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From:   Kiran Gunda <kgunda@codeaurora.org>
To:     bjorn.andersson@linaro.org, jingoohan1@gmail.com,
        lee.jones@linaro.org, b.zolnierkie@samsung.com,
        dri-devel@lists.freedesktop.org,
        Daniel Thompson <daniel.thompson@linaro.org>,
        Jacek Anaszewski <jacek.anaszewski@gmail.com>,
        Pavel Machek <pavel@ucw.cz>, Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc:     linux-arm-msm@vger.kernel.org, Kiran Gunda <kgunda@codeaurora.org>
Subject: [PATCH V3 3/7] backlight: qcom-wled: Add new properties for PMI8998
Date:   Tue, 19 Jun 2018 16:43:38 +0530
Message-Id: <1529406822-15379-4-git-send-email-kgunda@codeaurora.org>
In-Reply-To: <1529406822-15379-1-git-send-email-kgunda@codeaurora.org>
References: <1529406822-15379-1-git-send-email-kgunda@codeaurora.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Update the bindings with the new properties used for
PMI8998.

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
---
 .../bindings/leds/backlight/qcom-wled.txt          | 84 ++++++++++++++++++++--
 1 file changed, 77 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
index 14f28f2..503ce87 100644
--- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
+++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
@@ -48,11 +48,15 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
 - qcom,current-limit
 	Usage:        optional
 	Value type:   <u32>
-	Definition:   mA; per-string current limit
-		      value: For pm8941: from 0 to 25 with 5 mA step
-			     Default 20 mA.
-			     For pmi8998: from 0 to 30 with 5 mA step
-			     Default 25 mA.
+	Definition:   mA; per-string current limit; value from 0 to 25 with
+		      1 mA step. Default 20 mA.
+		      This property is supported only for pm8941.
+
+- qcom,current-limit-microamp
+	Usage:        optional
+	Value type:   <u32>
+	Definition:   uA; per-string current limit; value from 0 to 30000 with
+		      2500 uA step. Default 25000 uA.
 
 - qcom,current-boost-limit
 	Usage:        optional
@@ -79,12 +83,61 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
 		      27, 29, 32, 35. default: 29V
 		      This property is supported only for PM8941.
 
+- qcom,ovp-millivolt
+	Usage:        optional
+	Value type:   <u32>
+	Definition:   mV; Over-voltage protection limit;
+		      For pmi8998: one of 18100, 19600, 29600, 31100
+		      Default: 29600 mV
+		      If this property is not specified for PM8941, it
+		      falls back to "qcom,ovp" property.
+
 - qcom,num-strings
 	Usage:        optional
 	Value type:   <u32>
 	Definition:   #; number of led strings attached;
-		      value from 1 to 3. default: 2
-		      This property is supported only for PM8941.
+		      value: For PM8941 from 1 to 3. default: 2
+			     For PMI8998 from 1 to 4. default: 4
+
+- interrupts
+	Usage:        optional
+	Value type:   <prop encoded array>
+	Definition:   Interrupts associated with WLED. This should be
+		      "short" and "ovp" interrupts. Interrupts can be
+		      specified as per the encoding listed under
+		      Documentation/devicetree/bindings/spmi/
+		      qcom,spmi-pmic-arb.txt.
+
+- interrupt-names
+	Usage:        optional
+	Value type:   <string>
+	Definition:   Interrupt names associated with the interrupts.
+		      Must be "short" and "ovp". The short circuit detection
+		      is not supported for PM8941.
+
+- qcom,enabled-strings
+	Usage:        optional
+	Value tyoe:   <u32 array>
+	Definition:   Array of the WLED strings numbered from 0 to 3. Each
+		      string of leds are operated individually. Specify the
+		      list of strings used by the device. Any combination of
+		      led strings can be used.
+		      for pm8941: Default values are [00 01].
+		      for pmi8998: Default values are [00 01 02 03].
+
+- qcom,external-pfet
+	Usage:        optional
+	Value type:   <bool>
+	Definition:   Specify if external PFET control for short circuit
+		      protection is used. This property is supported only
+		      for PMI8998.
+
+- qcom,auto-string-detection
+	Usage:        optional
+	Value type:   <bool>
+	Definition:   Enables auto-detection of the WLED string configuration.
+		      This feature is not supported for PM8941.
+
 
 Example:
 
@@ -99,4 +152,21 @@ pm8941-wled@d800 {
 	qcom,switching-freq = <1600>;
 	qcom,ovp = <29>;
 	qcom,num-strings = <2>;
+	qcom,enabled-strings = <0x00 0x01>;
+};
+
+pmi8998-wled@d800 {
+	compatible = "qcom,pmi8998-wled";
+	reg = <0xd800 0xd900>;
+	label = "backlight";
+
+	interrupts = <3 0xd8 2 IRQ_TYPE_EDGE_RISING>,
+		     <3 0xd8 1 IRQ_TYPE_EDGE_RISING>;
+	interrupt-names = "short", "ovp";
+	qcom,current-limit-microamp = <25000>;
+	qcom,current-boost-limit = <805>;
+	qcom,switching-freq = <1600>;
+	qcom,ovp-millivolt = <29600>;
+	qcom,num-strings = <4>;
+	qcom,enabled-strings = <0x00 0x01 0x02 0x03>;
 };
-- 
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