Hi, On Tue, 6 Mar 2018 22:58:19 +0100 Martin Kaiser wrote: > 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 <mar...@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"; > }; > You are changing the global .dtsi file. Did you test this change with all devices that are affected by it?
Lothar Waßmann
