From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Murphy Subject: [PATCH v4 3/7] dt-bindings: mfd: LMU: Add ti,brightness-resolution Date: Mon, 6 May 2019 14:16:10 -0500 Message-ID: <20190506191614.25051-4-dmurphy@ti.com> References: <20190506191614.25051-1-dmurphy@ti.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190506191614.25051-1-dmurphy@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: jacek.anaszewski@gmail.com, pavel@ucw.cz Cc: lee.jones@linaro.org, rdunlap@infradead.org, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, Dan Murphy , Rob Herring List-Id: linux-leds@vger.kernel.org Add ti,brightness-resolution to the TI LMU binding to define whether the device uses 8-bit brightness or 11-bit brightness. Reviewed-by: Rob Herring Signed-off-by: Dan Murphy --- v4 - No changes - https://lore.kernel.org/patchwork/patch/1068617/ v3 - No changes added Reviewed-by Rob - https://lore.kernel.org/patchwork/patch/1058763/ v2 - New patch. Add brightness resolution to ti-lmu.txt. See patch comments for context. - https://lore.kernel.org/patchwork/patch/1054501/ Documentation/devicetree/bindings/mfd/ti-lmu.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/ti-lmu.txt b/Documentation/devicetree/bindings/mfd/ti-lmu.txt index 160eb0a5e21a..e3efefb194c5 100644 --- a/Documentation/devicetree/bindings/mfd/ti-lmu.txt +++ b/Documentation/devicetree/bindings/mfd/ti-lmu.txt @@ -31,6 +31,16 @@ Optional properties: - ramp-down-us: Current ramping from one brightness level to the a lower brightness level. Range from 2048 us - 117.44 s + - ti,brightness-resolution - This determines whether to use 8 bit brightness + mode or 11 bit brightness mode. If this value is + not set the device is defaulted to the preferred + 8bit brightness mode per 7.3.4.1 of the data + sheet. This setting can either be in the parent + node or as part of the LED child nodes. This + is determined by the part itself if the strings + have a common brightness register or individual + brightness registers. + The values are 255 (8bit) or 2047 (11bit). Required node: - backlight: All LMU devices have backlight child nodes. @@ -217,6 +227,7 @@ lm3697@36 { compatible = "ti,lm3697-backlight"; lcd { + ti,brightness-resolution = <255>; led-sources = <0 1 2>; ramp-up-us = <200000>; ramp-down-us = <200000>; -- 2.21.0.5.gaeb582a983