regulator: dt-bindings: Add TI TPS65219 PMIC bindings

Add TPS65219 PMIC bindings using json-schema.

Describe required properties and regname-supply.
regname-supply is required when bypass mode is used for a regulator.
Describes regulator topology.
Interrupts support.
Add a power-button property to configure the EN/PB/VSENSE pin as a
powerbutton:

TPS65219 has a multipurpose pin called EN/PB/VSENSE that can be either:
- EN in which case it functions as an enable pin.
- VSENSE which compares the voltages and triggers an automatic
on/off request.
- PB in which case it can be configured to trigger an interrupt
to the SoC.
ti,power-button reflects the last one of those options
where the board has a button wired to the pin and triggers
an interrupt on pressing it.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Jerome Neanne <jneanne@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220805121852.21254-5-jneanne@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/regulator/ti,tps65219.yaml b/Documentation/devicetree/bindings/regulator/ti,tps65219.yaml
new file mode 100644 (file)
index 0000000..78be799
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/ti,tps65219.yaml
@@ -0,0 +1,173 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/ti,tps65219.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI tps65219 Power Management Integrated Circuit regulators
+
+maintainers:
+  - Jerome Neanne <jerome.neanne@baylibre.com>
+
+description: |
+  Regulator nodes should be named to buck<number> and ldo<number>.
+
+properties:
+  compatible:
+    enum:
+      - ti,tps65219
+
+  reg:
+    maxItems: 1
+
+  system-power-controller:
+    type: boolean
+    description: Optional property that indicates that this device is
+      controlling system power.
+
+  interrupts:
+    description: Short-circuit, over-current, under-voltage for regulators, PB interrupts.
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    description: Specifies the PIN numbers and Flags, as defined in
+      include/dt-bindings/interrupt-controller/irq.h
+    const: 1
+
+  ti,power-button:
+    type: boolean
+    description: |
+      Optional property that sets the EN/PB/VSENSE pin to be a
+      power-button.
+      TPS65219 has a multipurpose pin called EN/PB/VSENSE that can be either
+      1. EN in which case it functions as an enable pin.
+      2. VSENSE which compares the voltages and triggers an automatic
+      on/off request.
+      3. PB in which case it can be configured to trigger an interrupt
+      to the SoC.
+      ti,power-button reflects the last one of those options
+      where the board has a button wired to the pin and triggers
+      an interrupt on pressing it.
+
+patternProperties:
+  "^buck[1-3]-supply$":
+    description: Input supply phandle of one regulator.
+
+  "^ldo[1-4]-supply$":
+    description: Input supply phandle of one regulator.
+
+  regulators:
+    type: object
+    description: |
+      list of regulators provided by this controller
+
+    patternProperties:
+      "^ldo[1-4]$":
+        type: object
+        $ref: regulator.yaml#
+        description:
+          Properties for single LDO regulator.
+
+        unevaluatedProperties: false
+
+      "^buck[1-3]$":
+        type: object
+        $ref: regulator.yaml#
+        description:
+          Properties for single BUCK regulator.
+
+        unevaluatedProperties: false
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        tps65219: pmic@30 {
+            compatible = "ti,tps65219";
+            reg = <0x30>;
+            buck1-supply = <&vcc_3v3_sys>;
+            buck2-supply = <&vcc_3v3_sys>;
+            buck3-supply = <&vcc_3v3_sys>;
+            ldo1-supply = <&vcc_3v3_sys>;
+            ldo2-supply = <&buck2_reg>;
+            ldo3-supply = <&vcc_3v3_sys>;
+            ldo4-supply = <&vcc_3v3_sys>;
+
+            pinctrl-0 = <&pmic_irq_pins_default>;
+
+            interrupt-parent = <&gic500>;
+            interrupts = <GIC_SPI 224 IRQ_TYPE_LEVEL_HIGH>;
+            ti,power-button;
+
+            regulators {
+                buck1_reg: buck1 {
+                    regulator-name = "VDD_CORE";
+                    regulator-min-microvolt = <750000>;
+                    regulator-max-microvolt = <750000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+
+                buck2_reg: buck2 {
+                    regulator-name = "VCC1V8";
+                    regulator-min-microvolt = <1800000>;
+                    regulator-max-microvolt = <1800000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+
+                buck3_reg: buck3 {
+                    regulator-name = "VDD_LPDDR4";
+                    regulator-min-microvolt = <1100000>;
+                    regulator-max-microvolt = <1100000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+
+                ldo1_reg: ldo1 {
+                    regulator-name = "VDDSHV_SD_IO_PMIC";
+                    regulator-min-microvolt = <33000000>;
+                    regulator-max-microvolt = <33000000>;
+                };
+
+                ldo2_reg: ldo2 {
+                    regulator-name = "VDDAR_CORE";
+                    regulator-min-microvolt = <850000>;
+                    regulator-max-microvolt = <850000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+
+                ldo3_reg: ldo3 {
+                    regulator-name = "VDDA_1V8";
+                    regulator-min-microvolt = <18000000>;
+                    regulator-max-microvolt = <18000000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+
+                ldo4_reg: ldo4 {
+                    regulator-name = "VDD_PHY_2V5";
+                    regulator-min-microvolt = <25000000>;
+                    regulator-max-microvolt = <25000000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+            };
+        };
+    };