -160,6 +160,7 @@ static int __devinit tps65217_probe(struct i2c_client *client,
>  	unsigned int version;
>  	unsigned int chip_id = ids->driver_data;
>  	const struct of_device_id *match;
> +	bool status_off = false;
>  	int ret;
>  
>  	if (client->dev.of_node) {
> @@ -170,6 +171,8 @@ static int __devinit tps65217_probe(struct i2c_client *client,
>  			return -EINVAL;
>  		}
>  		chip_id = (unsigned int)match->data;
> +		status_off = of_property_read_bool(client->dev.of_node,
> +					"ti,pmic-shutdown-controller");
>  	}
>  
>  	if (!chip_id) {
> @@ -207,6 +210,15 @@ static int __devinit tps65217_probe(struct i2c_client *client,
>  		return ret;
>  	}
>  
> +	/* Set the PMIC to shutdown on PWR_EN toggle */
> +	if (status_off) {
> +		ret = tps65217_set_bits(tps, TPS65217_REG_STATUS,
> +				TPS65217_STATUS_OFF, TPS65217_STATUS_OFF,
> +				TPS65217_PROTECT_NONE);
> +		if (ret)
> +			dev_warn(tps->dev, "unable to set the status OFF\n");
> +	}
> +
>  	dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
>  			(version & TPS65217_CHIPID_CHIP_MASK) >> 4,
>  			version & TPS65217_CHIPID_REV_MASK);

[PATCH v2 1/4] mfd: tps65217: Set PMIC to shutdowm on PWR_EN toggle

[Peter Korsgaard]

>>>>> "AnilKumar" == AnilKumar Ch <anilkumar@ti.com> writes:

s/shutdowm/shutdown/ in the subject.

 AnilKumar> From: Colin Foe-Parker <colin.foeparker@logicpd.com>
 AnilKumar> Set tps65217 PMIC status to OFF if power enable toggle is
 AnilKumar> supported. Also adds platform data flag, which should be
 AnilKumar> passed from board init data.

You're adding dt binding, not platform data.


 AnilKumar> Signed-off-by: Colin Foe-Parker <colin.foeparker@logicpd.com>
 AnilKumar> [anilkumar at ti.com: move the additions to tps65217 MFD driver]
 AnilKumar> Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
 AnilKumar> ---
 AnilKumar>  .../devicetree/bindings/regulator/tps65217.txt     |    4 ++++
 AnilKumar>  drivers/mfd/tps65217.c                             |   12 ++++++++++++
 AnilKumar>  2 files changed, 16 insertions(+)

 AnilKumar> diff --git a/Documentation/devicetree/bindings/regulator/tps65217.txt b/Documentation/devicetree/bindings/regulator/tps65217.txt
 AnilKumar> index d316fb8..4f05d20 100644
 AnilKumar> --- a/Documentation/devicetree/bindings/regulator/tps65217.txt
 AnilKumar> +++ b/Documentation/devicetree/bindings/regulator/tps65217.txt
 AnilKumar> @@ -11,6 +11,9 @@ Required properties:
 AnilKumar>    using the standard binding for regulators found at
 AnilKumar>    Documentation/devicetree/bindings/regulator/regulator.txt.
 
 AnilKumar> +Optional properties:
 AnilKumar> +- ti,pmic-shutdown-controller: Telling the PMIC to shutdown on PWR_EN toggle.

Ehh, I don't know the tps65217 particular well, but according to the
datasheet the REG_STATUS_OFF bit enables/disables the PB_IN pin, not
PWR_EN. It's also not only about powering down but also powering up
again.

I don't feel this property name is very clear. Perhaps something about
power button or push button monitor as it is called in the datasheet?

-- 
Bye, Peter Korsgaard

[PATCH v2 1/4] mfd: tps65217: Set PMIC to shutdowm on PWR_EN toggle

[AnilKumar, Chimata]

On Mon, Nov 19, 2012 at 16:20:27, Peter Korsgaard wrote:
> >>>>> "AnilKumar" == AnilKumar Ch <anilkumar@ti.com> writes:
> 
> s/shutdowm/shutdown/ in the subject.

I will change

> 
>  AnilKumar> From: Colin Foe-Parker <colin.foeparker@logicpd.com>
>  AnilKumar> Set tps65217 PMIC status to OFF if power enable toggle is
>  AnilKumar> supported. Also adds platform data flag, which should be
>  AnilKumar> passed from board init data.
> 
> You're adding dt binding, not platform data.

