Adding upstream version 4.19.249.upstream/4.19.249upstream

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

1 files changed, 26 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt b/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt
new file mode 100644
index 000000000..c6ae9c9d5
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt
@@ -0,0 +1,26 @@
+Xilinx AXI/PLB soft-core watchdog Device Tree Bindings
+---------------------------------------------------------
+
+Required properties:
+- compatible		: Should be "xlnx,xps-timebase-wdt-1.00.a" or
+			  "xlnx,xps-timebase-wdt-1.01.a".
+- reg			: Physical base address and size
+
+Optional properties:
+- clocks		: Input clock specifier. Refer to common clock
+			  bindings.
+- clock-frequency	: Frequency of clock in Hz
+- xlnx,wdt-enable-once	: 0 - Watchdog can be restarted
+			  1 - Watchdog can be enabled just once
+- xlnx,wdt-interval	: Watchdog timeout interval in 2^<val> clock cycles,
+			  <val> is integer from 8 to 31.
+
+Example:
+axi-timebase-wdt@40100000 {
+	clock-frequency = <50000000>;
+	compatible = "xlnx,xps-timebase-wdt-1.00.a";
+	clocks = <&clkc 15>;
+	reg = <0x40100000 0x10000>;
+	xlnx,wdt-enable-once = <0x0>;
+	xlnx,wdt-interval = <0x1b>;
+} ;