1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/mfd/nxp,bbnsm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NXP Battery-Backed Non-Secure Module
10 - Jacky Bai <ping.bai@nxp.com>
13 NXP BBNSM serves as non-volatile logic and storage for the system.
14 it Intergrates RTC & ON/OFF control.
15 The RTC can retain its state and continues counting even when the
16 main chip is power down. A time alarm is generated once the most
17 significant 32 bits of the real-time counter match the value in the
19 The ON/OFF logic inside the BBNSM allows for connecting directly to
20 a PMIC or other voltage regulator device. both smart PMIC mode and
21 Dumb PMIC mode supported.
36 $ref: /schemas/rtc/rtc.yaml#
52 additionalProperties: false
56 $ref: /schemas/input/input.yaml#
61 - nxp,imx93-bbnsm-pwrkey
72 additionalProperties: false
80 additionalProperties: false
84 #include <dt-bindings/input/linux-event-codes.h>
85 #include <dt-bindings/interrupt-controller/arm-gic.h>
87 bbnsm: bbnsm@44440000 {
88 compatible = "nxp,imx93-bbnsm", "syscon", "simple-mfd";
89 reg = <0x44440000 0x10000>;
92 compatible = "nxp,imx93-bbnsm-rtc";
93 interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
96 bbnsm_pwrkey: pwrkey {
97 compatible = "nxp,imx93-bbnsm-pwrkey";
98 interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
99 linux,code = <KEY_POWER>;