I will change

> 
>  AnilKumar> Signed-off-by: Colin Foe-Parker <colin.foeparker@logicpd.com>
>  AnilKumar> [anilkumar at ti.com: move the additions to tps65217 MFD driver]
>  AnilKumar> Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
>  AnilKumar> ---
>  AnilKumar>  .../devicetree/bindings/regulator/tps65217.txt     |    4 ++++
>  AnilKumar>  drivers/mfd/tps65217.c                             |   12 ++++++++++++
>  AnilKumar>  2 files changed, 16 insertions(+)
> 
>  AnilKumar> diff --git a/Documentation/devicetree/bindings/regulator/tps65217.txt b/Documentation/devicetree/bindings/regulator/tps65217.txt
>  AnilKumar> index d316fb8..4f05d20 100644
>  AnilKumar> --- a/Documentation/devicetree/bindings/regulator/tps65217.txt
>  AnilKumar> +++ b/Documentation/devicetree/bindings/regulator/tps65217.txt
>  AnilKumar> @@ -11,6 +11,9 @@ Required properties:
>  AnilKumar>    using the standard binding for regulators found at
>  AnilKumar>    Documentation/devicetree/bindings/regulator/regulator.txt.
>  
>  AnilKumar> +Optional properties:
>  AnilKumar> +- ti,pmic-shutdown-controller: Telling the PMIC to shutdown on PWR_EN toggle.
> 
> Ehh, I don't know the tps65217 particular well, but according to the
> datasheet the REG_STATUS_OFF bit enables/disables the PB_IN pin, not
> PWR_EN. It's also not only about powering down but also powering up
> again.
> 
> I don't feel this property name is very clear. Perhaps something about
> power button or push button monitor as it is called in the datasheet?

Here I am writing "TPS65217_STATUS_OFF" to status register, BIT(7).
Description of this bit field: "OFF bit. Set this bit to 1 to enter OFF state
when PWR_EN pin is pulled low. Bit is automatically reset to 0."

PWR_EN pin pull-down is doing by RTC module.

Regards
AnilKumar

[PATCH v2 1/4] mfd: tps65217: Set PMIC to shutdowm on PWR_EN toggle

[Peter Korsgaard]

>>>>> "A" == AnilKumar, Chimata <anilkumar@ti.com> writes:

Hi,

 >> I don't feel this property name is very clear. Perhaps something about
 >> power button or push button monitor as it is called in the datasheet?

 A> Here I am writing "TPS65217_STATUS_OFF" to status register, BIT(7).
 A> Description of this bit field: "OFF bit. Set this bit to 1 to enter
 A> OFF state when PWR_EN pin is pulled low. Bit is automatically reset
 A> to 0."

 A> PWR_EN pin pull-down is doing by RTC module.

Ahh yes, sorry -ENOCOFFEE. I somehow misread the datasheet and looked at
bit 0 instead.

-- 
Bye, Peter Korsgaard

[PATCH v2 2/4] rtc: OMAP: Add system pm_power_off to rtc driver

[AnilKumar Ch]

From: Colin Foe-Parker <colin.foeparker@logicpd.com>

Add system power off control to rtc driver which is the in-charge
of controlling the BeagleBone system power. The power_off routine
can be hooked up to "pm_power_off" system call.

System power off sequence:-
* Set PMIC STATUS_OFF when PMIC_POWER_EN is pulled low
* Enable PMIC_POWER_EN in rtc module
* Set rtc ALARM2 time
* Enable ALARM2 interrupt

Added while (1); after the above steps to make sure that no other
process acquire cpu. Otherwise we might see an unexpected behaviour
because we are shutting down all the power rails of SoC except RTC.

Signed-off-by: Colin Foe-Parker <colin.foeparker@logicpd.com>
[anilkumar at ti.com: move poweroff additions to rtc driver]
Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
---
 Documentation/devicetree/bindings/rtc/rtc-omap.txt |    5 ++
 drivers/rtc/rtc-omap.c                             |   81 +++++++++++++++++++-
 2 files changed, 85 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/rtc/rtc-omap.txt b/Documentation/devicetree/bindings/rtc/rtc-omap.txt
index b47aa41..8d9f4f9 100644
--- a/Documentation/devicetree/bindings/rtc/rtc-omap.txt
+++ b/Documentation/devicetree/bindings/rtc/rtc-omap.txt
@@ -6,6 +6,10 @@ Required properties:
 - interrupts: rtc timer, alarm interrupts in order
 - interrupt-parent: phandle for the interrupt controller
 
+Optional properties:
+- ti,system-power-controller: Telling whether or not rtc is controlling
+  the system power.
+
 Example:
 
 rtc at 1c23000 {
@@ -14,4 +18,5 @@ rtc at 1c23000 {
 	interrupts = <19
 		      19>;
 	interrupt-parent = <&intc>;
+	ti,system-power-controller;
 };
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 6009714..c31f93a 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -72,6 +72,14 @@
 #define OMAP_RTC_KICK0_REG		0x6c
 #define OMAP_RTC_KICK1_REG		0x70
 
