[PATCH 1/2] dt-bindings: serial: 8250_omap: Add compatible for AM654 UART controller

From: Nishanth Menon
Date: Tue Jun 19 2018 - 15:45:18 EST


AM654 uses a UART controller that is only partially compatible with
existing 8250 UART. UART DMA integration is substantially different
and even a match against standard 8250 or omap4 would result in
non-working UART once DMA is enabled by default.

Introduce a specific compatible to help build up the differences in
follow on patches.

Cc: Sekhar Nori <nsekhar@xxxxxx>
Cc: Vignesh R <vigneshr@xxxxxx>
Signed-off-by: Nishanth Menon <nm@xxxxxx>
---

Changes since RFC:
* DT binding has been split out as it's own patch and commit message elaborated

RFC: https://patchwork.kernel.org/patch/10447641/

Documentation/devicetree/bindings/serial/omap_serial.txt | 1 +
1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/serial/omap_serial.txt b/Documentation/devicetree/bindings/serial/omap_serial.txt
index 4b0f05adb228..c35d5ece1156 100644
--- a/Documentation/devicetree/bindings/serial/omap_serial.txt
+++ b/Documentation/devicetree/bindings/serial/omap_serial.txt
@@ -1,6 +1,7 @@
OMAP UART controller

Required properties:
+- compatible : should be "ti,am654-uart" for AM654 controllers
- compatible : should be "ti,omap2-uart" for OMAP2 controllers
- compatible : should be "ti,omap3-uart" for OMAP3 controllers
- compatible : should be "ti,omap4-uart" for OMAP4 controllers
--
2.15.1