From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
To: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>, Bryan Wu <cooloney@gmail.com>,
Richard Purdie <rpurdie@rpsys.net>,
Grant Likely <grant.likely@linaro.org>
Cc: Courtney Cavin <courtney.cavin@sonymobile.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-leds@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: [PATCH v3 1/2] leds: add DT binding for Qualcomm PM8941 WLED block
Date: Tue, 24 Feb 2015 19:49:35 -0800 [thread overview]
Message-ID: <1424836176-9578-1-git-send-email-bjorn.andersson@sonymobile.com> (raw)
From: Courtney Cavin <courtney.cavin@sonymobile.com>
This adds device tree binding documentation for the WLED ('White' LED)
block on Qualcomm's PM8941 PMICs.
Signed-off-by: Courtney Cavin <courtney.cavin@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
---
Changes since v2:
- None
Changes since v1:
- None
.../devicetree/bindings/leds/leds-pm8941-wled.txt | 43 ++++++++++++++++++++++
1 file changed, 43 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt
diff --git a/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt b/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt
new file mode 100644
index 0000000..a85a964
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt
@@ -0,0 +1,43 @@
+Binding for Qualcomm PM8941 WLED driver
+
+Required properties:
+- compatible: should be "qcom,pm8941-wled"
+- reg: slave address
+
+Optional properties:
+- label: The label for this led
+ See Documentation/devicetree/bindings/leds/common.txt
+- linux,default-trigger: Default trigger assigned to the LED
+ See Documentation/devicetree/bindings/leds/common.txt
+- qcom,cs-out: bool; enable current sink output
+- qcom,cabc: bool; enable content adaptive backlight control
+- qcom,ext-gen: bool; use externally generated modulator signal to dim
+- qcom,current-limit: mA; per-string current limit; value from 0 to 25
+ default: 20mA
+- qcom,current-boost-limit: mA; boost current limit; one of:
+ 105, 385, 525, 805, 980, 1260, 1400, 1680
+ default: 805mA
+- qcom,switching-freq: kHz; switching frequency; one of:
+ 600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371,
+ 1600, 1920, 2400, 3200, 4800, 9600,
+ default: 1600kHz
+- qcom,ovp: V; Over-voltage protection limit; one of:
+ 27, 29, 32, 35
+ default: 29V
+- qcom,num-strings: #; number of led strings attached; value from 1 to 3
+ default: 2
+
+Example:
+
+pm8941-wled@d800 {
+ compatible = "qcom,pm8941-wled";
+ reg = <0xd800>;
+ label = "backlight";
+
+ qcom,cs-out;
+ qcom,current-limit = <20>;
+ qcom,current-boost-limit = <805>;
+ qcom,switching-freq = <1600>;
+ qcom,ovp = <29>;
+ qcom,num-strings = <2>;
+};
--
1.9.1
next reply other threads:[~2015-02-25 3:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-25 3:49 Bjorn Andersson [this message]
2015-02-25 3:49 ` [PATCH v3 2/2] leds: add Qualcomm PM8941 WLED driver Bjorn Andersson
2015-03-09 20:52 ` Bryan Wu
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