The Sony Cronos Platform Controller CPLD is a multi-purpose platform controller that provides both a watchdog timer and an LED controller for the Sony Interactive Entertainment Cronos x86 server platform. As both functions are provided by the same CPLD, a multi-function device is exposed as the parent of both functions. Add a DT binding for this device. Signed-off-by: Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx> --- Changes in v2: - Change SIE to Sony to use the already-established prefix. - Clarify that Cronos is an x86 server platform in description - Drop #address-cells/#size-cells - Add missing additionalProperties to leds/watchdog objects - Add sony,led-mask property to leds object - Add sony,default-timeout property to watchdog object - Update example .../bindings/mfd/sony,cronos-cpld.yaml | 92 +++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/sony,cronos-cpld.yaml diff --git a/Documentation/devicetree/bindings/mfd/sony,cronos-cpld.yaml b/Documentation/devicetree/bindings/mfd/sony,cronos-cpld.yaml new file mode 100644 index 000000000000..df2c2e83ccb4 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/sony,cronos-cpld.yaml @@ -0,0 +1,92 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2023 Raptor Engineering, LLC +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/sony,cronos-cpld.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sony Cronos Platform Controller CPLD multi-function device + +maintainers: + - Timothy Pearson <tpearson@xxxxxxxxxxxxxxxxxxxxx> + +description: | + The Sony Cronos Platform Controller CPLD is a multi-purpose platform + controller that provides both a watchdog timer and an LED controller for the + Sony Interactive Entertainment Cronos x86 server platform. As both functions + are provided by the same CPLD, a multi-function device is exposed as the + parent of both functions. + +properties: + compatible: + const: sony,cronos-cpld + + reg: + maxItems: 1 + + leds: + type: object + description: Cronos Platform Status LEDs + + properties: + compatible: + const: sony,cronos-leds + + sony,led-mask: + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0x0 + maximum: 0x7fff + description: | + A bitmask that specifies which LEDs are present and can be controlled + by the Cronos CPLD. Bits 0-5 correspond to platform Status LEDs, bits + 6-10 correspond to Link LEDs, and bits 11-14 correspond to the Power + State LEDs. All other bits are unused. The default value is 0x7fff + (all possible LEDs enabled). + + additionalProperties: false + + watchdog: + type: object + description: Cronos Platform Watchdog Timer + + properties: + compatible: + const: sony,cronos-watchdog + + sony,default-timeout: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + The default timeout with which the watchdog timer is initialized, in + seconds. Supported values are: 10, 20, 30, 40, 50, 60, 70, 80. All + other values will be rounded down to the nearest supported value. The + default value is 80. + + additionalProperties: false + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + cpld@3f { + compatible = "sony,cronos-cpld"; + reg = <0x3f>; + + watchdog { + compatible = "sony,cronos-watchdog"; + sony,default-timeout = <20>; + }; + + leds { + compatible = "sony,cronos-leds"; + sony,led-mask = <0x7fff>; + }; + }; + }; -- 2.30.2
