backlight: qcom-wled: Add new properties for PMI8998

Update the bindings with the new properties used for
PMI8998.

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
index 14f28f2e202329844e5be7d40d85d811d083c6ae..c06863badfbda0eaeb5fd06da77f891bda3b6b6a 100644 (file)
--- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
+++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
@@ -20,7 +20,7 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
 - default-brightness
        Usage:        optional
        Value type:   <u32>
-       Definition:   brightness value on boot, value from: 0-4095
+       Definition:   brightness value on boot, value from: 0-4095.
                      Default: 2048
 
 - label
@@ -48,20 +48,24 @@ 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 25 mA.
 
 - qcom,current-boost-limit
        Usage:        optional
        Value type:   <u32>
        Definition:   mA; boost current limit.
                      For pm8941: one of: 105, 385, 525, 805, 980, 1260, 1400,
-                     1680. Default: 805 mA
+                     1680. Default: 805 mA.
                      For pmi8998: one of: 105, 280, 450, 620, 970, 1150, 1300,
-                     1500. Default: 970 mA
+                     1500. Default: 970 mA.
 
 - qcom,switching-freq
        Usage:        optional
@@ -76,15 +80,62 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
        Usage:        optional
        Value type:   <u32>
        Definition:   V; Over-voltage protection limit; one of:
-                     27, 29, 32, 35. default: 29V
+                     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.
+
+- 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.
+
+- 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 +150,5 @@ pm8941-wled@d800 {
        qcom,switching-freq = <1600>;
        qcom,ovp = <29>;
        qcom,num-strings = <2>;
+       qcom,enabled-strings = <0 1>;
 };