Add device binding doc for PF0900 PMIC driver.
Can not get the I2C_CRC_EN config by reading register. If the PMIC
OTP_I2C_CRC_EN is enable, need to add the nxp,i2c-crc-enable property.
Signed-off-by: Joy Zou <joy.zou@nxp.com>
---
Changes for v3:
1. change regulator node names into lowercase.
2. add the following description for nxp,i2c-crc-enable.
The CRC enabled during register read/write. Controlled by customer
unviewable fuse bits OTP_I2C_CRC_EN. Check chip part number.
So can not get the I2C_CRC_EN config by reading register.
If the PMIC OTP_I2C_CRC_EN is enable, need to add this
property.
3. add more nxp,i2c-crc-enable description for commit message.
4. remove the unnecessary nxp,dvs-run/standby-voltage.
These changes come from review comments:
https://lore.kernel.org/imx/e9f38e38-7df7-4d19-b5c0-2f18aeebcc78@kernel.org/
5. add regulator-state-mem property for example.
Changes for v2:
1. modify the binding file name to match compatible string.
2. add one space for dt_binding_check warning.
3. remove unnecessary quotes from "VAON".
4. remove the unnecessary empty line.
5. move unevaluatedProperties after the $ref.
6. move additionalProperties after regulator type.
7. remove unnecessary regulator description
---
.../devicetree/bindings/regulator/nxp,pf0900.yaml | 163 +++++++++++++++++++++
1 file changed, 163 insertions(+)
diff --git a/Documentation/devicetree/bindings/regulator/nxp,pf0900.yaml b/Documentation/devicetree/bindings/regulator/nxp,pf0900.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..8c8fc2cd4cedb0bef220d73f5cbc9a5f83072608
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/nxp,pf0900.yaml
@@ -0,0 +1,163 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/nxp,pf0900.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP PF0900 Power Management Integrated Circuit regulators
+
+maintainers:
+ - Joy Zou <joy.zou@nxp.com>
+
+description:
+ The PF0900 is a power management integrated circuit (PMIC) optimized
+ for high performance i.MX9x based applications. It features five high
+ efficiency buck converters, three linear and one vaon regulators. It
+ provides low quiescent current in Standby and low power off Modes.
+
+properties:
+ compatible:
+ enum:
+ - nxp,pf0900
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ regulators:
+ type: object
+ additionalProperties: false
+
+ properties:
+ vaon:
+ type: object
+ $ref: regulator.yaml#
+ unevaluatedProperties: false
+
+ patternProperties:
+ "^ldo[1-3]$":
+ type: object
+ $ref: regulator.yaml#
+ unevaluatedProperties: false
+
+ "^sw[1-5]$":
+ type: object
+ $ref: regulator.yaml#
+ unevaluatedProperties: false
+
+ nxp,i2c-crc-enable:
+ type: boolean
+ description:
+ The CRC enabled during register read/write. Controlled by customer
+ unviewable fuse bits OTP_I2C_CRC_EN. Check chip part number.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - regulators
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pmic@8 {
+ compatible = "nxp,pf0900";
+ reg = <0x08>;
+ interrupt-parent = <&pcal6524>;
+ interrupts = <89 IRQ_TYPE_LEVEL_LOW>;
+ nxp,i2c-crc-enable;
+
+ regulators {
+ vaon {
+ regulator-name = "VAON";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ sw1 {
+ regulator-name = "SW1";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <1950>;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-max-microvolt = <650000>;
+ regulator-suspend-min-microvolt = <650000>;
+ };
+ };
+
+ sw2 {
+ regulator-name = "SW2";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <1950>;
+ };
+
+ sw3 {
+ regulator-name = "SW3";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <1950>;
+ };
+
+ sw4 {
+ regulator-name = "SW4";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <1950>;
+ };
+
+ sw5 {
+ regulator-name = "SW5";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <1950>;
+ };
+
+ ldo1 {
+ regulator-name = "LDO1";
+ regulator-min-microvolt = <750000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo2 {
+ regulator-name = "LDO2";
+ regulator-min-microvolt = <650000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo3 {
+ regulator-name = "LDO3";
+ regulator-min-microvolt = <650000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+ };
+ };
+ };
--
2.37.1On Thu, Jul 31, 2025 at 06:44:41PM +0800, Joy Zou wrote:
> Add device binding doc for PF0900 PMIC driver.
>
> Can not get the I2C_CRC_EN config by reading register. If the PMIC
> OTP_I2C_CRC_EN is enable, need to add the nxp,i2c-crc-enable property.