+#define OMAP_RTC_ALARM2_SECONDS_REG	0x80
+#define OMAP_RTC_ALARM2_MINUTES_REG	0x84
+#define OMAP_RTC_ALARM2_HOURS_REG	0x88
+#define OMAP_RTC_ALARM2_DAYS_REG	0x8c
+#define OMAP_RTC_ALARM2_MONTHS_REG	0x90
+#define OMAP_RTC_ALARM2_YEARS_REG	0x94
+#define OMAP_RTC_PMIC_REG		0x98
+
 /* OMAP_RTC_CTRL_REG bit fields: */
 #define OMAP_RTC_CTRL_SPLIT		(1<<7)
 #define OMAP_RTC_CTRL_DISABLE		(1<<6)
@@ -93,15 +101,21 @@
 #define OMAP_RTC_STATUS_BUSY            (1<<0)
 
 /* OMAP_RTC_INTERRUPTS_REG bit fields: */
+#define OMAP_RTC_INTERRUPTS_IT_ALARM2   (1<<4)
 #define OMAP_RTC_INTERRUPTS_IT_ALARM    (1<<3)
 #define OMAP_RTC_INTERRUPTS_IT_TIMER    (1<<2)
 
+/* OMAP_RTC_PMIC_REG bit fields: */
+#define OMAP_RTC_PMIC_POWER_EN_EN       (1<<16)
+
 /* OMAP_RTC_KICKER values */
 #define	KICK0_VALUE			0x83e70b13
 #define	KICK1_VALUE			0x95a4f1e0
 
 #define	OMAP_RTC_HAS_KICKER		0x1
 
+#define SHUTDOWN_TIME_SEC		2
+
 static void __iomem	*rtc_base;
 
 #define rtc_read(addr)		readb(rtc_base + (addr))
@@ -290,6 +304,63 @@ static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
 	return 0;
 }
 
+/*
+ * rtc_power_off: Set the pmic power off sequence. The RTC generates
+ * pmic_pwr_enable control, which can be used to control an external
+ * PMIC.
+ */
+static void rtc_power_off(void)
+{
+	u32 val;
+	struct rtc_time tm;
+	spinlock_t lock;
+	unsigned long flags, time;
+
+	spin_lock_init(&lock);
+
+	/* Set PMIC power enable */
+	val = readl(rtc_base + OMAP_RTC_PMIC_REG);
+	writel(val | OMAP_RTC_PMIC_POWER_EN_EN, rtc_base + OMAP_RTC_PMIC_REG);
+
+	/* Read rtc time */
+	omap_rtc_read_time(NULL, &tm);
+
+	/* Convert Gregorian date to seconds since 01-01-1970 00:00:00 */
+	rtc_tm_to_time(&tm, &time);
+
+	/* Add shutdown time to the current value */
+	time += SHUTDOWN_TIME_SEC;
+
+	/* Convert seconds since 01-01-1970 00:00:00 to Gregorian date */
+	rtc_time_to_tm(time, &tm);
+
+	if (tm2bcd(&tm) < 0)
+		return;
+
+	pr_info("System will go to power_off state in approx. %d secs\n",
+			SHUTDOWN_TIME_SEC);
+
+	/*
+	 * pmic_pwr_enable is controlled by means of ALARM2 event. So here
+	 * programming alarm2 expiry time and enabling alarm2 interrupt
+	 */
+	rtc_write(tm.tm_sec, OMAP_RTC_ALARM2_SECONDS_REG);
+	rtc_write(tm.tm_min, OMAP_RTC_ALARM2_MINUTES_REG);
+	rtc_write(tm.tm_hour, OMAP_RTC_ALARM2_HOURS_REG);
+	rtc_write(tm.tm_mday, OMAP_RTC_ALARM2_DAYS_REG);
+	rtc_write(tm.tm_mon, OMAP_RTC_ALARM2_MONTHS_REG);
+	rtc_write(tm.tm_year, OMAP_RTC_ALARM2_YEARS_REG);
+
+	/* Enable alarm2 interrupt */
+	val = readl(rtc_base + OMAP_RTC_INTERRUPTS_REG);
+	writel(val | OMAP_RTC_INTERRUPTS_IT_ALARM2,
+				rtc_base + OMAP_RTC_INTERRUPTS_REG);
+
+	/* Do not allow to execute any other task */
+	spin_lock_irqsave(&lock, flags);
+	while (1);
+}
+
 static struct rtc_class_ops omap_rtc_ops = {
 	.read_time	= omap_rtc_read_time,
 	.set_time	= omap_rtc_set_time,
@@ -327,12 +398,16 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
 	struct resource		*res, *mem;
 	struct rtc_device	*rtc;
 	u8			reg, new_ctrl;
+	bool			pm_off = false;
 	const struct platform_device_id *id_entry;
 	const struct of_device_id *of_id;
 
