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126 lines
3.3 KiB
Diff
126 lines
3.3 KiB
Diff
From 13344f8ce8a0d98aa7f5d69ce3b47393c73a343b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Mon, 27 Dec 2021 15:59:04 +0100
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Subject: [PATCH] dt-bindings: leds: add Broadcom's BCM63138 controller
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Broadcom used 2 LEDs hardware blocks for their BCM63xx SoCs:
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1. Older one (BCM6318, BCM6328, BCM6362, BCM63268, BCM6838)
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2. Newer one (BCM6848, BCM6858, BCM63138, BCM63148, BCM63381, BCM68360)
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The newer one was also later also used on BCM4908 SoC.
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Old block is already documented in the leds-bcm6328.yaml. This binding
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documents the new one which uses different registers & programming. It's
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first used in BCM63138 thus the binding name.
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Reviewed-by: Rob Herring <robh@kernel.org>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: Pavel Machek <pavel@ucw.cz>
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---
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.../bindings/leds/leds-bcm63138.yaml | 95 +++++++++++++++++++
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1 file changed, 95 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/leds/leds-bcm63138.yaml
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/leds/leds-bcm63138.yaml
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@@ -0,0 +1,95 @@
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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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+%YAML 1.2
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+---
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+$id: http://devicetree.org/schemas/leds/leds-bcm63138.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: Broadcom's BCM63138 LEDs controller
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+
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+maintainers:
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+ - Rafał Miłecki <rafal@milecki.pl>
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+
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+description: |
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+ This LEDs controller was first used on BCM63138 and later reused on BCM4908,
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+ BCM6848, BCM6858, BCM63138, BCM63148, BCM63381 and BCM68360 SoCs.
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+
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+ It supports up to 32 LEDs that can be connected parallelly or serially. It
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+ also includes limited support for hardware blinking.
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+
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+ Binding serially connected LEDs isn't documented yet.
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+
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+properties:
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+ compatible:
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+ oneOf:
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+ - items:
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+ - enum:
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+ - brcm,bcm4908-leds
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+ - brcm,bcm6848-leds
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+ - brcm,bcm6858-leds
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+ - brcm,bcm63148-leds
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+ - brcm,bcm63381-leds
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+ - brcm,bcm68360-leds
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+ - const: brcm,bcm63138-leds
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+ - const: brcm,bcm63138-leds
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+
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+ reg:
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+ maxItems: 1
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+
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+ "#address-cells":
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+ const: 1
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+
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+ "#size-cells":
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+ const: 0
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+
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+patternProperties:
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+ "^led@[a-f0-9]+$":
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+ type: object
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+
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+ $ref: common.yaml#
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+
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+ properties:
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+ reg:
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+ maxItems: 1
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+ description: LED pin number
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+
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+ active-low:
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+ type: boolean
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+ description: Makes LED active low.
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+
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+ required:
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+ - reg
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+
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+ unevaluatedProperties: false
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+
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+required:
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+ - reg
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+ - "#address-cells"
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+ - "#size-cells"
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+
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+additionalProperties: false
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+
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+examples:
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+ - |
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+ #include <dt-bindings/leds/common.h>
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+
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+ leds@ff800800 {
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+ compatible = "brcm,bcm4908-leds", "brcm,bcm63138-leds";
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+ reg = <0xff800800 0xdc>;
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+
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ led@0 {
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+ reg = <0x0>;
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+ function = LED_FUNCTION_POWER;
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+ color = <LED_COLOR_ID_GREEN>;
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+ default-state = "on";
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+ };
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+
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+ led@3 {
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+ reg = <0x3>;
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+ function = LED_FUNCTION_STATUS;
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+ color = <LED_COLOR_ID_GREEN>;
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+ active-low;
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+ };
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+ };
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