Enable the SpacemiT P1, which is an I2C-controlled PMIC.  Initially we
only the regulators will be supported.

Signed-off-by: Alex Elder <elder@riscstar.com>
---
 .../devicetree/bindings/mfd/spacemit,p1.yaml  | 86 +++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/spacemit,p1.yaml

diff --git a/Documentation/devicetree/bindings/mfd/spacemit,p1.yaml b/Documentation/devicetree/bindings/mfd/spacemit,p1.yaml
new file mode 100644
index 0000000000000..5cc34d4934b54
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/spacemit,p1.yaml
@@ -0,0 +1,86 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/spacemit,p1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SpacemiT P1 Power Management Integrated Circuit
+
+maintainers:
+  - Troy Mitchell <troymitchell988@gmail.com>
+
+description:
+  P1 is an I2C-controlled PMIC produced by SpacemiT.  It implements six
+  constant-on-time buck converters and twelve low-dropout regulators.
+  It also contains a load switch, watchdog timer, real-time clock, eight
+  12-bit ADC channels, and six GPIOs.  Additional details are available
+  in the "Power Stone/P1" section at the following link.
+    https://developer.spacemit.com/documentation
+
+properties:
+  compatible:
+    const: spacemit,p1
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vin-supply:
+    description: Input supply phandle.
+
+  regulators:
+    type: object
+
+    patternProperties:
+      "^(buck[1-6]|aldo[1-4]|dldo[1-7])$":
+        type: object
+        $ref: /schemas/regulator/regulator.yaml#
+        unevaluatedProperties: false
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic@41 {
+            compatible = "spacemit,p1";
+            reg = <0x41>;
+            interrupts = <64>;
+
+            regulators {
+                buck1 {
+                    regulator-name = "buck1";
+                    regulator-min-microvolt = <500000>;
+                    regulator-max-microvolt = <3450000>;
+                    regulator-ramp-delay = <5000>;
+                    regulator-always-on;
+                };
+
+                aldo1 {
+                    regulator-name = "aldo1";
+                    regulator-min-microvolt = <500000>;
+                    regulator-max-microvolt = <3400000>;
+                    regulator-boot-on;
+                };
+
+                dldo1 {
+                    regulator-name = "dldo1";
+                    regulator-min-microvolt = <500000>;
+                    regulator-max-microvolt = <3400000>;
+                    regulator-boot-on;
+                };
+            };
+        };
+    };
-- 
2.45.2

Hi Alex,

Before the patch body, there's a typo in the subject line: "SpacmiT" ->
"SpacemiT".

On 6/14/25 05:01, Alex Elder wrote:
> Enable the SpacemiT P1, which is an I2C-controlled PMIC.  Initially we
> only the regulators will be supported.
>
> Signed-off-by: Alex Elder <elder@riscstar.com>
> ---
>  .../devicetree/bindings/mfd/spacemit,p1.yaml  | 86 +++++++++++++++++++
>  1 file changed, 86 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/spacemit,p1.yaml
>
> <snip>
>
> +
> +examples:
> +  - |
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        pmic@41 {
> +            compatible = "spacemit,p1";
> +            reg = <0x41>;
> +            interrupts = <64>;
> +

(Not really a review, just a note.)

I couldn't believe it at first, but it looks like the SpacemiT K1 really
does have PLIC interrupt 64 dedicated to receiving PMIC interrupt [1]
over pin "PMIC_INT_N".

Regards,
Vivian "dramforever" Wang

[1]: https://developer.spacemit.com/documentation?token=AZsXwVrqaisaDGkUqMWcNuMVnPb

> <snip>

On 6/19/25 1:03 AM, Vivian Wang wrote:
> Hi Alex,
> 
> Before the patch body, there's a typo in the subject line: "SpacmiT" ->
> "SpacemiT".

Thank you, I will fix that in v2, which I plan to post today.

					-Alex

> On 6/14/25 05:01, Alex Elder wrote:
>> Enable the SpacemiT P1, which is an I2C-controlled PMIC.  Initially we
>> only the regulators will be supported.
>>
>> Signed-off-by: Alex Elder <elder@riscstar.com>
>> ---
>>   .../devicetree/bindings/mfd/spacemit,p1.yaml  | 86 +++++++++++++++++++
>>   1 file changed, 86 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/mfd/spacemit,p1.yaml
>>
>> <snip>
>>
>> +
>> +examples:
>> +  - |
>> +    i2c {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +
>> +        pmic@41 {
>> +            compatible = "spacemit,p1";
>> +            reg = <0x41>;
>> +            interrupts = <64>;
>> +
> 
> (Not really a review, just a note.)
> 
> I couldn't believe it at first, but it looks like the SpacemiT K1 really
> does have PLIC interrupt 64 dedicated to receiving PMIC interrupt [1]
> over pin "PMIC_INT_N".
> 
> Regards,
> Vivian "dramforever" Wang
> 
> [1]: https://developer.spacemit.com/documentation?token=AZsXwVrqaisaDGkUqMWcNuMVnPb
> 
>> <snip>
>