[PATCH v2 1/3] dt-bindings: aspeed-lpc: Add UART routing compatible string

Chia-Wei Wang
2021-09-02T02:18:14Z

Add the compatible string and the device tree description for the
Aspeed AST25xx/AST26xx UART routing control.

Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
---
.../devicetree/bindings/mfd/aspeed-lpc.txt | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt b/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
index 936aa108eab4..45d44f812e5e 100644
--- a/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
+++ b/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
@@ -155,3 +155,25 @@ lpc_reset: reset-controller at 98 {
reg = <0x98 0x4>;
#reset-cells = <1>;
};
+
+UART routing control
+--------------------
+
+The UART routing control manages the RX muxes among the UART controllers
+and the I/O pins. This is typicall used for the Serial-Over-Lan (SOL)
+service.
+
+Required properties:
+
+ - compatible: One of:
+ "aspeed,ast2500-uart-routing";
+ "aspeed,ast2600-uart-routing";
+
+ - reg: offset and length of the IP in the LPC memory region
+
+Example:
+
+uart_routing: uart-routing at 98 {
+ compatible = "aspeed,ast2600-uart-routing";
+ reg = <0x98 0x8>;
+};
--
2.17.1