[RESEND 1/2] dt-binding: fsl-lpuart: use exact SoC revision to document binding

[jingchang.lu@freescale.com (Jingchang Lu)]

use exact SoC revision instead of wildcard describing
to make the binding more clearer.

Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
---
 Documentation/devicetree/bindings/serial/fsl-lpuart.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/serial/fsl-lpuart.txt b/Documentation/devicetree/bindings/serial/fsl-lpuart.txt
index a1d1205..c95005e 100644
--- a/Documentation/devicetree/bindings/serial/fsl-lpuart.txt
+++ b/Documentation/devicetree/bindings/serial/fsl-lpuart.txt
@@ -1,7 +1,11 @@
 * Freescale low power universal asynchronous receiver/transmitter (lpuart)
 
 Required properties:
-- compatible : Should be "fsl,<soc>-lpuart"
+- compatible :
+  - "fsl,vf610-lpuart" for lpuart compatible with the one integrated
+    on Vybrid vf610 SoC with 8-bit register organization
+  - "fsl,ls1021a-lpuart" for lpuart compatible with the one integrated
+    on LS1021A SoC with 32-bit big-endian register organization
 - reg : Address and length of the register set for the device
 - interrupts : Should contain uart interrupt
 - clocks : phandle + clock specifier pairs, one for each entry in clock-names
-- 
1.8.0