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From: Dan Murphy <dmurphy@ti.com>
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 <dmurphy@ti.com>, Rob Herring <robh@kernel.org>
Subject: [PATCH v4 3/7] dt-bindings: mfd: LMU: Add ti,brightness-resolution
Date: Mon, 6 May 2019 14:16:10 -0500	[thread overview]
Message-ID: <20190506191614.25051-4-dmurphy@ti.com> (raw)
In-Reply-To: <20190506191614.25051-1-dmurphy@ti.com>

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 <robh@kernel.org>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---

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


  parent reply	other threads:[~2019-05-06 19:16 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-06 19:16 [PATCH v4 0/7] LMU Rework Dan Murphy
2019-05-06 19:16 ` [PATCH v4 1/7] dt-bindings: mfd: LMU: Fix lm3632 dt binding example Dan Murphy
2019-05-08 11:35   ` Lee Jones
2019-05-06 19:16 ` [PATCH v4 2/7] dt-bindings: mfd: LMU: Add the ramp up/down property Dan Murphy
2019-05-08 11:35   ` Lee Jones
2019-05-06 19:16 ` Dan Murphy [this message]
2019-05-08 11:36   ` [PATCH v4 3/7] dt-bindings: mfd: LMU: Add ti,brightness-resolution Lee Jones
2019-05-06 19:16 ` [PATCH v4 4/7] leds: TI LMU: Add common code for TI LMU devices Dan Murphy
2019-05-06 19:16 ` [PATCH v4 5/7] dt-bindings: ti-lmu: Modify dt bindings for the LM3697 Dan Murphy
2019-05-08 11:36   ` Lee Jones
2019-05-06 19:16 ` [PATCH v4 6/7] mfd: ti-lmu: Remove support for LM3697 Dan Murphy
2019-05-06 19:16 ` [PATCH v4 7/7] leds: lm3697: Introduce the lm3697 driver Dan Murphy

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