[PATCH] arm64: dts: imx8mq: Add eCSPI DMA support

From: Fabio Estevam <festevam@gmail.com>
To: shawnguo@kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
	Fabio Estevam <festevam@gmail.com>,
	linux-imx@nxp.com, kernel@pengutronix.de
Subject: [PATCH] arm64: dts: imx8mq: Add eCSPI DMA support
Date: Fri,  8 Jan 2021 09:47:26 -0300	[thread overview]
Message-ID: <20210108124726.22216-1-festevam@gmail.com> (raw)

eCSPI ports have DMA capability. Describe the eCSPI DMA properties.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
The i.MX8MQ Reference Manual does not show the ECSPI3 RX and TX in the
SDMA events table.

I checked with the design team and it is an error in the RM that will
be corrected.

 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index a841a023e8e0..d6e00033a179 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -826,6 +826,8 @@
 				clocks = <&clk IMX8MQ_CLK_ECSPI1_ROOT>,
 					 <&clk IMX8MQ_CLK_ECSPI1_ROOT>;
 				clock-names = "ipg", "per";
+				dmas = <&sdma1 0 7 1>, <&sdma1 1 7 2>;
+				dma-names = "rx", "tx";
 				status = "disabled";
 			};
 
@@ -838,6 +840,8 @@
 				clocks = <&clk IMX8MQ_CLK_ECSPI2_ROOT>,
 					 <&clk IMX8MQ_CLK_ECSPI2_ROOT>;
 				clock-names = "ipg", "per";
+				dmas = <&sdma1 2 7 1>, <&sdma1 3 7 2>;
+				dma-names = "rx", "tx";
 				status = "disabled";
 			};
 
@@ -850,6 +854,8 @@
 				clocks = <&clk IMX8MQ_CLK_ECSPI3_ROOT>,
 					 <&clk IMX8MQ_CLK_ECSPI3_ROOT>;
 				clock-names = "ipg", "per";
+				dmas = <&sdma1 4 7 1>, <&sdma1 5 7 2>;
+				dma-names = "rx", "tx";
 				status = "disabled";
 			};
 
-- 
2.17.1


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