Add binding for NXP BBNSM(Battery-Backed Non-Secure Module). Signed-off-by: Jacky Bai <ping.bai@xxxxxxx> --- .../devicetree/bindings/mfd/nxp,bbnsm.yaml | 103 ++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/nxp,bbnsm.yaml diff --git a/Documentation/devicetree/bindings/mfd/nxp,bbnsm.yaml b/Documentation/devicetree/bindings/mfd/nxp,bbnsm.yaml new file mode 100644 index 000000000000..b3f22b0daea6 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/nxp,bbnsm.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/nxp,bbnsm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP Battery-Backed Non-Secure Module bindings + +maintainers: + - Jacky Bai <ping.bai@xxxxxxx> + +description: | + NXP BBNSM serves as non-volatile logic and storage for the system. + it Intergrates RTC & ON/OFF control. + The RTC can retain its state and continues counting even when the + main chip is power down. A time alarm is generated once the most + significant 32 bits of the real-time counter match the value in the + Time Alarm register. + The ON/OFF logic inside the BBNSM allows for connecting directly to + a PMIC or other voltage regulator device. both smart PMIC mode and + Dumb PMIC mode supported. + +properties: + compatible: + items: + - enum: + - nxp,bbnsm + - const: syscon + - const: simple-mfd + + reg: + maxItems: 1 + + rtc: + type: object + + properties: + compatible: + const: nxp,bbnsm-rtc + + regmap: + maxItems: 1 + + interrupts: + maxItems: 1 + + required: + - compatible + - regmap + - interrupts + + additionalProperties: false + + pwrkey: + type: object + $ref: /schemas/input/input.yaml# + + properties: + compatible: + const: nxp,bbnsm-pwrkey + + regmap: + maxItems: 1 + + interrupts: + maxItems: 1 + + linux,code: true + + required: + - compatible + - regmap + - interrupts + + additionalProperties: false + +required: + - compatible + - reg + - rtc + - pwrkey + +additionalProperties: false + +examples: + - | + bbnsm: bbnsm@44440000 { + compatible = "nxp,bbnsm", "syscon", "simple-mfd"; + reg = <0x44440000 0x10000>; + + bbnsm_rtc: rtc { + compatible = "nxp,bbnsm-rtc"; + regmap = <&bbnsm>; + interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>; + }; + + bbnsm_pwrkey: pwrkey { + compatible = "nxp,bbnsm-pwrkey"; + regmap = <&bbnsm>; + interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>; + linux,code = <KEY_POWER>; + }; + }; -- 2.37.1
