Convert the common LEDs properties bindings to a schema. As trigger source
providers are different nodes, we need to split trigger source properties
to a separate file.
Bindings for LED controllers can reference the common schema for the LED
child nodes:
patternProperties:
"^led@[0-4]":
type: object
allOf:
- $ref: common.yaml#
Cc: Pavel Machek <[email protected]>
Cc: Dan Murphy <[email protected]>
Cc: [email protected]
Acked-by: Jacek Anaszewski <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
---
Jacek, Please take this via led tree
v2:
- Fix typo in function
.../devicetree/bindings/leds/common.txt | 174 +------------
.../devicetree/bindings/leds/common.yaml | 228 ++++++++++++++++++
.../bindings/leds/trigger-source.yaml | 24 ++
3 files changed, 253 insertions(+), 173 deletions(-)
create mode 100644 Documentation/devicetree/bindings/leds/common.yaml
create mode 100644 Documentation/devicetree/bindings/leds/trigger-source.yaml
diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
index 9fa6f9795d50..26d770ef3601 100644
--- a/Documentation/devicetree/bindings/leds/common.txt
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -1,173 +1 @@
-* Common leds properties.
-
-LED and flash LED devices provide the same basic functionality as current
-regulators, but extended with LED and flash LED specific features like
-blinking patterns, flash timeout, flash faults and external flash strobe mode.
-
-Many LED devices expose more than one current output that can be connected
-to one or more discrete LED component. Since the arrangement of connections
-can influence the way of the LED device initialization, the LED components
-have to be tightly coupled with the LED device binding. They are represented
-by child nodes of the parent LED device binding.
-
-
-Optional properties for child nodes:
-- led-sources : List of device current outputs the LED is connected to. The
- outputs are identified by the numbers that must be defined
- in the LED device binding documentation.
-
-- function: LED functon. Use one of the LED_FUNCTION_* prefixed definitions
- from the header include/dt-bindings/leds/common.h.
- If there is no matching LED_FUNCTION available, add a new one.
-
-- color : Color of the LED. Use one of the LED_COLOR_ID_* prefixed definitions
- from the header include/dt-bindings/leds/common.h.
- If there is no matching LED_COLOR_ID available, add a new one.
-
-- function-enumerator: Integer to be used when more than one instance
- of the same function is needed, differing only with
- an ordinal number.
-
-- label : The label for this LED. If omitted, the label is taken from the node
- name (excluding the unit address). It has to uniquely identify
- a device, i.e. no other LED class device can be assigned the same
- label. This property is deprecated - use 'function' and 'color'
- properties instead. function-enumerator has no effect when this
- property is present.
-
-- default-state : The initial state of the LED. Valid values are "on", "off",
- and "keep". If the LED is already on or off and the default-state property is
- set the to same value, then no glitch should be produced where the LED
- momentarily turns off (or on). The "keep" setting will keep the LED at
- whatever its current state is, without producing a glitch. The default is
- off if this property is not present.
-
-- linux,default-trigger : This parameter, if present, is a
- string defining the trigger assigned to the LED. Current triggers are:
- "backlight" - LED will act as a back-light, controlled by the framebuffer
- system
- "default-on" - LED will turn on (but for leds-gpio see "default-state"
- property in Documentation/devicetree/bindings/leds/leds-gpio.txt)
- "heartbeat" - LED "double" flashes at a load average based rate
- "disk-activity" - LED indicates disk activity
- "ide-disk" - LED indicates IDE disk activity (deprecated),
- in new implementations use "disk-activity"
- "timer" - LED flashes at a fixed, configurable rate
- "pattern" - LED alters the brightness for the specified duration with one
- software timer (requires "led-pattern" property)
-
-- led-pattern : Array of integers with default pattern for certain triggers.
- Each trigger may parse this property differently:
- - one-shot : two numbers specifying delay on and delay off (in ms),
- - timer : two numbers specifying delay on and delay off (in ms),
- - pattern : the pattern is given by a series of tuples, of
- brightness and duration (in ms). The exact format is
- described in:
- Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
-
-
-- led-max-microamp : Maximum LED supply current in microamperes. This property
- can be made mandatory for the board configurations
- introducing a risk of hardware damage in case an excessive
- current is set.
