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Subject[PATCH] ARM: dts: exynos4412-trats2: Add suspend configuration for max77686 regulators
Date
Add suspend to RAM configuration for max77686 regulators. Some LDOs and
bucks are disabled. This reduces energy consumption during S2R,
approximately from 17 mA to 9 mA.

Additionally remove old and not supported bindings:
- regulator-mem-off
- regulator-mem-idle
- regulator-mem-on
The max77686 driver does not parse them and they are not documented
anywere.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>

---

Previously this was part of [1] patchset. There were no changes in this
patch since last version (v6) of that patchset.

[1] https://lkml.org/lkml/2014/10/29/261
---
arch/arm/boot/dts/exynos4412-trats2.dts | 72 +++++++++++++++++++--------------
1 file changed, 42 insertions(+), 30 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts
index 29231b452643..c9b70b6fdaf2 100644
--- a/arch/arm/boot/dts/exynos4412-trats2.dts
+++ b/arch/arm/boot/dts/exynos4412-trats2.dts
@@ -225,7 +225,6 @@
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-always-on;
- regulator-mem-on;
};

ldo2_reg: ldo2 {
@@ -234,7 +233,9 @@
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
regulator-always-on;
- regulator-mem-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
};

ldo3_reg: ldo3 {
@@ -243,7 +244,6 @@
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
- regulator-mem-on;
};

ldo4_reg: ldo4 {
@@ -252,7 +252,6 @@
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
regulator-always-on;
- regulator-mem-on;
};

ldo5_reg: ldo5 {
@@ -261,7 +260,6 @@
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
- regulator-mem-on;
};

ldo6_reg: ldo6 {
@@ -270,7 +268,9 @@
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-always-on;
- regulator-mem-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
};

ldo7_reg: ldo7 {
@@ -279,7 +279,9 @@
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-always-on;
- regulator-mem-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
};

ldo8_reg: ldo8 {
@@ -287,7 +289,9 @@
regulator-name = "VMIPI_1.0V";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
};

ldo9_reg: ldo9 {
@@ -295,7 +299,6 @@
regulator-name = "CAM_ISP_MIPI_1.2V";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
- regulator-mem-idle;
};

ldo10_reg: ldo10 {
@@ -303,7 +306,9 @@
regulator-name = "VMIPI_1.8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
};

ldo11_reg: ldo11 {
@@ -312,7 +317,9 @@
regulator-min-microvolt = <1950000>;
regulator-max-microvolt = <1950000>;
regulator-always-on;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
};

ldo12_reg: ldo12 {
@@ -320,7 +327,9 @@
regulator-name = "VUOTG_3.0V";
regulator-min-microvolt = <3000000>;
regulator-max-microvolt = <3000000>;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
};

ldo13_reg: ldo13 {
@@ -328,7 +337,6 @@
regulator-name = "NFC_AVDD_1.8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
- regulator-mem-idle;
};

ldo14_reg: ldo14 {
@@ -337,7 +345,9 @@
regulator-min-microvolt = <1950000>;
regulator-max-microvolt = <1950000>;
regulator-always-on;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
};

ldo15_reg: ldo15 {
@@ -345,7 +355,9 @@
regulator-name = "VHSIC_1.0V";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
};

ldo16_reg: ldo16 {
@@ -353,7 +365,9 @@
regulator-name = "VHSIC_1.8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
};

ldo17_reg: ldo17 {
@@ -361,7 +375,6 @@
regulator-name = "CAM_SENSOR_CORE_1.2V";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
- regulator-mem-idle;
};

ldo18_reg: ldo18 {
@@ -369,7 +382,6 @@
regulator-name = "CAM_ISP_SEN_IO_1.8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
- regulator-mem-idle;
};

ldo19_reg: ldo19 {
@@ -377,7 +389,6 @@
regulator-name = "VT_CAM_1.8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
- regulator-mem-idle;
};

ldo20_reg: ldo20 {
@@ -385,7 +396,6 @@
regulator-name = "VDDQ_PRE_1.8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
- regulator-mem-idle;
};

ldo21_reg: ldo21 {
@@ -393,7 +403,6 @@
regulator-name = "VTF_2.8V";
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
- regulator-mem-idle;
};

ldo22_reg: ldo22 {
@@ -408,7 +417,6 @@
regulator-name = "TSP_AVDD_3.3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
- regulator-mem-idle;
};

ldo24_reg: ldo24 {
@@ -416,7 +424,6 @@
regulator-name = "TSP_VDD_1.8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
- regulator-mem-idle;
};

ldo25_reg: ldo25 {
@@ -424,7 +431,6 @@
regulator-name = "LCD_VCC_3.3V";
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
- regulator-mem-idle;
};

ldo26_reg: ldo26 {
@@ -432,7 +438,6 @@
regulator-name = "MOTOR_VCC_3.0V";
regulator-min-microvolt = <3000000>;
regulator-max-microvolt = <3000000>;
- regulator-mem-idle;
};

buck1_reg: buck1 {
@@ -442,7 +447,9 @@
regulator-max-microvolt = <1100000>;
regulator-always-on;
regulator-boot-on;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
};

buck2_reg: buck2 {
@@ -452,7 +459,9 @@
regulator-max-microvolt = <1500000>;
regulator-always-on;
regulator-boot-on;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
};

buck3_reg: buck3 {
@@ -462,7 +471,9 @@
regulator-max-microvolt = <1150000>;
regulator-always-on;
regulator-boot-on;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
};

buck4_reg: buck4 {
@@ -471,7 +482,9 @@
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1150000>;
regulator-boot-on;
- regulator-mem-off;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
};

buck5_reg: buck5 {
@@ -510,7 +523,6 @@
regulator-name = "CAM_ISP_CORE_1.2V";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1200000>;
- regulator-mem-off;
};
};
};
--
1.9.1


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