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Message-ID: <0606d3ded5fef4c38760246146f197db4ce3a374.1606830377.git.Adam.Ward.opensource@diasemi.com>
Date: Tue, 1 Dec 2020 13:52:27 +0000
From: Adam Ward <Adam.Ward.opensource@...semi.com>
To: Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>
CC: Liam Girdwood <lgirdwood@...il.com>,
Vincent Whitchurch <vincent.whitchurch@...s.com>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
Support Opensource <support.opensource@...semi.com>
Subject: [PATCH V4 01/10] regulator: Update DA9121 dt-bindings
Update bindings for the Dialog Semiconductor DA9121 voltage regulator to
add device variants.
Because several variants have multiple regulators, and to regard potential
to add GPIO support in future, the 'regulators' sub-node is added,
following the precedent set by other multi-regulator devices, including
the DA9211 family. This breaks compatibility with the original submission
by Vincent Whitchurch - but as this is still in for-next, the alignment
could be made before upstreaming occurs.
Signed-off-by: Adam Ward <Adam.Ward.opensource@...semi.com>
---
.../devicetree/bindings/regulator/dlg,da9121.yaml | 164 +++++++++++++++++++--
MAINTAINERS | 2 +
.../dt-bindings/regulator/dlg,da9121-regulator.h | 22 +++
3 files changed, 177 insertions(+), 11 deletions(-)
create mode 100644 include/dt-bindings/regulator/dlg,da9121-regulator.h
diff --git a/Documentation/devicetree/bindings/regulator/dlg,da9121.yaml b/Documentation/devicetree/bindings/regulator/dlg,da9121.yaml
index 2ece46e..6f2164f 100644
--- a/Documentation/devicetree/bindings/regulator/dlg,da9121.yaml
+++ b/Documentation/devicetree/bindings/regulator/dlg,da9121.yaml
@@ -7,41 +7,183 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
title: Dialog Semiconductor DA9121 voltage regulator
maintainers:
- - Vincent Whitchurch <vincent.whitchurch@...s.com>
+ - Adam Ward <Adam.Ward.opensource@...semi.com>
+
+description: |
+ Dialog Semiconductor DA9121 Single-channel 10A double-phase buck converter
+ Dialog Semiconductor DA9122 Double-channel 5A single-phase buck converter
+ Dialog Semiconductor DA9220 Double-channel 3A single-phase buck converter
+ Dialog Semiconductor DA9217 Single-channel 6A double-phase buck converter
+ Dialog Semiconductor DA9130 Single-channel 10A double-phase buck converter
+ Dialog Semiconductor DA9131 Double-channel 5A single-phase buck converter
+ Dialog Semiconductor DA9132 Double-channel 3A single-phase buck converter
+
+ Current limits
+
+ This is PER PHASE, and the current limit setting in the devices reflect
+ that with a maximum 10A limit. Allowing for transients at/near double
+ the rated current, this translates across the device range to per
+ channel figures as so...
+
+ | DA9121 DA9122 DA9220 DA9217 DA9140
+ | /DA9130 /DA9131 /DA9132
+ -----------------------------------------------------------------------------
+ Output current / channel | 10000000 5000000 3000000 6000000 40000000
+ Output current / phase | 5000000 5000000 3000000 3000000 9500000
+ -----------------------------------------------------------------------------
+ Min regulator-min-microvolt| 300000 300000 300000 300000 500000
+ Max regulator-max-microvolt| 1900000 1900000 1900000 1900000 1000000
+ Device hardware default | 1000000 1000000 1000000 1000000 1000000
+ -----------------------------------------------------------------------------
+ Min regulator-min-microamp | 7000000 3500000 3500000 7000000 26000000
+ Max regulator-max-microamp | 20000000 10000000 6000000 12000000 78000000
+ Device hardware default | 15000000 7500000 5500000 11000000 58000000
properties:
+ $nodename:
+ pattern: "pmic@[0-9a-f]{1,2}"
compatible:
- const: dlg,da9121
+ enum:
+ - dlg,da9121
+ - dlg,da9122
+ - dlg,da9220
+ - dlg,da9217
+ - dlg,da9130
+ - dlg,da9131
+ - dlg,da9132
+ - dlg,da9140
reg:
maxItems: 1
+ description: Specifies the I2C slave address.
+
+ interrupts:
+ maxItems: 1
+ description: IRQ line information.
+
+ dlg,irq-polling-delay-passive-ms:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 1000
+ maximum: 10000
+ description: |
+ Specify the polling period, measured in milliseconds, between interrupt status
+ update checks. Range 1000-10000 ms.
- buck1:
- description:
- Initial data for the Buck1 regulator.
- $ref: "regulator.yaml#"
+ regulators:
type: object
+ $ref: regulator.yaml#
+ description: |
+ This node defines the settings for the BUCK. The content of the
+ sub-node is defined by the standard binding for regulators; see regulator.yaml.
