[PATCH v4 4/4] arm64: dts: qcom: Add user LEDs on db820c

[Bjorn Andersson <bjorn.andersson@linaro.org>]

The db820c has 4 "user LEDs", all connected to the PMI8994. The first
three are connected to the three current sinks provided by the TRILED
and the fourth is connected to MPP2.

By utilizing the DTEST bus the MPP is fed the control signal from the
fourth LPG block, providing a consistent interface to the user.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Changes since v3:
- Updated labels

 arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi | 49 ++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
index defcbd15edf9..7e51677d256e 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
@@ -8,6 +8,7 @@
 #include "pmi8994.dtsi"
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 #include <dt-bindings/sound/qcom,q6afe.h>
 #include <dt-bindings/sound/qcom,q6asm.h>
@@ -682,6 +683,54 @@ pinconf {
 	};
 };
 
+&pmi8994_mpps {
+	pmi8994_mpp2_userled4: mpp2-userled4 {
+		pins = "mpp2";
+		function = "sink";
+
+		output-low;
+		qcom,dtest = <4>;
+	};
+};
+
+&pmi8994_lpg {
+	qcom,power-source = <1>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pmi8994_mpp2_userled4>;
+
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	led@1 {
+		reg = <1>;
+		label = "green:user1";
+
+		linux,default-trigger = "heartbeat";
+		default-state = "on";
+	};
+
+	led@2 {
+		reg = <2>;
+		label = "green:user0";
+		default-state = "on";
+	};
+
+	led@3 {
+		reg = <3>;
+		label = "green:user2";
+	};
+
+	led@4 {
+		reg = <4>;
+		label = "green:user3";
+
+		qcom,dtest = <4 1>;
+	};
+};
+
 &pmi8994_spmi_regulators {
 	vdd_gfx: s2@1700 {
 		reg = <0x1700 0x100>;
-- 
2.28.0