leds-lgm.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/leds/leds-lgm.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Intel Lightning Mountain (LGM) SoC LED Serial Shift Output (SSO) Controller driver
    8 
    9 maintainers:
   10   - Zhu, Yi Xin <Yixin.zhu@intel.com>
   11   - Amireddy Mallikarjuna reddy <mallikarjunax.reddy@intel.com>
   12 
   13 properties:
   14   compatible:
   15     const: intel,lgm-ssoled
   16 
   17   reg:
   18     maxItems: 1
   19 
   20   clocks:
   21     maxItems: 2
   22 
   23   clock-names:
   24     items:
   25       - const: sso
   26       - const: fpid
   27 
   28   gpio-controller: true
   29 
   30   '#gpio-cells':
   31     const: 2
   32 
   33   ngpios:
   34     minimum: 0
   35     maximum: 32
   36     description:
   37       Number of GPIOs this controller provides.
   38 
   39   intel,sso-update-rate-hz:
   40     description:
   41       Blink frequency for SOUTs in Hz.
   42 
   43   led-controller:
   44     type: object
   45     description:
   46       This sub-node must contain a sub-node for each leds.
   47 
   48     additionalProperties: false
   49 
   50     properties:
   51       '#address-cells':
   52         const: 1
   53 
   54       '#size-cells':
   55         const: 0
   56 
   57     patternProperties:
   58       "^led@[0-2]$":
   59         type: object
   60 
   61         properties:
   62           reg:
   63             description: Index of the LED.
   64             minimum: 0
   65             maximum: 2
   66 
   67           intel,sso-hw-trigger:
   68             type: boolean
   69             description: This property indicates Hardware driven/control LED.
   70 
   71           intel,sso-hw-blink:
   72             type: boolean
   73             description: This property indicates Enable LED blink by Hardware.
   74 
   75           intel,sso-blink-rate-hz:
   76             description: LED HW blink frequency.
   77 
   78           retain-state-suspended:
   79             type: boolean
   80             description: The suspend state of LED can be retained.
   81 
   82           retain-state-shutdown:
   83             type: boolean
   84             description: Retain the state of the LED on shutdown.
   85 
   86 required:
   87   - compatible
   88   - reg
   89   - clocks
   90   - clock-names
   91   - "#gpio-cells"
   92   - gpio-controller
   93 
   94 additionalProperties: false
   95 
   96 examples:
   97   - |
   98     #include <dt-bindings/clock/intel,lgm-clk.h>
   99     #include <dt-bindings/leds/common.h>
  100 
  101     ssogpio: ssogpio@e0d40000 {
  102       compatible = "intel,lgm-ssoled";
  103       reg = <0xE0D40000 0x2E4>;
  104       gpio-controller;
  105       #gpio-cells = <2>;
  106       ngpios = <32>;
  107       pinctrl-names = "default";
  108       pinctrl-0 = <&pinctrl_ledc>;
  109       clocks = <&cgu0 LGM_GCLK_LEDC0>, <&afeclk>;
  110       clock-names = "sso", "fpid";
  111       intel,sso-update-rate-hz = <250000>;
  112 
  113       led-controller {
  114         #address-cells = <1>;
  115         #size-cells = <0>;
  116 
  117         led@0 {
  118           reg = <0>;
  119           function = "gphy";
  120           color = <LED_COLOR_ID_GREEN>;
  121           led-gpio = <&ssogpio 0 0>;
  122         };
  123 
  124         led@2 {
  125           reg = <2>;
  126           function = LED_FUNCTION_POWER;
  127           color = <LED_COLOR_ID_GREEN>;
  128           led-gpio = <&ssogpio 23 0>;
  129         };
  130       };
  131     };

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sys/contrib/device-tree/Bindings/leds/leds-lgm.yaml