- For flash LED controllers with configurable current this
- property is mandatory for the LEDs in the non-flash modes
- (e.g. torch or indicator).
-
-- panic-indicator : This property specifies that the LED should be used,
- if at all possible, as a panic indicator.
-
-- trigger-sources : List of devices which should be used as a source triggering
- this LED activity. Some LEDs can be related to a specific
- device and should somehow indicate its state. E.g. USB 2.0
- LED may react to device(s) in a USB 2.0 port(s).
- Another common example is switch or router with multiple
- Ethernet ports each of them having its own LED assigned
- (assuming they are not hardwired). In such cases this
- property should contain phandle(s) of related source
- device(s).
- In many cases LED can be related to more than one device
- (e.g. one USB LED vs. multiple USB ports). Each source
- should be represented by a node in the device tree and be
- referenced by a phandle and a set of phandle arguments. A
- length of arguments should be specified by the
- #trigger-source-cells property in the source node.
-
-Required properties for flash LED child nodes:
-- flash-max-microamp : Maximum flash LED supply current in microamperes.
-- flash-max-timeout-us : Maximum timeout in microseconds after which the flash
- LED is turned off.
-
-For controllers that have no configurable current the flash-max-microamp
-property can be omitted.
-For controllers that have no configurable timeout the flash-max-timeout-us
-property can be omitted.
-
-* Trigger source providers
-
-Each trigger source should be represented by a device tree node. It may be e.g.
-a USB port or an Ethernet device.
-
-Required properties for trigger source:
-- #trigger-source-cells : Number of cells in a source trigger. Typically 0 for
- nodes of simple trigger sources (e.g. a specific USB
- port).
-
-* Examples
-
-#include <dt-bindings/leds/common.h>
-
-led-controller@0 {
- compatible = "gpio-leds";
-
- led0 {
- function = LED_FUNCTION_STATUS;
- linux,default-trigger = "heartbeat";
- gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
- };
-
- led1 {
- function = LED_FUNCTION_USB;
- gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
- trigger-sources = <&ohci_port1>, <&ehci_port1>;
- };
-};
-
-led-controller@0 {
- compatible = "maxim,max77693-led";
-
- led {
- function = LED_FUNCTION_FLASH;
- color = <LED_COLOR_ID_WHITE>;
- led-sources = <0>, <1>;
- led-max-microamp = <50000>;
- flash-max-microamp = <320000>;
- flash-max-timeout-us = <500000>;
- };
-};
-
-led-controller@30 {
- compatible = "panasonic,an30259a";
- reg = <0x30>;
- #address-cells = <1>;
- #size-cells = <0>;
-
- led@1 {
- reg = <1>;
- linux,default-trigger = "heartbeat";
- function = LED_FUNCTION_INDICATOR;
- function-enumerator = <1>;
- };
-
- led@2 {
- reg = <2>;
- function = LED_FUNCTION_INDICATOR;
- function-enumerator = <2>;
- };
-
- led@3 {
- reg = <3>;
- function = LED_FUNCTION_INDICATOR;
- function-enumerator = <3>;
- };
-};
+This file has moved to ./common.yaml.
diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
new file mode 100644
index 000000000000..d97d099b87e5
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -0,0 +1,228 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/common.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Common leds properties
+
+maintainers:
+ - Jacek Anaszewski <[email protected]>
+ - Pavel Machek <[email protected]>
+
+description:
+ LED and flash LED devices provide the same basic functionality as current
+ regulators, but extended with LED and flash LED specific features like
+ blinking patterns, flash timeout, flash faults and external flash strobe mode.
+
+ Many LED devices expose more than one current output that can be connected
+ to one or more discrete LED component. Since the arrangement of connections
+ can influence the way of the LED device initialization, the LED components
+ have to be tightly coupled with the LED device binding. They are represented
+ by child nodes of the parent LED device binding.
+
+properties:
+ led-sources:
+ description:
+ List of device current outputs the LED is connected to. The outputs are
+ identified by the numbers that must be defined in the LED device binding
+ documentation.
