nios2: convert altera_uart to driver model

[u-boot] / doc / device-tree-bindings / serial / altera_uart.txt

diff --git a/doc/device-tree-bindings/serial/altera_uart.txt b/doc/device-tree-bindings/serial/altera_uart.txt
new file mode 100644 (file)
index 0000000..ebac3f5
--- /dev/null
+++ b/doc/device-tree-bindings/serial/altera_uart.txt
@@ -0,0 +1,7 @@
+Altera UART
+
+Required properties:
+- compatible : should be "altr,uart-1.0"
+
+Optional properties:
+- clock-frequency : frequency of the clock input to the UART