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| -rw-r--r-- | Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator.yaml | 158 | ||||
| -rw-r--r-- | MAINTAINERS | 1 | ||||
| -rw-r--r-- | include/dt-bindings/regulator/samsung,s2mpg10-regulator.h | 39 |
3 files changed, 198 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator.yaml b/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator.yaml new file mode 100644 index 000000000000..7252f94b3a8f --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/samsung,s2mpg10-regulator.yaml @@ -0,0 +1,158 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/samsung,s2mpg10-regulator.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung S2MPG10 Power Management IC regulators + +maintainers: + - André Draszik <andre.draszik@linaro.org> + +description: | + This is part of the device tree bindings for the S2MG10 Power Management IC + (PMIC). + + The S2MPG10 PMIC provides 10 buck and 31 LDO regulators. + + See also Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml for + additional information and example. + +properties: + # 1 LDO with possible (but limited) external control + ldo20m: + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + allOf: + - $ref: "#/$defs/s2mpg10-ext-control" + + properties: + regulator-ramp-delay: false + + samsung,ext-control: + minimum: 11 + +patternProperties: + # 10 bucks + "^buck([1-9]|10)m$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single buck regulator. + + allOf: + - $ref: "#/$defs/s2mpg10-ext-control" + + properties: + regulator-ramp-delay: + enum: [6250, 12500, 25000] + default: 6250 + + samsung,ext-control: + maximum: 10 + + # 12 standard LDOs + "^ldo(2[1-9]?|3[0-1])m$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for single LDO regulator. + + properties: + regulator-ramp-delay: false + + # 12 LDOs with possible external control + "^ldo([3-689]|1[046-9])m$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + allOf: + - $ref: "#/$defs/s2mpg10-ext-control" + + properties: + regulator-ramp-delay: false + + samsung,ext-control: + maximum: 10 + + # 6 LDOs with ramp support, 5 out of those with possible external control + "^ldo(1[1235]?|7)m$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + Properties for a single LDO regulator. + + allOf: + - $ref: "#/$defs/s2mpg10-ext-control" + + properties: + regulator-ramp-delay: + enum: [6250, 12500] + default: 6250 + + samsung,ext-control: + maximum: 10 + +$defs: + s2mpg10-ext-control: + properties: + samsung,ext-control: + description: | + These rails can be controlled via one of several possible external + (hardware) signals. If so, this property configures the signal the PMIC + should monitor. For S2MPG10 rails where external control is possible other + than ldo20m, the following values generally corresponding to the + respective on-chip pin are valid: + - 0 # S2MPG10_EXTCTRL_PWREN - PWREN pin + - 1 # S2MPG10_EXTCTRL_PWREN_MIF - PWREN_MIF pin + - 2 # S2MPG10_EXTCTRL_AP_ACTIVE_N - ~AP_ACTIVE_N pin + - 3 # S2MPG10_EXTCTRL_CPUCL1_EN - CPUCL1_EN pin + - 4 # S2MPG10_EXTCTRL_CPUCL1_EN2 - CPUCL1_EN & PWREN pins + - 5 # S2MPG10_EXTCTRL_CPUCL2_EN - CPUCL2_EN pin + - 6 # S2MPG10_EXTCTRL_CPUCL2_EN2 - CPUCL2_E2 & PWREN pins + - 7 # S2MPG10_EXTCTRL_TPU_EN - TPU_EN pin + - 8 # S2MPG10_EXTCTRL_TPU_EN2 - TPU_EN & ~AP_ACTIVE_N pins + - 9 # S2MPG10_EXTCTRL_TCXO_ON - TCXO_ON pin + - 10 # S2MPG10_EXTCTRL_TCXO_ON2 - TCXO_ON & ~AP_ACTIVE_N pins + + For S2MPG10 ldo20m, the following values are valid + - 11 # S2MPG10_EXTCTRL_LDO20M_EN2 - VLDO20M_EN & LDO20M_SFR + - 12 # S2MPG10_EXTCTRL_LDO20M_EN - VLDO20M_EN pin + + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 12 + + enable-gpios: + description: + For rails where external control is done via a GPIO, this optional + property describes the GPIO line used. + + dependentRequired: + enable-gpios: [ "samsung,ext-control" ] + +allOf: + # Bucks 8, 9, and LDO 1 can not be controlled externally - above definition + # allows it and we deny it here. This approach reduces repetition. + - if: + anyOf: + - required: [buck8m] + - required: [buck9m] + - required: [ldo1m] + then: + patternProperties: + "^(buck[8-9]|ldo1)m$": + properties: + samsung,ext-control: false + +additionalProperties: false diff --git a/MAINTAINERS b/MAINTAINERS index 5b11839cba9d..877c1cddb576 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -23239,6 +23239,7 @@ F: drivers/mfd/sec*.[ch] F: drivers/regulator/s2*.c F: drivers/regulator/s5m*.c F: drivers/rtc/rtc-s5m.c +F: include/dt-bindings/regulator/samsung,s2m*.h F: include/linux/mfd/samsung/ SAMSUNG S3C24XX/S3C64XX SOC SERIES CAMIF DRIVER diff --git a/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h b/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h new file mode 100644 index 000000000000..4a6bf13442f5 --- /dev/null +++ b/include/dt-bindings/regulator/samsung,s2mpg10-regulator.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * Copyright 2021 Google LLC + * Copyright 2025 Linaro Ltd. + * + * Device Tree binding constants for the Samsung S2MPG1x PMIC regulators + */ + +#ifndef _DT_BINDINGS_REGULATOR_SAMSUNG_S2MPG10_H +#define _DT_BINDINGS_REGULATOR_SAMSUNG_S2MPG10_H + +/* + * Several regulators may be controlled via external signals instead of via + * software. These constants describe the possible signals for such regulators + * and generally correspond to the respecitve on-chip pins. + * + * S2MPG10 regulators supporting these are: + * - buck1m .. buck7m buck10m + * - ldo3m .. ldo19m + * + * ldo20m supports external control, but using a different set of control + * signals. + */ +#define S2MPG10_EXTCTRL_PWREN 0 /* PWREN pin */ +#define S2MPG10_EXTCTRL_PWREN_MIF 1 /* PWREN_MIF pin */ +#define S2MPG10_EXTCTRL_AP_ACTIVE_N 2 /* ~AP_ACTIVE_N pin */ +#define S2MPG10_EXTCTRL_CPUCL1_EN 3 /* CPUCL1_EN pin */ +#define S2MPG10_EXTCTRL_CPUCL1_EN2 4 /* CPUCL1_EN & PWREN pins */ +#define S2MPG10_EXTCTRL_CPUCL2_EN 5 /* CPUCL2_EN pin */ +#define S2MPG10_EXTCTRL_CPUCL2_EN2 6 /* CPUCL2_E2 & PWREN pins */ +#define S2MPG10_EXTCTRL_TPU_EN 7 /* TPU_EN pin */ +#define S2MPG10_EXTCTRL_TPU_EN2 8 /* TPU_EN & ~AP_ACTIVE_N pins */ +#define S2MPG10_EXTCTRL_TCXO_ON 9 /* TCXO_ON pin */ +#define S2MPG10_EXTCTRL_TCXO_ON2 10 /* TCXO_ON & ~AP_ACTIVE_N pins */ + +#define S2MPG10_EXTCTRL_LDO20M_EN2 11 /* VLDO20M_EN & LDO20M_SFR */ +#define S2MPG10_EXTCTRL_LDO20M_EN 12 /* VLDO20M_EN pin */ + +#endif /* _DT_BINDINGS_REGULATOR_SAMSUNG_S2MPG10_H */ |