+ $ref: /schemas/types.yaml#definitions/uint32-array
+
+ function:
+ description:
+ LED function. Use one of the LED_FUNCTION_* prefixed definitions
+ from the header include/dt-bindings/leds/common.h. If there is no
+ matching LED_FUNCTION available, add a new one.
+ $ref: /schemas/types.yaml#definitions/string
+
+ color:
+ description:
+ Color of the LED. Use one of the LED_COLOR_ID_* prefixed definitions from
+ the header include/dt-bindings/leds/common.h. If there is no matching
+ LED_COLOR_ID available, add a new one.
+ allOf:
+ - $ref: /schemas/types.yaml#definitions/uint32
+ minimum: 0
+ maximum: 8
+
+ function-enumerator:
+ description:
+ Integer to be used when more than one instance of the same function is
+ needed, differing only with an ordinal number.
+ $ref: /schemas/types.yaml#definitions/uint32
+
+ label:
+ description:
+ The label for this LED. If omitted, the label is taken from the node name
+ (excluding the unit address). It has to uniquely identify a device, i.e.
+ no other LED class device can be assigned the same label. This property is
+ deprecated - use 'function' and 'color' properties instead.
+ function-enumerator has no effect when this property is present.
+
+ default-state:
+ description:
+ The initial state of the LED. If the LED is already on or off and the
+ default-state property is set the to same value, then no glitch should be
+ produced where the LED momentarily turns off (or on). The "keep" setting
+ will keep the LED at whatever its current state is, without producing a
+ glitch.
+ allOf:
+ - $ref: /schemas/types.yaml#definitions/string
+ enum:
+ - on
+ - off
+ - keep
+ default: off
+
+ linux,default-trigger:
+ description:
+ This parameter, if present, is a string defining the trigger assigned to
+ the LED.
+ allOf:
+ - $ref: /schemas/types.yaml#definitions/string
+ enum:
+ # LED will act as a back-light, controlled by the framebuffer system
+ - backlight
+ # LED will turn on (but for leds-gpio see "default-state" property in
+ # Documentation/devicetree/bindings/leds/leds-gpio.txt)
+ - default-on
+ # LED "double" flashes at a load average based rate
+ - heartbeat
+ # LED indicates disk activity
+ - disk-activity
+ # LED indicates IDE disk activity (deprecated), in new implementations
+ # use "disk-activity"
+ - ide-disk
+ # LED flashes at a fixed, configurable rate
+ - timer
+ # LED alters the brightness for the specified duration with one software
+ # timer (requires "led-pattern" property)
+ - pattern
+
+ led-pattern:
+ description: |
+ Array of integers with default pattern for certain triggers.
+
+ Each trigger may parse this property differently:
+ - one-shot : two numbers specifying delay on and delay off (in ms),
+ - timer : two numbers specifying delay on and delay off (in ms),
+ - pattern : the pattern is given by a series of tuples, of
+ brightness and duration (in ms). The exact format is
+ described in:
+ Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
+ allOf:
+ - $ref: /schemas/types.yaml#definitions/uint32-matrix
+ items:
+ minItems: 2
+ maxItems: 2
+
+ led-max-microamp:
+ description:
+ Maximum LED supply current in microamperes. This property can be made
+ mandatory for the board configurations introducing a risk of hardware
+ damage in case an excessive current is set.
+ For flash LED controllers with configurable current this property is
+ mandatory for the LEDs in the non-flash modes (e.g. torch or indicator).
+
+ panic-indicator:
+ description:
+ This property specifies that the LED should be used, if at all possible,
+ as a panic indicator.
+ type: boolean
+
+ trigger-sources:
+ description: |
+ List of devices which should be used as a source triggering this LED
+ activity. Some LEDs can be related to a specific device and should somehow
+ indicate its state. E.g. USB 2.0 LED may react to device(s) in a USB 2.0
+ port(s).
+ Another common example is switch or router with multiple Ethernet ports
+ each of them having its own LED assigned (assuming they are not
+ hardwired). In such cases this property should contain phandle(s) of
+ related source device(s).
+ In many cases LED can be related to more than one device (e.g. one USB LED
+ vs. multiple USB ports). Each source should be represented by a node in
+ the device tree and be referenced by a phandle and a set of phandle
+ arguments. A length of arguments should be specified by the
+ #trigger-source-cells property in the source node.
