regulator: act8865 regulator modes and suspend states

Add documentation for act8865 regulator modes and suspend states.
Add active-semi,8865-regulator.h file for device tree binding constants
for act8865 regulators.

Signed-off-by: Raag Jadav <raagjadav@gmail.com>
Link: https://lore.kernel.org/r/1565721176-8955-3-git-send-email-raagjadav@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/regulator/act8865-regulator.txt b/Documentation/devicetree/bindings/regulator/act8865-regulator.txt
index 3ae9f10..b9f58e4 100644 (file)
--- a/Documentation/devicetree/bindings/regulator/act8865-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/act8865-regulator.txt
@@ -34,6 +34,9 @@ Optional input supply properties:
   - inl67-supply: The input supply for LDO_REG3 and LDO_REG4
 
 Any standard regulator properties can be used to configure the single regulator.
+regulator-initial-mode, regulator-allowed-modes and regulator-mode could be specified
+for act8865 using mode values from dt-bindings/regulator/active-semi,8865-regulator.h
+file.
 
 The valid names for regulators are:
        - for act8846:
@@ -47,6 +50,8 @@ The valid names for regulators are:
 Example:
 --------
 
+#include <dt-bindings/regulator/active-semi,8865-regulator.h>
+
                i2c1: i2c@f0018000 {
                        pmic: act8865@5b {
                                compatible = "active-semi,act8865";
@@ -65,9 +70,19 @@ Example:
                                                regulator-name = "VCC_1V2";
                                                regulator-min-microvolt = <1100000>;
                                                regulator-max-microvolt = <1300000>;
-                                               regulator-suspend-mem-microvolt = <1150000>;
-                                               regulator-suspend-standby-microvolt = <1150000>;
                                                regulator-always-on;
+
+                                               regulator-allowed-modes = <ACT8865_REGULATOR_MODE_FIXED>,
+                                                                         <ACT8865_REGULATOR_MODE_LOWPOWER>;
+                                               regulator-initial-mode = <ACT8865_REGULATOR_MODE_FIXED>;
+
+                                               regulator-state-mem {
+                                                       regulator-on-in-suspend;
+                                                       regulator-suspend-min-microvolt = <1150000>;
+                                                       regulator-suspend-max-microvolt = <1150000>;
+                                                       regulator-changeable-in-suspend;
+                                                       regulator-mode = <ACT8865_REGULATOR_MODE_LOWPOWER>;
+                                               };
                                        };
 
                                        vcc_3v3_reg: DCDC_REG3 {
@@ -82,6 +97,14 @@ Example:
                                                regulator-min-microvolt = <3300000>;
                                                regulator-max-microvolt = <3300000>;
                                                regulator-always-on;
+
+                                               regulator-allowed-modes = <ACT8865_REGULATOR_MODE_NORMAL>,
+                                                                         <ACT8865_REGULATOR_MODE_LOWPOWER>;
+                                               regulator-initial-mode = <ACT8865_REGULATOR_MODE_NORMAL>;
+
+                                               regulator-state-mem {
+                                                       regulator-off-in-suspend;
+                                               };
                                        };
 
                                        vddfuse_reg: LDO_REG2 {

diff --git a/include/dt-bindings/regulator/active-semi,8865-regulator.h b/include/dt-bindings/regulator/active-semi,8865-regulator.h
new file mode 100644 (file)
index 0000000..15473db
--- /dev/null
+++ b/include/dt-bindings/regulator/active-semi,8865-regulator.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Device Tree binding constants for the ACT8865 PMIC regulators
+ */
+
+#ifndef _DT_BINDINGS_REGULATOR_ACT8865_H
+#define _DT_BINDINGS_REGULATOR_ACT8865_H
+
+/*
+ * These constants should be used to specify regulator modes in device tree for
+ * ACT8865 regulators as follows:
+ * ACT8865_REGULATOR_MODE_FIXED:       It is specific to DCDC regulators and it
+ *                                     specifies the usage of fixed-frequency
+ *                                     PWM.
+ *
+ * ACT8865_REGULATOR_MODE_NORMAL:      It is specific to LDO regulators and it
+ *                                     specifies the usage of normal mode.
+ *
+ * ACT8865_REGULATOR_MODE_LOWPOWER:    For DCDC and LDO regulators; it specify
+ *                                     the usage of proprietary power-saving
+ *                                     mode.
+ */
+
+#define ACT8865_REGULATOR_MODE_FIXED           1
+#define ACT8865_REGULATOR_MODE_NORMAL          2
+#define ACT8865_REGULATOR_MODE_LOWPOWER        3
+
+#endif