summaryrefslogtreecommitdiff
path: root/doc/device-tree-bindings/serial/ns16550.txt
diff options
context:
space:
mode:
Diffstat (limited to 'doc/device-tree-bindings/serial/ns16550.txt')
-rw-r--r--doc/device-tree-bindings/serial/ns16550.txt10
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/serial/ns16550.txt b/doc/device-tree-bindings/serial/ns16550.txt
new file mode 100644
index 0000000000..ef0b9aee6d
--- /dev/null
+++ b/doc/device-tree-bindings/serial/ns16550.txt
@@ -0,0 +1,10 @@
+NS16550 UART
+
+This UART driver supports many chip variants and is used in mamy SoCs.
+
+Required properties:
+- compatible: "ns16550" or "nvidia,tegra20-uart"
+- reg: start address and size of registers
+- reg-shift: shift value indicating register size: 0=byte, 1=16bit,2=32bit etc.
+- clock-frequency: input clock frequency for the UART (used to calculate the
+ baud rate divisor)