+ $ref: /schemas/types.yaml#definitions/phandle-array
+
+ # Required properties for flash LED child nodes:
+ flash-max-microamp:
+ description:
+ Maximum flash LED supply current in microamperes. Required for flash LED
+ nodes with configurable current.
+
+ flash-max-timeout-us:
+ description:
+ Maximum timeout in microseconds after which the flash LED is turned off.
+ Required for flash LED nodes with configurable timeout.
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/leds/common.h>
+
+ led-controller {
+ compatible = "gpio-leds";
+
+ led0 {
+ function = LED_FUNCTION_STATUS;
+ linux,default-trigger = "heartbeat";
+ gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+ };
+
+ led1 {
+ function = LED_FUNCTION_USB;
+ gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
+ trigger-sources = <&ohci_port1>, <&ehci_port1>;
+ };
+ };
+
+ led-controller@0 {
+ compatible = "maxim,max77693-led";
+ reg = <0 0x100>;
+
+ led {
+ function = LED_FUNCTION_FLASH;
+ color = <LED_COLOR_ID_WHITE>;
+ led-sources = <0>, <1>;
+ led-max-microamp = <50000>;
+ flash-max-microamp = <320000>;
+ flash-max-timeout-us = <500000>;
+ };
+ };
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led-controller@30 {
+ compatible = "panasonic,an30259a";
+ reg = <0x30>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led@1 {
+ reg = <1>;
+ linux,default-trigger = "heartbeat";
+ function = LED_FUNCTION_INDICATOR;
+ function-enumerator = <1>;
+ };
+
+ led@2 {
+ reg = <2>;
+ function = LED_FUNCTION_INDICATOR;
+ function-enumerator = <2>;
+ };
+
+ led@3 {
+ reg = <3>;
+ function = LED_FUNCTION_INDICATOR;
+ function-enumerator = <3>;
+ };
+ };
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/leds/trigger-source.yaml b/Documentation/devicetree/bindings/leds/trigger-source.yaml
new file mode 100644
index 000000000000..0618003e40bd
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/trigger-source.yaml
@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/trigger-source.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trigger source providers
+
+maintainers:
+ - Jacek Anaszewski <[email protected]>
+ - Pavel Machek <[email protected]>
+
+description:
+ Each trigger source provider should be represented by a device tree node. It
+ may be e.g. a USB port or an Ethernet device.
+
+properties:
+ '#trigger-source-cells':
+ description:
+ Number of cells in a source trigger. Typically 0 for nodes of simple
+ trigger sources (e.g. a specific USB port).
+ enum: [ 0, 1 ]
+
+...
--
2.20.1
On 1/8/20 1:17 AM, Rob Herring wrote:
> Convert the common LEDs properties bindings to a schema. As trigger source
> providers are different nodes, we need to split trigger source properties
> to a separate file.
>
> Bindings for LED controllers can reference the common schema for the LED
> child nodes:
>
> patternProperties:
> "^led@[0-4]":
> type: object
> allOf:
> - $ref: common.yaml#
>
> Cc: Pavel Machek <[email protected]>
> Cc: Dan Murphy <[email protected]>
> Cc: [email protected]
> Acked-by: Jacek Anaszewski <[email protected]>
> Signed-off-by: Rob Herring <[email protected]>
> ---
> Jacek, Please take this via led tree
Currently Pavel maintains LED tree. Pavel?
> v2:
> - Fix typo in function
>
> .../devicetree/bindings/leds/common.txt | 174 +------------
> .../devicetree/bindings/leds/common.yaml | 228 ++++++++++++++++++
> .../bindings/leds/trigger-source.yaml | 24 ++
> 3 files changed, 253 insertions(+), 173 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/leds/common.yaml
> create mode 100644 Documentation/devicetree/bindings/leds/trigger-source.yaml
>
> diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
> index 9fa6f9795d50..26d770ef3601 100644
> --- a/Documentation/devicetree/bindings/leds/common.txt
> +++ b/Documentation/devicetree/bindings/leds/common.txt
> @@ -1,173 +1 @@
> -* Common leds properties.