 	of_id = of_match_device(omap_rtc_of_match, &pdev->dev);
-	if (of_id)
+	if (of_id) {
 		pdev->id_entry = of_id->data;
+		pm_off = of_property_read_bool(pdev->dev.of_node,
+					"ti,system-power-controller");
+	}
 
 	omap_rtc_timer = platform_get_irq(pdev, 0);
 	if (omap_rtc_timer <= 0) {
@@ -385,6 +460,10 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, rtc);
 	dev_set_drvdata(&rtc->dev, mem);
 
+	/* RTC power off */
+	if (pm_off && !pm_power_off)
+		pm_power_off = rtc_power_off;
+
 	/* clear pending irqs, and set 1/second periodic,
 	 * which we'll use instead of update irqs
 	 */
-- 
1.7.9.5

[PATCH v2 3/4] ARM: dts: AM33XX: Set pmic-shutdown-controller for BeagleBone

[AnilKumar Ch]

Set ti,pmic-shutdown-controller for BeagleBone in am335x-bone.dts
file, this flag is used by the driver to set tps65217 PMIC status
to OFF when PWR_EN toggle.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
---
 arch/arm/boot/dts/am335x-bone.dts |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index 2c33888..1d55190 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -88,6 +88,8 @@
 /include/ "tps65217.dtsi"
 
 &tps {
+	ti,pmic-shutdown-controller;
+
 	regulators {
 		dcdc1_reg: regulator at 0 {
 			regulator-always-on;
-- 
1.7.9.5

[PATCH v2 4/4] ARM: dts: AM33XX: Enable system power off control in am335x-bone

[AnilKumar Ch]

Enable system power off control for BeagleBone in am335x-bone.dts file
under rtc node. RTC is the incharge of controlling the system power.
This flag is used by the driver to hook up the pm_power_off system call.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
---
 arch/arm/boot/dts/am335x-bone.dts |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index 1d55190..206c3eb 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -52,6 +52,10 @@
 			};
 
 		};
+
+		rtc at 44e3e000 {
+			ti,system-power-controller;
+		};
 	};
 
 	leds {
-- 
1.7.9.5

[PATCH v2 4/4] ARM: dts: AM33XX: Enable system power off control in am335x-bone

[Kevin Hilman]

AnilKumar Ch <anilkumar@ti.com> writes:

> Enable system power off control for BeagleBone in am335x-bone.dts file
> under rtc node. RTC is the incharge of controlling the system power.
> This flag is used by the driver to hook up the pm_power_off system call.
>
> Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
> ---
>  arch/arm/boot/dts/am335x-bone.dts |    4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
> index 1d55190..206c3eb 100644
> --- a/arch/arm/boot/dts/am335x-bone.dts
> +++ b/arch/arm/boot/dts/am335x-bone.dts
> @@ -52,6 +52,10 @@
>  			};
>  
>  		};
> +
> +		rtc at 44e3e000 {
> +			ti,system-power-controller;
> +		};
>  	};

Also, I think this series is missing a patch that allows the RTC driver
to be compiled on AM335x.

Kevin

[PATCH v2 4/4] ARM: dts: AM33XX: Enable system power off control in am335x-bone

[AnilKumar, Chimata]

On Sat, Nov 17, 2012 at 00:40:04, Kevin Hilman wrote:
> AnilKumar Ch <anilkumar@ti.com> writes:
> 
> > Enable system power off control for BeagleBone in am335x-bone.dts file
> > under rtc node. RTC is the incharge of controlling the system power.
> > This flag is used by the driver to hook up the pm_power_off system call.
> >
> > Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
> > ---
> >  arch/arm/boot/dts/am335x-bone.dts |    4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
> > index 1d55190..206c3eb 100644
> > --- a/arch/arm/boot/dts/am335x-bone.dts
> > +++ b/arch/arm/boot/dts/am335x-bone.dts
> > @@ -52,6 +52,10 @@
> >  			};
> >  
> >  		};
> > +
> > +		rtc at 44e3e000 {
> > +			ti,system-power-controller;
> > +		};
> >  	};
> 
> Also, I think this series is missing a patch that allows the RTC driver
> to be compiled on AM335x.
> 

Hi Kevin,

Yes I missed; I will submit that as a separate patch.

Thanks
AnilKumar