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From: b38343@freescale.com (Robin Gong)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] ARM: dts: imx6dl: disable dma support for spi on i.mx6dl
Date: Wed, 10 Sep 2014 13:30:12 +0800	[thread overview]
Message-ID: <1410327012-31185-1-git-send-email-b38343@freescale.com> (raw)

There is one weird data in rxfifo after one full rx/tx transfer
done sometimes. It looks a design issue and hard to workaround
totally, so disable dma functhion here. And will re-enable it
once the root cause found.

Signed-off-by: Robin Gong <b38343@freescale.com>
---
 arch/arm/boot/dts/imx6q.dtsi   | 20 ++++++++++++++++++++
 arch/arm/boot/dts/imx6qdl.dtsi |  8 --------
 2 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index e9f3646..8d5d33b 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -291,6 +291,26 @@
 	};
 };
 
+&ecspi1 {
+	dmas = <&sdma 3 7 1>, <&sdma 4 7 2>;
+	dma-names = "rx", "tx";
+};
+
+&ecspi2 {
+	dmas = <&sdma 5 7 1>, <&sdma 6 7 2>;
+	dma-names = "rx", "tx";
+};
+
+&ecspi3 {
+	dmas = <&sdma 7 7 1>, <&sdma 8 7 2>;
+	dma-names = "rx", "tx";
+};
+
+&ecspi4 {
+	dmas = <&sdma 9 7 1>, <&sdma 10 7 2>;
+	dma-names = "rx", "tx";
+};
+
 &mipi_dsi {
 	port at 2 {
 		reg = <2>;
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 70d7207..f696546 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -210,8 +210,6 @@
 					clocks = <&clks IMX6QDL_CLK_ECSPI1>,
 						 <&clks IMX6QDL_CLK_ECSPI1>;
 					clock-names = "ipg", "per";
-					dmas = <&sdma 3 7 1>, <&sdma 4 7 2>;
-					dma-names = "rx", "tx";
 					status = "disabled";
 				};
 
@@ -224,8 +222,6 @@
 					clocks = <&clks IMX6QDL_CLK_ECSPI2>,
 						 <&clks IMX6QDL_CLK_ECSPI2>;
 					clock-names = "ipg", "per";
-					dmas = <&sdma 5 7 1>, <&sdma 6 7 2>;
-					dma-names = "rx", "tx";
 					status = "disabled";
 				};
 
@@ -238,8 +234,6 @@
 					clocks = <&clks IMX6QDL_CLK_ECSPI3>,
 						 <&clks IMX6QDL_CLK_ECSPI3>;
 					clock-names = "ipg", "per";
-					dmas = <&sdma 7 7 1>, <&sdma 8 7 2>;
-					dma-names = "rx", "tx";
 					status = "disabled";
 				};
 
@@ -252,8 +246,6 @@
 					clocks = <&clks IMX6QDL_CLK_ECSPI4>,
 						 <&clks IMX6QDL_CLK_ECSPI4>;
 					clock-names = "ipg", "per";
-					dmas = <&sdma 9 7 1>, <&sdma 10 7 2>;
-					dma-names = "rx", "tx";
 					status = "disabled";
 				};
 
-- 
1.9.1

             reply	other threads:[~2014-09-10  5:30 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-10  5:30 Robin Gong [this message]
2014-09-11  8:02 ` [PATCH v2] ARM: dts: imx6dl: disable dma support for spi on i.mx6dl Shawn Guo
2014-09-15  9:41 ` Lucas Stach
2014-09-16  1:43   ` Shawn Guo
2014-09-16  3:41   ` Robin Gong
2014-09-16  9:50     ` Lucas Stach
2014-09-17  8:41       ` Robin Gong
2014-09-17  8:55         ` Lucas Stach
2014-09-17  9:19           ` Robin Gong
2014-09-17  9:19             ` Lucas Stach
2014-09-17  9:28               ` Robin Gong
2014-09-15 11:50 ` Alexander Holler
2014-09-16  3:52   ` Robin Gong
2014-09-16  9:41     ` Alexander Holler
2014-09-17  8:51       ` Robin Gong
2014-09-17 10:56         ` Alexander Holler

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