> -
> -LED and flash LED devices provide the same basic functionality as current
> -regulators, but extended with LED and flash LED specific features like
> -blinking patterns, flash timeout, flash faults and external flash strobe mode.
> -
> -Many LED devices expose more than one current output that can be connected
> -to one or more discrete LED component. Since the arrangement of connections
> -can influence the way of the LED device initialization, the LED components
> -have to be tightly coupled with the LED device binding. They are represented
> -by child nodes of the parent LED device binding.
> -
> -
> -Optional properties for child nodes:
> -- led-sources : List of device current outputs the LED is connected to. The
> - outputs are identified by the numbers that must be defined
> - in the LED device binding documentation.
> -
> -- function: LED functon. Use one of the LED_FUNCTION_* prefixed definitions
> - from the header include/dt-bindings/leds/common.h.
> - If there is no matching LED_FUNCTION available, add a new one.
> -
> -- color : Color of the LED. Use one of the LED_COLOR_ID_* prefixed definitions
> - from the header include/dt-bindings/leds/common.h.
> - If there is no matching LED_COLOR_ID available, add a new one.
> -
> -- function-enumerator: Integer to be used when more than one instance
> - of the same function is needed, differing only with
> - an ordinal number.
> -
> -- label : The label for this LED. If omitted, the label is taken from the node
> - name (excluding the unit address). It has to uniquely identify
> - a device, i.e. no other LED class device can be assigned the same
> - label. This property is deprecated - use 'function' and 'color'
> - properties instead. function-enumerator has no effect when this
> - property is present.
> -
> -- default-state : The initial state of the LED. Valid values are "on", "off",
> - and "keep". If the LED is already on or off and the default-state property is
> - set the to same value, then no glitch should be produced where the LED
> - momentarily turns off (or on). The "keep" setting will keep the LED at
> - whatever its current state is, without producing a glitch. The default is
> - off if this property is not present.
> -
> -- linux,default-trigger : This parameter, if present, is a
> - string defining the trigger assigned to the LED. Current triggers are:
> - "backlight" - LED will act as a back-light, controlled by the framebuffer
> - system
> - "default-on" - LED will turn on (but for leds-gpio see "default-state"
> - property in Documentation/devicetree/bindings/leds/leds-gpio.txt)
> - "heartbeat" - LED "double" flashes at a load average based rate
> - "disk-activity" - LED indicates disk activity
> - "ide-disk" - LED indicates IDE disk activity (deprecated),
> - in new implementations use "disk-activity"
> - "timer" - LED flashes at a fixed, configurable rate
> - "pattern" - LED alters the brightness for the specified duration with one
> - software timer (requires "led-pattern" property)
> -
> -- led-pattern : Array of integers with default pattern for certain triggers.
> - Each trigger may parse this property differently:
> - - one-shot : two numbers specifying delay on and delay off (in ms),
> - - timer : two numbers specifying delay on and delay off (in ms),
> - - pattern : the pattern is given by a series of tuples, of
> - brightness and duration (in ms). The exact format is
> - described in:
> - Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
> -
> -
> -- led-max-microamp : Maximum LED supply current in microamperes. This property
> - can be made mandatory for the board configurations
> - introducing a risk of hardware damage in case an excessive
> - current is set.
> - For flash LED controllers with configurable current this
> - property is mandatory for the LEDs in the non-flash modes
> - (e.g. torch or indicator).
> -
> -- panic-indicator : This property specifies that the LED should be used,
> - if at all possible, as a panic indicator.
> -
> -- trigger-sources : List of devices which should be used as a source triggering
> - this LED activity. Some LEDs can be related to a specific
> - device and should somehow indicate its state. E.g. USB 2.0
> - LED may react to device(s) in a USB 2.0 port(s).
> - Another common example is switch or router with multiple
> - Ethernet ports each of them having its own LED assigned
> - (assuming they are not hardwired). In such cases this
> - property should contain phandle(s) of related source
> - device(s).
> - In many cases LED can be related to more than one device
> - (e.g. one USB LED vs. multiple USB ports). Each source
> - should be represented by a node in the device tree and be
> - referenced by a phandle and a set of phandle arguments. A
> - length of arguments should be specified by the
> - #trigger-source-cells property in the source node.
