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From: Jean-Jacques Hiblot <jjhiblot@ti.com>
To: <jacek.anaszewski@gmail.com>, <pavel@ucw.cz>,
	<robh+dt@kernel.org>, <mark.rutland@arm.com>,
	<lee.jones@linaro.org>, <daniel.thompson@linaro.org>
Cc: <dmurphy@ti.com>, <linux-leds@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <dri-devel@lists.freedesktop.org>,
	<tomi.valkeinen@ti.com>, Jean-Jacques Hiblot <jjhiblot@ti.com>
Subject: [PATCH v6 3/4] dt-bindings: backlight: Add led-backlight binding
Date: Tue, 10 Sep 2019 15:27:33 +0200	[thread overview]
Message-ID: <20190910132734.9544-4-jjhiblot@ti.com> (raw)
In-Reply-To: <20190910132734.9544-1-jjhiblot@ti.com>

Add DT binding for led-backlight.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
---
 .../bindings/leds/backlight/led-backlight.txt | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/backlight/led-backlight.txt

diff --git a/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt b/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt
new file mode 100644
index 000000000000..4c7dfbe7f67a
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt
@@ -0,0 +1,28 @@
+led-backlight bindings
+
+This binding is used to describe a basic backlight device made of LEDs.
+It can also be used to describe a backlight device controlled by the output of
+a LED driver.
+
+Required properties:
+  - compatible: "led-backlight"
+  - leds: a list of LEDs
+
+Optional properties:
+  - brightness-levels: Array of distinct brightness levels. The levels must be
+                       in the range accepted by the underlying LED devices.
+                       This is used to translate a backlight brightness level
+                       into a LED brightness level. If it is not provided, the
+                       identity mapping is used.
+
+  - default-brightness-level: The default brightness level.
+
+Example:
+
+	backlight {
+		compatible = "led-backlight";
+
+		leds = <&led1>, <&led2>;
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <6>;
+	};
-- 
2.17.1


  parent reply	other threads:[~2019-09-10 13:27 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-10 13:27 [PATCH v6 0/4] Add a generic driver for LED-based backlight Jean-Jacques Hiblot
2019-09-10 13:27 ` [PATCH v6 1/4] leds: Add of_led_get() and led_put() Jean-Jacques Hiblot
2019-09-10 18:49   ` Jacek Anaszewski
2019-09-10 13:27 ` [PATCH v6 2/4] leds: Add managed API to get a LED from a device driver Jean-Jacques Hiblot
2019-09-10 13:27 ` Jean-Jacques Hiblot [this message]
2019-09-10 13:27 ` [PATCH v6 4/4] backlight: add led-backlight driver Jean-Jacques Hiblot
2019-09-10 13:32   ` Daniel Thompson

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