Add a device tree bindings for the board management controller found on the Kontron SMARC-sAL28 board. Signed-off-by: Michael Walle <michael@xxxxxxxx> --- .../bindings/gpio/kontron,sl28cpld-gpio.yaml | 54 +++++++ .../hwmon/kontron,sl28cpld-hwmon.yaml | 27 ++++ .../kontron,sl28cpld-intc.yaml | 54 +++++++ .../bindings/mfd/kontron,sl28cpld.yaml | 153 ++++++++++++++++++ .../bindings/pwm/kontron,sl28cpld-pwm.yaml | 35 ++++ .../watchdog/kontron,sl28cpld-wdt.yaml | 35 ++++ 6 files changed, 358 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/kontron,sl28cpld-gpio.yaml create mode 100644 Documentation/devicetree/bindings/hwmon/kontron,sl28cpld-hwmon.yaml create mode 100644 Documentation/devicetree/bindings/interrupt-controller/kontron,sl28cpld-intc.yaml create mode 100644 Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml create mode 100644 Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml create mode 100644 Documentation/devicetree/bindings/watchdog/kontron,sl28cpld-wdt.yaml diff --git a/Documentation/devicetree/bindings/gpio/kontron,sl28cpld-gpio.yaml b/Documentation/devicetree/bindings/gpio/kontron,sl28cpld-gpio.yaml new file mode 100644 index 000000000000..9a63a158a796 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/kontron,sl28cpld-gpio.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/kontron,sl28cpld-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO driver for the sl28cpld board management controller + +maintainers: + - Michael Walle <michael@xxxxxxxx> + +description: | + This module is part of the sl28cpld multi-function device. For more + details see Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml. + + There are three flavors of the GPIO controller, one full featured + input/output with interrupt support (kontron,sl28cpld-gpio), one + output-only (kontron,sl28-gpo) and one input-only (kontron,sl28-gpi). + + Each controller supports 8 GPIO lines. + +properties: + compatible: + enum: + - kontron,sl28cpld-gpio + - kontron,sl28cpld-gpi + - kontron,sl28cpld-gpo + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + "#interrupt-cells": + const: 2 + + interrupt-controller: true + + "#gpio-cells": + const: 2 + + gpio-controller: true + + gpio-line-names: + minItems: 1 + maxItems: 8 + +required: + - compatible + - "#gpio-cells" + - gpio-controller + +additionalProperties: false diff --git a/Documentation/devicetree/bindings/hwmon/kontron,sl28cpld-hwmon.yaml b/Documentation/devicetree/bindings/hwmon/kontron,sl28cpld-hwmon.yaml new file mode 100644 index 000000000000..1cebd61c6c32 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/kontron,sl28cpld-hwmon.yaml @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/kontron,sl28cpld-hwmon.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Hardware monitoring driver for the sl28cpld board management controller + +maintainers: + - Michael Walle <michael@xxxxxxxx> + +description: | + This module is part of the sl28cpld multi-function device. For more + details see Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml. + +properties: + compatible: + enum: + - kontron,sl28cpld-fan + + reg: + maxItems: 1 + +required: + - compatible + +additionalProperties: false diff --git a/Documentation/devicetree/bindings/interrupt-controller/kontron,sl28cpld-intc.yaml b/Documentation/devicetree/bindings/interrupt-controller/kontron,sl28cpld-intc.yaml new file mode 100644 index 000000000000..4c39e9ff9aea --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/kontron,sl28cpld-intc.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/kontron,sl28cpld-intc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Interrupt controller driver for the sl28cpld board management controller + +maintainers: + - Michael Walle <michael@xxxxxxxx> + +description: | + This module is part of the sl28cpld multi-function device. For more + details see Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml. + + The following interrupts are available. All types and levels are fixed + and handled by the board management controller. + + ==== ============= ================================== + IRQ line/device description + ==== ============= ================================== + 0 RTC_INT# Interrupt line from on-board RTC + 1 SMB_ALERT# Event on SMB_ALERT# line (P1) + 2 ESPI_ALERT0# Event on ESPI_ALERT0# line (S43) + 3 ESPI_ALERT1# Event on ESPI_ALERT1# line (S44) + 4 PWR_BTN# Event on PWR_BTN# line (P128) + 5 SLEEP# Event on SLEEP# line (S149) + 6 watchdog Interrupt of the internal watchdog + 7 n/a not used + ==== ============= ================================== + +properties: + compatible: + enum: + - kontron,sl28cpld-intc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + "#interrupt-cells": + const: 2 + + interrupt-controller: true + +required: + - compatible + - interrupts + - "#interrupt-cells" + - interrupt-controller + +additionalProperties: false diff --git a/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml b/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml new file mode 100644 index 000000000000..1d13bb24afb8 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml @@ -0,0 +1,153 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/kontron,sl28cpld.