> -
> -Required properties for flash LED child nodes:
> -- flash-max-microamp : Maximum flash LED supply current in microamperes.
> -- flash-max-timeout-us : Maximum timeout in microseconds after which the flash
> - LED is turned off.
> -
> -For controllers that have no configurable current the flash-max-microamp
> -property can be omitted.
> -For controllers that have no configurable timeout the flash-max-timeout-us
> -property can be omitted.
> -
> -* Trigger source providers
> -
> -Each trigger source should be represented by a device tree node. It may be e.g.
> -a USB port or an Ethernet device.
> -
> -Required properties for trigger source:
> -- #trigger-source-cells : Number of cells in a source trigger. Typically 0 for
> - nodes of simple trigger sources (e.g. a specific USB
> - port).
> -
> -* Examples
> -
> -#include <dt-bindings/leds/common.h>
> -
> -led-controller@0 {
> - compatible = "gpio-leds";
> -
> - led0 {
> - function = LED_FUNCTION_STATUS;
> - linux,default-trigger = "heartbeat";
> - gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
> - };
> -
> - led1 {
> - function = LED_FUNCTION_USB;
> - gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
> - trigger-sources = <&ohci_port1>, <&ehci_port1>;
> - };
> -};
> -
> -led-controller@0 {
> - compatible = "maxim,max77693-led";
> -
> - led {
> - function = LED_FUNCTION_FLASH;
> - color = <LED_COLOR_ID_WHITE>;
> - led-sources = <0>, <1>;
> - led-max-microamp = <50000>;
> - flash-max-microamp = <320000>;
> - flash-max-timeout-us = <500000>;
> - };
> -};
> -
> -led-controller@30 {
> - compatible = "panasonic,an30259a";
> - reg = <0x30>;
> - #address-cells = <1>;
> - #size-cells = <0>;
> -
> - led@1 {
> - reg = <1>;
> - linux,default-trigger = "heartbeat";
> - function = LED_FUNCTION_INDICATOR;
> - function-enumerator = <1>;
> - };
> -
> - led@2 {
> - reg = <2>;
> - function = LED_FUNCTION_INDICATOR;
> - function-enumerator = <2>;
> - };
> -
> - led@3 {
> - reg = <3>;
> - function = LED_FUNCTION_INDICATOR;
> - function-enumerator = <3>;
> - };
> -};
> +This file has moved to ./common.yaml.
> diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
> new file mode 100644
> index 000000000000..d97d099b87e5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/common.yaml
> @@ -0,0 +1,228 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/leds/common.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Common leds properties
> +
> +maintainers:
> + - Jacek Anaszewski <[email protected]>
> + - Pavel Machek <[email protected]>
> +
> +description:
> + LED and flash LED devices provide the same basic functionality as current
> + regulators, but extended with LED and flash LED specific features like
> + blinking patterns, flash timeout, flash faults and external flash strobe mode.
> +
> + Many LED devices expose more than one current output that can be connected
> + to one or more discrete LED component. Since the arrangement of connections
> + can influence the way of the LED device initialization, the LED components
> + have to be tightly coupled with the LED device binding. They are represented
> + by child nodes of the parent LED device binding.
> +
> +properties:
> + led-sources:
> + description:
> + List of device current outputs the LED is connected to. The outputs are
> + identified by the numbers that must be defined in the LED device binding
> + documentation.
> + $ref: /schemas/types.yaml#definitions/uint32-array
> +
> + function:
> + description:
> + LED function. Use one of the LED_FUNCTION_* prefixed definitions
> + from the header include/dt-bindings/leds/common.h. If there is no
> + matching LED_FUNCTION available, add a new one.
> + $ref: /schemas/types.yaml#definitions/string
> +
> + color:
> + description:
> + Color of the LED. Use one of the LED_COLOR_ID_* prefixed definitions from
> + the header include/dt-bindings/leds/common.h. If there is no matching
> + LED_COLOR_ID available, add a new one.
