linux-kernel - [PATCH 5.4 137/147] arm64: dts: imx8mn: Change SDMA1 ahb clock for imx8mn

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Message-Id: <20200518173530.237924524@linuxfoundation.org>
Date:   Mon, 18 May 2020 19:37:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Adam Ford <aford173@...il.com>,
        Shawn Guo <shawnguo@...nel.org>
Subject: [PATCH 5.4 137/147] arm64: dts: imx8mn: Change SDMA1 ahb clock for imx8mn

From: Adam Ford <aford173@...il.com>

commit 15ddc3e17aec0de4c69d595b873e184432b9791d upstream.

Using SDMA1 with UART1 is causing a "Timeout waiting for CH0" error.
This patch changes to ahb clock from SDMA1_ROOT to AHB which fixes the
timeout error.

Fixes: 6c3debcbae47 ("arm64: dts: freescale: Add i.MX8MN dtsi support")

Signed-off-by: Adam Ford <aford173@...il.com>
Signed-off-by: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm64/boot/dts/freescale/imx8mn.dtsi |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -616,7 +616,7 @@
 				reg = <0x30bd0000 0x10000>;
 				interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clk IMX8MN_CLK_SDMA1_ROOT>,
-					 <&clk IMX8MN_CLK_SDMA1_ROOT>;
+					 <&clk IMX8MN_CLK_AHB>;
 				clock-names = "ipg", "ahb";
 				#dma-cells = <3>;
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx7d.bin";