* [PATCH] arm64: dts: imx8mq: Add eCSPI DMA support
@ 2021-01-08 12:47 Fabio Estevam
2021-01-18 0:58 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Fabio Estevam @ 2021-01-08 12:47 UTC (permalink / raw)
To: shawnguo; +Cc: linux-arm-kernel, Fabio Estevam, linux-imx, kernel
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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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm64: dts: imx8mq: Add eCSPI DMA support
2021-01-08 12:47 [PATCH] arm64: dts: imx8mq: Add eCSPI DMA support Fabio Estevam
@ 2021-01-18 0:58 ` Shawn Guo
0 siblings, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2021-01-18 0:58 UTC (permalink / raw)
To: Fabio Estevam; +Cc: linux-arm-kernel, linux-imx, kernel
On Fri, Jan 08, 2021 at 09:47:26AM -0300, Fabio Estevam wrote:
> eCSPI ports have DMA capability. Describe the eCSPI DMA properties.
>
> Signed-off-by: Fabio Estevam <festevam@gmail.com>
Applied, thanks.
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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2021-01-18 0:58 ` Shawn Guo
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