ARM: dts: at91: sama5d2: Specify the FIFO size for the Flexcom UART

The UART submodule in Flexcom has 32-byte Transmit and Receive FIFOs.
Tested uart7 on sama5d2-icp, which has both DMA and FIFO enabled.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200514050301.147442-8-tudor.ambarus@microchip.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
index acb9190..dde969a 100644 (file)
--- a/arch/arm/boot/dts/sama5d2.dtsi
+++ b/arch/arm/boot/dts/sama5d2.dtsi
@@ -701,6 +701,7 @@
                                                 AT91_XDMAC_DT_PER_IF(1) |
                                                 AT91_XDMAC_DT_PERID(14))>;
                                        dma-names = "tx", "rx";
+                                       atmel,fifo-size = <32>;
                                        status = "disabled";
                                };
 
@@ -879,6 +880,7 @@
                                                 AT91_XDMAC_DT_PER_IF(1) |
                                                 AT91_XDMAC_DT_PERID(16))>;
                                        dma-names = "tx", "rx";
+                                       atmel,fifo-size = <32>;
                                        status = "disabled";
                                };
                        };