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Subject[PATCH] ARM: dts: i.MX25: define SSI FIFO depth
Date
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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