Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
102 lines
2.2 KiB
YAML
102 lines
2.2 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mfd/nxp,bbnsm.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NXP Battery-Backed Non-Secure Module
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maintainers:
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- Jacky Bai <ping.bai@nxp.com>
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description: |
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NXP BBNSM serves as non-volatile logic and storage for the system.
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it Intergrates RTC & ON/OFF control.
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The RTC can retain its state and continues counting even when the
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main chip is power down. A time alarm is generated once the most
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significant 32 bits of the real-time counter match the value in the
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Time Alarm register.
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The ON/OFF logic inside the BBNSM allows for connecting directly to
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a PMIC or other voltage regulator device. both smart PMIC mode and
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Dumb PMIC mode supported.
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properties:
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compatible:
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items:
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- enum:
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- nxp,imx93-bbnsm
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- const: syscon
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- const: simple-mfd
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reg:
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maxItems: 1
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rtc:
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type: object
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$ref: /schemas/rtc/rtc.yaml#
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properties:
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compatible:
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enum:
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- nxp,imx93-bbnsm-rtc
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interrupts:
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maxItems: 1
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start-year: true
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required:
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- compatible
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- interrupts
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additionalProperties: false
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pwrkey:
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type: object
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$ref: /schemas/input/input.yaml#
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properties:
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compatible:
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enum:
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- nxp,imx93-bbnsm-pwrkey
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interrupts:
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maxItems: 1
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linux,code: true
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required:
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- compatible
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- interrupts
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additionalProperties: false
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required:
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- compatible
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- reg
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- rtc
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- pwrkey
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/input/linux-event-codes.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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bbnsm: bbnsm@44440000 {
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compatible = "nxp,imx93-bbnsm", "syscon", "simple-mfd";
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reg = <0x44440000 0x10000>;
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bbnsm_rtc: rtc {
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compatible = "nxp,imx93-bbnsm-rtc";
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interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
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};
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bbnsm_pwrkey: pwrkey {
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compatible = "nxp,imx93-bbnsm-pwrkey";
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interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
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linux,code = <KEY_POWER>;
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};
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};
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