>
> Signed-off-by: Joy Zou <joy.zou@nxp.com>
> ---
> Changes for v3:
> 1. change regulator node names into lowercase.
> 2. add the following description for nxp,i2c-crc-enable.
> The CRC enabled during register read/write. Controlled by customer
> unviewable fuse bits OTP_I2C_CRC_EN. Check chip part number.
> So can not get the I2C_CRC_EN config by reading register.
> If the PMIC OTP_I2C_CRC_EN is enable, need to add this
> property.
> 3. add more nxp,i2c-crc-enable description for commit message.
> 4. remove the unnecessary nxp,dvs-run/standby-voltage.
> These changes come from review comments:
> https://lore.kernel.org/imx/e9f38e38-7df7-4d19-b5c0-2f18aeebcc78@kernel.org/
> 5. add regulator-state-mem property for example.
>
> Changes for v2:
> 1. modify the binding file name to match compatible string.
> 2. add one space for dt_binding_check warning.
> 3. remove unnecessary quotes from "VAON".
> 4. remove the unnecessary empty line.
> 5. move unevaluatedProperties after the $ref.
> 6. move additionalProperties after regulator type.
> 7. remove unnecessary regulator description
> ---
> .../devicetree/bindings/regulator/nxp,pf0900.yaml | 163 +++++++++++++++++++++
> 1 file changed, 163 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/regulator/nxp,pf0900.yaml b/Documentation/devicetree/bindings/regulator/nxp,pf0900.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..8c8fc2cd4cedb0bef220d73f5cbc9a5f83072608
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/nxp,pf0900.yaml
> @@ -0,0 +1,163 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/nxp,pf0900.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP PF0900 Power Management Integrated Circuit regulators
> +
> +maintainers:
> + - Joy Zou <joy.zou@nxp.com>
> +
> +description:
> + The PF0900 is a power management integrated circuit (PMIC) optimized
> + for high performance i.MX9x based applications. It features five high
> + efficiency buck converters, three linear and one vaon regulators. It
> + provides low quiescent current in Standby and low power off Modes.
> +
> +properties:
> + compatible:
> + enum:
> + - nxp,pf0900
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + regulators:
> + type: object
> + additionalProperties: false
> +
> + properties:
> + vaon:
> + type: object
> + $ref: regulator.yaml#
> + unevaluatedProperties: false
> +
> + patternProperties:
> + "^ldo[1-3]$":
> + type: object
> + $ref: regulator.yaml#
> + unevaluatedProperties: false
> +
> + "^sw[1-5]$":
> + type: object
> + $ref: regulator.yaml#
> + unevaluatedProperties: false
> +
> + nxp,i2c-crc-enable:
> + type: boolean
> + description:
> + The CRC enabled during register read/write. Controlled by customer
> + unviewable fuse bits OTP_I2C_CRC_EN. Check chip part number.
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - regulators
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> +
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + pmic@8 {
> + compatible = "nxp,pf0900";
> + reg = <0x08>;
> + interrupt-parent = <&pcal6524>;
> + interrupts = <89 IRQ_TYPE_LEVEL_LOW>;
> + nxp,i2c-crc-enable;
> +
> + regulators {
> + vaon {
> + regulator-name = "VAON";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + sw1 {
> + regulator-name = "SW1";
> + regulator-min-microvolt = <500000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <1950>;
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + regulator-suspend-max-microvolt = <650000>;
> + regulator-suspend-min-microvolt = <650000>;
> + };
> + };
> +
> + sw2 {
> + regulator-name = "SW2";
> + regulator-min-microvolt = <300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <1950>;
> + };
> +
> + sw3 {
> + regulator-name = "SW3";
> + regulator-min-microvolt = <300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <1950>;
> + };
> +
> + sw4 {
> + regulator-name = "SW4";
> + regulator-min-microvolt = <300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <1950>;
> + };
> +
> + sw5 {
> + regulator-name = "SW5";
> + regulator-min-microvolt = <300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <1950>;
> + };
> +
> + ldo1 {
> + regulator-name = "LDO1";
> + regulator-min-microvolt = <750000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + ldo2 {
> + regulator-name = "LDO2";
> + regulator-min-microvolt = <650000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + ldo3 {
> + regulator-name = "LDO3";
> + regulator-min-microvolt = <650000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> + };
> + };
> + };
Wrong indentation. Otherwise,
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Rob
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