diff mbox series

[v2,1/2] dt-bindings: serial: imx: Document optional DMA properties

Message ID 20230219142250.10176-1-marex@denx.de
State Superseded
Headers show
Series [v2,1/2] dt-bindings: serial: imx: Document optional DMA properties | expand

Commit Message

Marek Vasut Feb. 19, 2023, 2:22 p.m. UTC 
The UART IP can be connected to DMA engine, document the properties in DT bindings.
Update example to match Linux arch/arm/boot/dts/imx51.dtsi .

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
---
V2: Add AB from Krzysztof
---
 .../devicetree/bindings/serial/fsl-imx-uart.yaml     | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
index 4cbe76e1715b7..c22aab8c55f83 100644
--- a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
@@ -49,6 +49,16 @@  properties:
   reg:
     maxItems: 1
 
+  dmas:
+    items:
+      - description: DMA controller phandle and request line for RX
+      - description: DMA controller phandle and request line for TX
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
   interrupts:
     maxItems: 1
 
@@ -100,6 +110,8 @@  examples:
         compatible = "fsl,imx51-uart", "fsl,imx21-uart";
         reg = <0x73fbc000 0x4000>;
         interrupts = <31>;
+        dmas = <&sdma 18 4 1>, <&sdma 19 4 2>;
+        dma-names = "rx", "tx";
         uart-has-rtscts;
         fsl,dte-mode;
     };