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   1 From 13344f8ce8a0d98aa7f5d69ce3b47393c73a343b Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Mon, 27 Dec 2021 15:59:04 +0100
   4 Subject: [PATCH] dt-bindings: leds: add Broadcom's BCM63138 controller
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Broadcom used 2 LEDs hardware blocks for their BCM63xx SoCs:
  10 1. Older one (BCM6318, BCM6328, BCM6362, BCM63268, BCM6838)
  11 2. Newer one (BCM6848, BCM6858, BCM63138, BCM63148, BCM63381, BCM68360)
  12
  13 The newer one was also later also used on BCM4908 SoC.
  14
  15 Old block is already documented in the leds-bcm6328.yaml. This binding
  16 documents the new one which uses different registers & programming. It's
  17 first used in BCM63138 thus the binding name.
  18
  19 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  20 Reviewed-by: Rob Herring <robh@kernel.org>
  21 Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
  22 Signed-off-by: Pavel Machek <pavel@ucw.cz>
  23 ---
  24  .../bindings/leds/leds-bcm63138.yaml          | 95 +++++++++++++++++++
  25  1 file changed, 95 insertions(+)
  26  create mode 100644 Documentation/devicetree/bindings/leds/leds-bcm63138.yaml
  27
  28 --- /dev/null
  29 +++ b/Documentation/devicetree/bindings/leds/leds-bcm63138.yaml
  30 @@ -0,0 +1,95 @@
  31 +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
  32 +%YAML 1.2
  33 +---
  34 +$id: http://devicetree.org/schemas/leds/leds-bcm63138.yaml#
  35 +$schema: http://devicetree.org/meta-schemas/core.yaml#
  36 +
  37 +title: Broadcom's BCM63138 LEDs controller
  38 +
  39 +maintainers:
  40 +  - Rafał Miłecki <rafal@milecki.pl>
  41 +
  42 +description: |
  43 +  This LEDs controller was first used on BCM63138 and later reused on BCM4908,
  44 +  BCM6848, BCM6858, BCM63138, BCM63148, BCM63381 and BCM68360 SoCs.
  45 +
  46 +  It supports up to 32 LEDs that can be connected parallelly or serially. It
  47 +  also includes limited support for hardware blinking.
  48 +
  49 +  Binding serially connected LEDs isn't documented yet.
  50 +
  51 +properties:
  52 +  compatible:
  53 +    oneOf:
  54 +      - items:
  55 +          - enum:
  56 +              - brcm,bcm4908-leds
  57 +              - brcm,bcm6848-leds
  58 +              - brcm,bcm6858-leds
  59 +              - brcm,bcm63148-leds
  60 +              - brcm,bcm63381-leds
  61 +              - brcm,bcm68360-leds
  62 +          - const: brcm,bcm63138-leds
  63 +      - const: brcm,bcm63138-leds
  64 +
  65 +  reg:
  66 +    maxItems: 1
  67 +
  68 +  "#address-cells":
  69 +    const: 1
  70 +
  71 +  "#size-cells":
  72 +    const: 0
  73 +
  74 +patternProperties:
  75 +  "^led@[a-f0-9]+$":
  76 +    type: object
  77 +
  78 +    $ref: common.yaml#
  79 +
  80 +    properties:
  81 +      reg:
  82 +        maxItems: 1
  83 +        description: LED pin number
  84 +
  85 +      active-low:
  86 +        type: boolean
  87 +        description: Makes LED active low.
  88 +
  89 +    required:
  90 +      - reg
  91 +
  92 +    unevaluatedProperties: false
  93 +
  94 +required:
  95 +  - reg
  96 +  - "#address-cells"
  97 +  - "#size-cells"
  98 +
  99 +additionalProperties: false
 100 +
 101 +examples:
 102 +  - |
 103 +    #include <dt-bindings/leds/common.h>
 104 +
 105 +    leds@ff800800 {
 106 +        compatible = "brcm,bcm4908-leds", "brcm,bcm63138-leds";
 107 +        reg = <0xff800800 0xdc>;
 108 +
 109 +        #address-cells = <1>;
 110 +        #size-cells = <0>;
 111 +
 112 +        led@0 {
 113 +            reg = <0x0>;
 114 +            function = LED_FUNCTION_POWER;
 115 +            color = <LED_COLOR_ID_GREEN>;
 116 +            default-state = "on";
 117 +        };
 118 +
 119 +        led@3 {
 120 +            reg = <0x3>;
 121 +            function = LED_FUNCTION_STATUS;
 122 +            color = <LED_COLOR_ID_GREEN>;
 123 +            active-low;
 124 +        };
 125 +    };