+ The DA9121 regulator is bound using their names listed below
+ buck1 - BUCK1
+ buck2 - BUCK2 //DA9122, DA9220, DA9131, DA9132 only
-additionalProperties: false
+ patternProperties:
+ "^buck([1-2])$":
+ type: object
+ $ref: regulator.yaml#
+
+ properties:
+ regulator-mode:
+ maxItems: 1
+ description: Defined in include/dt-bindings/regulator/dlg,da9121-regulator.h
+
+ regulator-initial-mode:
+ maxItems: 1
+ description: Defined in include/dt-bindings/regulator/dlg,da9121-regulator.h
+
+ enable-gpios:
+ maxItems: 1
+ description: Specify a valid GPIO for platform control of the regulator
+
+ dlg,ripple-cancel:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: |
+ Defined in include/dt-bindings/regulator/dlg,da9121-regulator.h
+ Only present on multi-channel devices (DA9122, DA9220, DA9131, DA9132)
+
+ unevaluatedProperties: false
required:
- compatible
- reg
+ - regulators
+
+additionalProperties: false
examples:
- |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/regulator/dlg,da9121-regulator.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
- regulator@68 {
+ pmic@68 {
compatible = "dlg,da9121";
reg = <0x68>;
- buck1 {
- regulator-min-microvolt = <680000>;
- regulator-max-microvolt = <820000>;
+ interrupt-parent = <&gpio6>;
+ interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+
+ dlg,irq-polling-delay-passive-ms = <2000>;
+
+ regulators {
+ DA9121_BUCK1: buck1 {
+ regulator-name = "BUCK1";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-min-microamp = <7000000>;
+ regulator-max-microamp = <20000000>;
+ regulator-boot-on;
+ regulator-initial-mode = <DA9121_BUCK_MODE_AUTO>;
+ enable-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
+ };
};
};
};
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/regulator/dlg,da9121-regulator.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pmic@68 {
+ compatible = "dlg,da9122";
+ reg = <0x68>;
+
+ interrupt-parent = <&gpio6>;
+ interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+
+ dlg,irq-polling-delay-passive-ms = <2000>;
+
+ regulators {
+ DA9122_BUCK1: buck1 {
+ regulator-name = "BUCK1";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-min-microamp = <3500000>;
+ regulator-max-microamp = <10000000>;
+ regulator-boot-on;
+ regulator-initial-mode = <DA9121_BUCK_MODE_AUTO>;
+ enable-gpios = <&gpio6 1 GPIO_ACTIVE_HIGH>;
+ dlg,ripple-cancel = <DA9121_BUCK_RIPPLE_CANCEL_NONE>;
+ };
+ DA9122_BUCK2: buck2 {
+ regulator-name = "BUCK2";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-min-microamp = <3500000>;
+ regulator-max-microamp = <10000000>;
+ regulator-boot-on;
+ regulator-initial-mode = <DA9121_BUCK_MODE_AUTO>;
+ enable-gpios = <&gpio6 2 GPIO_ACTIVE_HIGH>;
+ dlg,ripple-cancel = <DA9121_BUCK_RIPPLE_CANCEL_NONE>;
+ };
+ };
+ };
+ };
...
diff --git a/MAINTAINERS b/MAINTAINERS
index 9bff945..1e5b756 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5118,6 +5118,7 @@ S: Supported
W: http://www.dialog-semiconductor.com/products
F: Documentation/devicetree/bindings/input/da90??-onkey.txt
F: Documentation/devicetree/bindings/mfd/da90*.txt
+F: Documentation/devicetree/bindings/regulator/dlg,da9*.yaml
F: Documentation/devicetree/bindings/regulator/da92*.txt
F: Documentation/devicetree/bindings/regulator/slg51000.txt
F: Documentation/devicetree/bindings/sound/da[79]*.txt
@@ -5142,6 +5143,7 @@ F: drivers/rtc/rtc-da90??.c
F: drivers/thermal/da90??-thermal.c
F: drivers/video/backlight/da90??_bl.c
F: drivers/watchdog/da90??_wdt.c
+F: include/dt-bindings/regulator/dlg,da9*-regulator.h
F: include/linux/mfd/da903x.h
F: include/linux/mfd/da9052/
F: include/linux/mfd/da9055/
diff --git a/include/dt-bindings/regulator/dlg,da9121-regulator.h b/include/dt-bindings/regulator/dlg,da9121-regulator.h
new file mode 100644
index 0000000..954edf6
--- /dev/null
+++ b/include/dt-bindings/regulator/dlg,da9121-regulator.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef _DT_BINDINGS_REGULATOR_DLG_DA9121_H
+#define _DT_BINDINGS_REGULATOR_DLG_DA9121_H
+
+/*
+ * These buck mode constants may be used to specify values in device tree
+ * properties (e.g. regulator-initial-mode).
+ * A description of the following modes is in the manufacturers datasheet.
+ */
+
+#define DA9121_BUCK_MODE_FORCE_PFM 0
+#define DA9121_BUCK_MODE_FORCE_PWM 1
+#define DA9121_BUCK_MODE_FORCE_PWM_SHEDDING 2
+#define DA9121_BUCK_MODE_AUTO 3
+
+#define DA9121_BUCK_RIPPLE_CANCEL_NONE 0
+#define DA9121_BUCK_RIPPLE_CANCEL_SMALL 1
+#define DA9121_BUCK_RIPPLE_CANCEL_MID 2
+#define DA9121_BUCK_RIPPLE_CANCEL_LARGE 3
+
+#endif
--
1.9.1
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