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Kontron's sl28cpld board management controller + +maintainers: + - Michael Walle <michael@xxxxxxxx> + +description: | + The board management controller may contain different IP blocks like + watchdog, fan monitoring, PWM controller, interrupt controller and a + GPIO controller. + +properties: + compatible: + const: kontron,sl28cpld-r1 + + reg: + description: + I2C device address. + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + "#interrupt-cells": + const: 2 + + interrupts: + maxItems: 1 + + interrupt-controller: true + +patternProperties: + "^gpio(@[0-9]+)?$": + $ref: ../gpio/kontron,sl28cpld-gpio.yaml + + "^hwmon(@[0-9]+)?$": + $ref: ../hwmon/kontron,sl28cpld-hwmon.yaml + + "^interrupt-controller(@[0-9]+)?$": + $ref: ../interrupt-controller/kontron,sl28cpld-intc.yaml + + "^pwm(@[0-9]+)?$": + $ref: ../pwm/kontron,sl28cpld-pwm.yaml + + "^watchdog(@[0-9]+)?$": + $ref: ../watchdog/kontron,sl28cpld-wdt.yaml + +required: + - "#address-cells" + - "#size-cells" + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + + sl28cpld@4a { + #address-cells = <1>; + #size-cells = <0>; + compatible = "kontron,sl28cpld-r1"; + reg = <0x4a>; + + watchdog@4 { + compatible = "kontron,sl28cpld-wdt"; + reg = <0x4>; + kontron,assert-wdt-timeout-pin; + }; + + hwmon@b { + compatible = "kontron,sl28cpld-fan"; + reg = <0xb>; + }; + + pwm@c { + #pwm-cells = <2>; + compatible = "kontron,sl28cpld-pwm"; + reg = <0xc>; + }; + + pwm@e { + #pwm-cells = <2>; + compatible = "kontron,sl28cpld-pwm"; + reg = <0xe>; + }; + + gpio@10 { + compatible = "kontron,sl28cpld-gpio"; + reg = <0x10>; + interrupts-extended = <&gpio2 6 + IRQ_TYPE_EDGE_FALLING>; + + gpio-controller; + #gpio-cells = <2>; + gpio-line-names = "a", "b", "c"; + + interrupt-controller; + #interrupt-cells = <2>; + }; + + gpio@15 { + compatible = "kontron,sl28cpld-gpio"; + reg = <0x15>; + interrupts-extended = <&gpio2 6 + IRQ_TYPE_EDGE_FALLING>; + + gpio-controller; + #gpio-cells = <2>; + + interrupt-controller; + #interrupt-cells = <2>; + }; + + gpio@1a { + compatible = "kontron,sl28cpld-gpo"; + reg = <0x1a>; + + gpio-controller; + #gpio-cells = <2>; + }; + + gpio@1b { + compatible = "kontron,sl28cpld-gpi"; + reg = <0x1b>; + + gpio-controller; + #gpio-cells = <2>; + }; + + interrupt-controller@1c { + compatible = "kontron,sl28cpld-intc"; + reg = <0x1c>; + interrupts-extended = <&gpio2 6 + IRQ_TYPE_EDGE_FALLING>; + + interrupt-controller; + #interrupt-cells = <2>; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml b/Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml new file mode 100644 index 000000000000..02fe88c30233 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/kontron,sl28cpld-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: PWM driver for the sl28cpld board management controller + +maintainers: + - Michael Walle <michael@xxxxxxxx> + +description: | + This module is part of the sl28cpld multi-function device. For more + details see Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml. + + The controller supports one PWM channel and supports only four distinct + frequencies (250Hz, 500Hz, 1kHz, 2kHz). + +allOf: + - $ref: pwm.yaml# + +properties: + compatible: + const: kontron,sl28cpld-pwm + + reg: + maxItems: 1 + + "#pwm-cells": + const: 2 + +required: + - compatible + +additionalProperties: false diff --git a/Documentation/devicetree/bindings/watchdog/kontron,sl28cpld-wdt.yaml b/Documentation/devicetree/bindings/watchdog/kontron,sl28cpld-wdt.yaml new file mode 100644 index 000000000000..dd6559f2973a --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/kontron,sl28cpld-wdt.yaml @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/kontron,sl28cpld-wdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Watchdog driver for the sl28cpld board management controller + +maintainers: + - Michael Walle <michael@xxxxxxxx> + +description: | + This module is part of the sl28cpld multi-function device. For more + details see Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml. + +allOf: + - $ref: watchdog.yaml# + +properties: + compatible: + const: kontron,sl28cpld-wdt + + reg: + maxItems: 1 + + kontron,assert-wdt-timeout-pin: + description: The SMARC standard defines a WDT_TIME_OUT# pin. If this + property is set, this output will be pulsed when the watchdog bites + and the system resets. + type: boolean + +required: + - compatible + +additionalProperties: false -- 2.20.1