> + allOf:
> + - $ref: /schemas/types.yaml#definitions/uint32
> + minimum: 0
> + maximum: 8
> +
> + function-enumerator:
> + description:
> + Integer to be used when more than one instance of the same function is
> + needed, differing only with an ordinal number.
> + $ref: /schemas/types.yaml#definitions/uint32
> +
> + label:
> + description:
> + The label for this LED. If omitted, the label is taken from the node name
> + (excluding the unit address). It has to uniquely identify a device, i.e.
> + no other LED class device can be assigned the same label. This property is
> + deprecated - use 'function' and 'color' properties instead.
> + function-enumerator has no effect when this property is present.
> +
> + default-state:
> + description:
> + The initial state of the LED. If the LED is already on or off and the
> + default-state property is set the to same value, then no glitch should be
> + produced where the LED momentarily turns off (or on). The "keep" setting
> + will keep the LED at whatever its current state is, without producing a
> + glitch.
> + allOf:
> + - $ref: /schemas/types.yaml#definitions/string
> + enum:
> + - on
> + - off
> + - keep
> + default: off
> +
> + linux,default-trigger:
> + description:
> + This parameter, if present, is a string defining the trigger assigned to
> + the LED.
> + allOf:
> + - $ref: /schemas/types.yaml#definitions/string
> + enum:
> + # LED will act as a back-light, controlled by the framebuffer system
> + - backlight
> + # LED will turn on (but for leds-gpio see "default-state" property in
> + # Documentation/devicetree/bindings/leds/leds-gpio.txt)
> + - default-on
> + # LED "double" flashes at a load average based rate
> + - heartbeat
> + # LED indicates disk activity
> + - disk-activity
> + # LED indicates IDE disk activity (deprecated), in new implementations
> + # use "disk-activity"
> + - ide-disk
> + # LED flashes at a fixed, configurable rate
> + - timer
> + # LED alters the brightness for the specified duration with one software
> + # timer (requires "led-pattern" property)
> + - pattern
> +
> + led-pattern:
> + description: |
> + Array of integers with default pattern for certain triggers.
> +
> + Each trigger may parse this property differently:
> + - one-shot : two numbers specifying delay on and delay off (in ms),
> + - timer : two numbers specifying delay on and delay off (in ms),
> + - pattern : the pattern is given by a series of tuples, of
> + brightness and duration (in ms). The exact format is
> + described in:
> + Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
> + allOf:
> + - $ref: /schemas/types.yaml#definitions/uint32-matrix
> + items:
> + minItems: 2
> + maxItems: 2
> +
> + led-max-microamp:
> + description:
> + Maximum LED supply current in microamperes. This property can be made
> + mandatory for the board configurations introducing a risk of hardware
> + damage in case an excessive current is set.
> + For flash LED controllers with configurable current this property is
> + mandatory for the LEDs in the non-flash modes (e.g. torch or indicator).
> +
> + panic-indicator:
> + description:
> + This property specifies that the LED should be used, if at all possible,
> + as a panic indicator.
> + type: boolean
> +
> + trigger-sources:
> + description: |
> + List of devices which should be used as a source triggering this LED
> + activity. Some LEDs can be related to a specific device and should somehow
> + indicate its state. E.g. USB 2.0 LED may react to device(s) in a USB 2.0
> + port(s).
> + Another common example is switch or router with multiple Ethernet ports
> + each of them having its own LED assigned (assuming they are not
> + hardwired). In such cases this property should contain phandle(s) of
> + related source device(s).
> + In many cases LED can be related to more than one device (e.g. one USB LED
> + vs. multiple USB ports). Each source should be represented by a node in
> + the device tree and be referenced by a phandle and a set of phandle
> + arguments. A length of arguments should be specified by the
> + #trigger-source-cells property in the source node.
> + $ref: /schemas/types.yaml#definitions/phandle-array
> +
> + # Required properties for flash LED child nodes:
> + flash-max-microamp:
> + description:
> + Maximum flash LED supply current in microamperes. Required for flash LED
> + nodes with configurable current.
> +
> + flash-max-timeout-us:
> + description:
> + Maximum timeout in microseconds after which the flash LED is turned off.
> + Required for flash LED nodes with configurable timeout.
