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Message-Id: <20190610233739.29477-1-mka@chromium.org>
Date:   Mon, 10 Jun 2019 16:37:38 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thierry Reding <thierry.reding@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-leds@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pwm@...r.kernel.org, linux-fbdev@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Brian Norris <briannorris@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH 1/2] dt-bindings: pwm-backlight: Add 'max-brightness' property

Add an optional 'max-brightness' property, which is used to specify
the number of brightness levels (max-brightness + 1) when the node
has no 'brightness-levels' table.

Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
---
 .../devicetree/bindings/leds/backlight/pwm-backlight.txt       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt b/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
index 64fa2fbd98c9..98f4ba626054 100644
--- a/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
+++ b/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
@@ -27,6 +27,9 @@ Optional properties:
                             resolution pwm duty cycle can be used without
                             having to list out every possible value in the
                             brightness-level array.
+  - max-brightness: Maximum brightness value. Used to specify the number of
+                    brightness levels (max-brightness + 1) when the node
+                    has no 'brightness-levels' table.
 
 [0]: Documentation/devicetree/bindings/pwm/pwm.txt
 [1]: Documentation/devicetree/bindings/gpio/gpio.txt
-- 
2.22.0.rc2.383.gf4fbbf30c2-goog

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