dt-bindings: mfd: Add samsung,s2mpg11-pmic

The Samsung S2MPG11 PMIC is similar to the existing S2MPG10 PMIC
supported by this binding, but still differs enough from it to justify
a separate binding.

It is a Power Management IC for mobile applications with buck
converters, various LDOs, power meters, NTC thermistor inputs, and
additional GPIO interfaces and typically complements an S2MPG10 PMIC in
a main/sub configuration as the sub-PMIC.

Like S2MPG10, communication is via the Samsung ACPM firmware and it
therefore needs to be a child of the ACPM firmware node.

Add the PMIC, the regulators node, and the supply inputs of the
regulator rails, with the supply names matching the datasheet.

Note: S2MPG11 is typically used as the sub-PMIC together with an
S2MPG10 PMIC in a main/sub configuration, hence the datasheet and the
binding both suffix the supplies with an 's'.

Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20260122-s2mpg1x-regulators-v7-6-3b1f9831fffd@linaro.org
Signed-off-by: Lee Jones <lee@kernel.org>

Documentation/devicetree/bindings/mfd/samsung,s2mpg11-pmic.yaml

@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/samsung,s2mpg11-pmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung S2MPG11 Power Management IC
+
+maintainers:
+  - André Draszik <andre.draszik@linaro.org>
+
+description: |
+  This is part of the device tree bindings for the S2MPG11 Power Management IC
+  (PMIC).
+
+  The Samsung S2MPG11 is a Power Management IC for mobile applications with buck
+  converters, various LDOs, power meters, NTC thermistor inputs, and additional
+  GPIO interfaces and typically complements an S2MPG10 PMIC in a main/sub
+  configuration as the sub-PMIC.
+
+properties:
+  compatible:
+    const: samsung,s2mpg11-pmic
+
+  interrupts:
+    maxItems: 1
+
+  regulators:
+    type: object
+    $ref: /schemas/regulator/samsung,s2mpg11-regulator.yaml
+    description:
+      List of child nodes that specify the regulators.
+
+  wakeup-source: true
+
+patternProperties:
+  "^vinb(([1-9]|10)s|[abd])-supply$":
+    description:
+      Phandle to the power supply for each buck rail of this PMIC. There is a
+      1:1 mapping of numbered supply to rail, e.g. vinb1s-supply supplies
+      buck1s. The remaining mapping is as follows
+        vinba - bucka
+        vinbb - buck boost
+        vinbd - buckd
+
+  "^vinl[1-6]s-supply$":
+    description: |
+      Phandle to the power supply for one or multiple LDO rails of this PMIC.
+      The mapping of supply to rail(s) is as follows
+        vinl1s - ldo1s, ldo2s
+        vinl2s - ldo8s, ldo9s
+        vinl3s - ldo3s, ldo5s, ldo7s, ldo15s
+        vinl4s - ldo10s, ldo11s, ldo12s, ldo14s
+        vinl5s - ldo4s, ldo6s
+        vinl6s - ldo13s
+
+required:
+  - compatible
+  - interrupts
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/regulator/samsung,s2mpg10-regulator.h>
+
+    pmic {
+        compatible = "samsung,s2mpg11-pmic";
+        interrupts-extended = <&gpa0 7 IRQ_TYPE_LEVEL_LOW>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&pmic_int>;
+        wakeup-source;
+
+        vinl1s-supply = <&buck8m>;
+        vinl2s-supply = <&buck6s>;
+
+        regulators {
+            buckd {
+                regulator-name = "vcc_ufs";
+                regulator-ramp-delay = <6250>;
+                enable-gpios = <&gpp0 1 GPIO_ACTIVE_HIGH>;
+                samsung,ext-control = <S2MPG11_EXTCTRL_UFS_EN>;
+            };
+        };
+    };