Messages in this thread Patch in this message | | | From | Martin Kaiser <> | Subject | [PATCH] ARM: dts: i.MX25: define SSI FIFO depth | Date | Tue, 6 Mar 2018 22:58:19 +0100 |
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According to the i.MX25 reference manuals, each SSI has four FIFOs. All of those FIFOs can store up to 15 entries.
The fsl_ssi driver's internal default for the FIFO depth in 8. Set our non-default FIFO depth explicitly in the Device Tree.
Signed-off-by: Martin Kaiser <martin@kaiser.cx> --- arch/arm/boot/dts/imx25.dtsi | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/imx25.dtsi b/arch/arm/boot/dts/imx25.dtsi index 9725705..cf70df2 100644 --- a/arch/arm/boot/dts/imx25.dtsi +++ b/arch/arm/boot/dts/imx25.dtsi @@ -269,6 +269,7 @@ dmas = <&sdma 24 1 0>, <&sdma 25 1 0>; dma-names = "rx", "tx"; + fsl,fifo-depth = <15>; status = "disabled"; }; @@ -329,6 +330,7 @@ dmas = <&sdma 28 1 0>, <&sdma 29 1 0>; dma-names = "rx", "tx"; + fsl,fifo-depth = <15>; status = "disabled"; }; -- 2.1.4
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