Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 66 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/leds/leds-gpio.txt b/Documentation/devicetree/bindings/leds/leds-gpio.txt
new file mode 100644
index 000000000..a48dda268
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-gpio.txt
@@ -0,0 +1,66 @@
+LEDs connected to GPIO lines
+
+Required properties:
+- compatible : should be "gpio-leds".
+
+Each LED is represented as a sub-node of the gpio-leds device.  Each
+node's name represents the name of the corresponding LED.
+
+LED sub-node properties:
+- gpios :  Should specify the LED's GPIO, see "gpios property" in
+  Documentation/devicetree/bindings/gpio/gpio.txt.  Active low LEDs should be
+  indicated using flags in the GPIO specifier.
+- label :  (optional)
+  see Documentation/devicetree/bindings/leds/common.txt
+- linux,default-trigger :  (optional)
+  see Documentation/devicetree/bindings/leds/common.txt
+- default-state:  (optional) The initial state of the LED.
+  see Documentation/devicetree/bindings/leds/common.txt
+- retain-state-suspended: (optional) The suspend state can be retained.Such
+  as charge-led gpio.
+- retain-state-shutdown: (optional) Retain the state of the LED on shutdown.
+  Useful in BMC systems, for example when the BMC is rebooted while the host
+  remains up.
+- panic-indicator : (optional)
+  see Documentation/devicetree/bindings/leds/common.txt
+
+Examples:
+
+#include <dt-bindings/gpio/gpio.h>
+
+leds {
+	compatible = "gpio-leds";
+	hdd {
+		label = "Disk Activity";
+		gpios = <&mcu_pio 0 GPIO_ACTIVE_LOW>;
+		linux,default-trigger = "disk-activity";
+	};
+
+	fault {
+		gpios = <&mcu_pio 1 GPIO_ACTIVE_HIGH>;
+		/* Keep LED on if BIOS detected hardware fault */
+		default-state = "keep";
+	};
+};
+
+run-control {
+	compatible = "gpio-leds";
+	red {
+		gpios = <&mpc8572 6 GPIO_ACTIVE_HIGH>;
+		default-state = "off";
+	};
+	green {
+		gpios = <&mpc8572 7 GPIO_ACTIVE_HIGH>;
+		default-state = "on";
+	};
+};
+
+leds {
+	compatible = "gpio-leds";
+
+	charger-led {
+		gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+		linux,default-trigger = "max8903-charger-charging";
+		retain-state-suspended;
+	};
+};