linux-kernel - [PATCH 07/16] ARM: dts: at91: sama5d2: Specify the FIFO size for the Flexcom UART

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Date:   Thu, 14 May 2020 05:03:11 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <alexandre.belloni@...tlin.com>, <Ludovic.Desroches@...rochip.com>,
        <Nicolas.Ferre@...rochip.com>
CC:     <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <Codrin.Ciubotariu@...rochip.com>,
        <Tudor.Ambarus@...rochip.com>
Subject: [PATCH 07/16] ARM: dts: at91: sama5d2: Specify the FIFO size for the
 Flexcom UART

From: Tudor Ambarus <tudor.ambarus@...rochip.com>

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@...rochip.com>
---
 arch/arm/boot/dts/sama5d2.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
index acb91908bd74..dde969a140b4 100644
--- 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";
 				};
 			};
-- 
2.23.0