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regulator: dt-bindings: dlg,da9121: Add dlg,no-gpio-control

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Add the optional boolean property dlg,no-gpio-control. When present, it
indicates that no DA91xx GPIO pins are configured/used with functions
RELOAD/DVC/EN, which can affect the output voltage control, regulator
mode control and enable signal control.

The absence of relevant GPIO DT properties does not imply that the
RELOAD/DVC/EN GPIO functions are unused. These functions are provided by
DA91xx GPIO pins and may be controlled by external hardware without
corresponding GPIO DT properties. The dlg,no-gpio-control property
explicitly indicates that none of these GPIO functions are used.

It is mutually exclusive with enable-gpios, regardless of whether the
referenced GPIO is connected to a GPIO pin or the IC_EN pin, since
enable-gpios allows the regulator to be controlled via an external
hardware signal.

Co-developed-by: Waqar Hameed <waqar.hameed@axis.com>
Signed-off-by: Waqar Hameed <waqar.hameed@axis.com>
Signed-off-by: André Svensson <andre.svensson@axis.com>
Link: https://patch.msgid.link/20260320-no-gpio-control-v2-1-dbc938e462cb@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
André Svensson 2026-03-20 08:33:24 +01:00 committed by Mark Brown
parent c369299895
commit 7795014962
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 49 additions and 0 deletions
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49
Documentation/devicetree/bindings/regulator/dlg,da9121.yaml
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@ -81,6 +81,14 @@ properties:
Specify the polling period, measured in milliseconds, between interrupt status
update checks. Range 1000-10000 ms.
dlg,no-gpio-control:
type: boolean
description: |
Available GPIO input pins of the regulator are strapped to fixed levels, therefore
GPIO configurable input functions, DVC/RELOAD/EN, cannot dynamically update BUCK
registers. GPIO pins connected as output pins are not required to be strapped to a
fixed level. Not allowed together with enable-gpios.
regulators:
type: object
additionalProperties: false
@ -134,6 +142,17 @@ allOf:
properties:
buck2: false
- if:
required:
- dlg,no-gpio-control
then:
properties:
regulators:
patternProperties:
"^buck([1-2])$":
properties:
enable-gpios: false
additionalProperties: false
examples:
@ -168,6 +187,36 @@ examples:
};
};
- |
#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,da9121";
reg = <0x68>;
interrupt-parent = <&gpio6>;
interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
dlg,irq-polling-delay-passive-ms = <2000>;
dlg,no-gpio-control;
regulators {
DA9121_BUCK: 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>;
};
};
};
};
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>