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ARM: dts: i.MX25: define SSI FIFO depth

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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>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Martin Kaiser 2018-03-06 22:58:19 +01:00 committed by Shawn Guo
parent 5fba4ce6ad
commit f4be9b77fa
1 changed files with 2 additions and 0 deletions
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2
arch/arm/boot/dts/imx25.dtsi
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@ -269,6 +269,7 @@ ssi2: ssi@50014000 {
dmas = <&sdma 24 1 0>,
<&sdma 25 1 0>;
dma-names = "rx", "tx";
fsl,fifo-depth = <15>;
status = "disabled";
};
@ -329,6 +330,7 @@ ssi1: ssi@50034000 {
dmas = <&sdma 28 1 0>,
<&sdma 29 1 0>;
dma-names = "rx", "tx";
fsl,fifo-depth = <15>;
status = "disabled";
};