2020-03-28 02:34:47

by Adam Ford

Subject: [PATCH] arm64: dts: imx8mn: Change SDMA1 ahb clock for imx8mn

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 <[email protected]>

diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index a44b5438e842..882e913436ca 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -661,7 +661,7 @@ sdma1: dma-controller@30bd0000 {
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";
--
2.25.1

2020-04-23 20:02:19

by Shawn Guo

Subject: Re: [PATCH] arm64: dts: imx8mn: Change SDMA1 ahb clock for imx8mn

On Fri, Mar 27, 2020 at 09:33:53PM -0500, Adam Ford wrote:
> 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 <[email protected]>

Applied, thanks.