arm64: dts: qcom: db820c: Add user LEDs

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>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Dylan Van Assche <me@dylanvanassche.be>
Link: https://lore.kernel.org/r/20220505022706.1692554-5-bjorn.andersson@linaro.org

diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dts b/arch/arm64/boot/dts/qcom/apq8096-db820c.dts
index eb620704edd0a0b9bfc6a764f1f8c27dc759b6e6..c1cb1ba5173cc4d62a1d382d71d1a9102bc0b9e8 100644 (file)
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dts
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dts
@@ -10,6 +10,7 @@
 #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 +683,61 @@
        };
 };
 
+&pmi8994_lpg {
+       qcom,power-source = <1>;
+
+       pinctrl-names = "default";
+       pinctrl-0 = <&pmi8994_mpp2_userled4>;
+
+       qcom,dtest = <0 0>,
+                    <0 0>,
+                    <0 0>,
+                    <4 1>;
+
+       status = "okay";
+
+       led@1 {
+               reg = <1>;
+               color = <LED_COLOR_ID_GREEN>;
+               function = LED_FUNCTION_HEARTBEAT;
+               function-enumerator = <1>;
+
+               linux,default-trigger = "heartbeat";
+               default-state = "on";
+       };
+
+       led@2 {
+               reg = <2>;
+               color = <LED_COLOR_ID_GREEN>;
+               function = LED_FUNCTION_HEARTBEAT;
+               function-enumerator = <0>;
+       };
+
+       led@3 {
+               reg = <3>;
+               color = <LED_COLOR_ID_GREEN>;
+               function = LED_FUNCTION_HEARTBEAT;
+               function-enumerator = <2>;
+       };
+
+       led@4 {
+               reg = <4>;
+               color = <LED_COLOR_ID_GREEN>;
+               function = LED_FUNCTION_HEARTBEAT;
+               function-enumerator = <3>;
+       };
+};
+
+&pmi8994_mpps {
+       pmi8994_mpp2_userled4: mpp2-userled4-state {
+               pins = "mpp2";
+               function = "sink";
+
+               output-low;
+               qcom,dtest = <4>;
+       };
+};
+
 &pmi8994_spmi_regulators {
        vdd_s2-supply = <&vph_pwr>;