[PATCH 1/5] ARM: dts: am43xx-epos-evm: Keep DCDC5 and DCDC6 always on

[PATCH 1/5] ARM: dts: am43xx-epos-evm: Keep DCDC5 and DCDC6 always on

[Andrew F. Davis]

From: Kabir Sahane <x0153567@ti.com>

These regulator outputs are needed even in deep sleep modes to prevent
low-voltage detection events. Make these always ON to avoid this.

Signed-off-by: Kabir Sahane <x0153567@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 arch/arm/boot/dts/am43x-epos-evm.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index 9dfd80e3b76e..7db5cf3facde 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -634,12 +634,16 @@
 			regulator-name = "v1_0bat";
 			regulator-min-microvolt = <1000000>;
 			regulator-max-microvolt = <1000000>;
+			regulator-boot-on;
+			regulator-always-on;
 		};
 
 		dcdc6: regulator-dcdc6 {
 			regulator-name = "v1_8bat";
 			regulator-min-microvolt = <1800000>;
 			regulator-max-microvolt = <1800000>;
+			regulator-boot-on;
+			regulator-always-on;
 		};
 
 		ldo1: regulator-ldo1 {
-- 
2.21.0

[PATCH 2/5] ARM: dts: am43xx-epos-evm: Keep DCDC3 regulator on in suspend to memory

[Andrew F. Davis]

From: Mike Erdahl <m-erdahl@ti.com>

When going to suspend to ram mode (or rtc-only mode), the DDR regulator
must be told to stay on, else this rail will go down when the PMIC_EN
signal is deasserted.

Signed-off-by: Mike Erdahl <m-erdahl@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 arch/arm/boot/dts/am43x-epos-evm.dts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index 7db5cf3facde..606b848d809f 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -620,6 +620,12 @@
 			regulator-name = "vdcdc3";
 			regulator-boot-on;
 			regulator-always-on;
+			regulator-state-mem {
+				regulator-on-in-suspend;
+			};
+			regulator-state-disk {
+				regulator-off-in-suspend;
+			};
 		};
 
 		dcdc4: regulator-dcdc4 {
-- 
2.21.0

[PATCH 3/5] ARM: dts: am43xx-epos-evm: Add matrix keypad as wakeup source

[Andrew F. Davis]

Mark matrix-keypad as a wakeup source.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 arch/arm/boot/dts/am43x-epos-evm.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index 606b848d809f..9b8b132b04e1 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -80,6 +80,7 @@
 		pinctrl-names = "default", "sleep";
 		pinctrl-0 = <&matrix_keypad_default>;
 		pinctrl-1 = <&matrix_keypad_sleep>;
+		wakeup-source;
 
 		row-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH		/* Bank0, pin12 */
 			     &gpio0 13 GPIO_ACTIVE_HIGH		/* Bank0, pin13 */
-- 
2.21.0

[PATCH 4/5] ARM: OMAP: Wakeupgen: AM43xx HS devices should save context like non-HS

[Andrew F. Davis]

Unlike some previous generation devices, AM43xx HS IRQ and Wakegen
context is handled by the ROM for us, and no secure service call
is needed or supported. Non-GP AM43xx devices should take the
same path as GP.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 arch/arm/mach-omap2/omap-wakeupgen.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
index 17558be4bf0a..7dcbe1736f7e 100644
--- a/arch/arm/mach-omap2/omap-wakeupgen.c
+++ b/arch/arm/mach-omap2/omap-wakeupgen.c
@@ -436,13 +436,13 @@ static int irq_notifier(struct notifier_block *self, unsigned long cmd,	void *v)
 {
 	switch (cmd) {
 	case CPU_CLUSTER_PM_ENTER:
-		if (omap_type() == OMAP2_DEVICE_TYPE_GP)
+		if (omap_type() == OMAP2_DEVICE_TYPE_GP || soc_is_am43xx())
 			irq_save_context();
 		else
 			irq_save_secure_context();
 		break;
 	case CPU_CLUSTER_PM_EXIT:
-		if (omap_type() == OMAP2_DEVICE_TYPE_GP)
+		if (omap_type() == OMAP2_DEVICE_TYPE_GP || soc_is_am43xx())
 			irq_restore_context();
 		break;
 	}
-- 
2.21.0

[PATCH 5/5] ARM: OMAP2+: pm33xx-core: Do not Turn OFF CEFUSE as PPA may be using it

[Andrew F. Davis]

From: Kabir Sahane <x0153567@ti.com>

This area is used to store keys by HSPPA in case of AM438x SOC. Leave it
active.

Signed-off-by: Kabir Sahane <x0153567@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 arch/arm/mach-omap2/pm33xx-core.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-omap2/pm33xx-core.c b/arch/arm/mach-omap2/pm33xx-core.c
index 724cf5774a6c..c93b6efd565f 100644
--- a/arch/arm/mach-omap2/pm33xx-core.c
+++ b/arch/arm/mach-omap2/pm33xx-core.c
@@ -51,10 +51,12 @@ static int amx3_common_init(void)
 
 	/* CEFUSE domain can be turned off post bootup */
 	cefuse_pwrdm = pwrdm_lookup("cefuse_pwrdm");
-	if (cefuse_pwrdm)
-		omap_set_pwrdm_state(cefuse_pwrdm, PWRDM_POWER_OFF);
-	else
+	if (!cefuse_pwrdm)
 		pr_err("PM: Failed to get cefuse_pwrdm\n");
+	else if (omap_type() != OMAP2_DEVICE_TYPE_GP)
+		pr_info("PM: Leaving EFUSE power domain active\n");
+	else
+		omap_set_pwrdm_state(cefuse_pwrdm, PWRDM_POWER_OFF);
 
 	return 0;
 }
-- 
2.21.0

Re: [PATCH 1/5] ARM: dts: am43xx-epos-evm: Keep DCDC5 and DCDC6 always on

[Tony Lindgren]

* Andrew F. Davis <afd@ti.com> [190329 10:53]:
> From: Kabir Sahane <x0153567@ti.com>
> 
> These regulator outputs are needed even in deep sleep modes to prevent
> low-voltage detection events. Make these always ON to avoid this.

Thanks applying the three dts changes into omap-for-v5.2/dt.

Regards,

Tony

Re: [PATCH 4/5] ARM: OMAP: Wakeupgen: AM43xx HS devices should save context like non-HS

[Tony Lindgren]

* Andrew F. Davis <afd@ti.com> [190329 17:53]:
> Unlike some previous generation devices, AM43xx HS IRQ and Wakegen
> context is handled by the ROM for us, and no secure service call
> is needed or supported. Non-GP AM43xx devices should take the
> same path as GP.

Applying the two SoC related changes into omap-for-v5.2/soc.

Tony