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> + #include <dt-bindings/leds/common.h>
> +
> + led-controller {
> + compatible = "gpio-leds";
> +
> + led0 {
> + function = LED_FUNCTION_STATUS;
> + linux,default-trigger = "heartbeat";
> + gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
> + };
> +
> + led1 {
> + function = LED_FUNCTION_USB;
> + gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
> + trigger-sources = <&ohci_port1>, <&ehci_port1>;
> + };
> + };
> +
> + led-controller@0 {
> + compatible = "maxim,max77693-led";
> + reg = <0 0x100>;
> +
> + led {
> + function = LED_FUNCTION_FLASH;
> + color = <LED_COLOR_ID_WHITE>;
> + led-sources = <0>, <1>;
> + led-max-microamp = <50000>;
> + flash-max-microamp = <320000>;
> + flash-max-timeout-us = <500000>;
> + };
> + };
> +
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + led-controller@30 {
> + compatible = "panasonic,an30259a";
> + reg = <0x30>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + led@1 {
> + reg = <1>;
> + linux,default-trigger = "heartbeat";
> + function = LED_FUNCTION_INDICATOR;
> + function-enumerator = <1>;
> + };
> +
> + led@2 {
> + reg = <2>;
> + function = LED_FUNCTION_INDICATOR;
> + function-enumerator = <2>;
> + };
> +
> + led@3 {
> + reg = <3>;
> + function = LED_FUNCTION_INDICATOR;
> + function-enumerator = <3>;
> + };
> + };
> + };
> +
> +...
> diff --git a/Documentation/devicetree/bindings/leds/trigger-source.yaml b/Documentation/devicetree/bindings/leds/trigger-source.yaml
> new file mode 100644
> index 000000000000..0618003e40bd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/trigger-source.yaml
> @@ -0,0 +1,24 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/leds/trigger-source.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Trigger source providers
> +
> +maintainers:
> + - Jacek Anaszewski <[email protected]>
> + - Pavel Machek <[email protected]>
> +
> +description:
> + Each trigger source provider should be represented by a device tree node. It
> + may be e.g. a USB port or an Ethernet device.
> +
> +properties:
> + '#trigger-source-cells':
> + description:
> + Number of cells in a source trigger. Typically 0 for nodes of simple
> + trigger sources (e.g. a specific USB port).
> + enum: [ 0, 1 ]
> +
> +...
>
--
Best regards,
Jacek Anaszewski
On Wed, Jan 8, 2020 at 1:02 PM Jacek Anaszewski
<[email protected]> wrote:
>
> On 1/8/20 1:17 AM, Rob Herring wrote:
> > Convert the common LEDs properties bindings to a schema. As trigger source
> > providers are different nodes, we need to split trigger source properties
> > to a separate file.
> >
> > Bindings for LED controllers can reference the common schema for the LED
> > child nodes:
> >
> > patternProperties:
> > "^led@[0-4]":
> > type: object
> > allOf:
> > - $ref: common.yaml#
> >
> > Cc: Pavel Machek <[email protected]>
> > Cc: Dan Murphy <[email protected]>
> > Cc: [email protected]
> > Acked-by: Jacek Anaszewski <[email protected]>
> > Signed-off-by: Rob Herring <[email protected]>
> > ---
> > Jacek, Please take this via led tree
>
> Currently Pavel maintains LED tree. Pavel?
As it doesn't look like there's any conflicts, I've applied this
series to the DT tree.
Rob
Hi!
> > > Bindings for LED controllers can reference the common schema for the LED
> > > child nodes:
> > >
> > > patternProperties:
> > > "^led@[0-4]":
> > > type: object
> > > allOf:
> > > - $ref: common.yaml#
> > >
> > > Cc: Pavel Machek <[email protected]>
> > > Cc: Dan Murphy <[email protected]>
> > > Cc: [email protected]
> > > Acked-by: Jacek Anaszewski <[email protected]>
> > > Signed-off-by: Rob Herring <[email protected]>
> > > ---
> > > Jacek, Please take this via led tree
> >
> > Currently Pavel maintains LED tree. Pavel?
>
> As it doesn't look like there's any conflicts, I've applied this
> series to the DT tree.
Thank you!
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html