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authorTimur Tabi <timur@freescale.com>2009-03-04 14:55:30 -0600
committerKumar Gala <galak@kernel.crashing.org>2009-03-09 10:52:03 -0500
commit0bcd783c1f0396b68410fdb41fbe196fbc1947af (patch)
tree6e5ed09ccf8ebe014104f87382b3985affb13ee1
parentc3071951d0acd33b5c3f820fb5eaa3a9c2a8f212 (diff)
powerpc: add fsl,fifo-depth property to Freescale SSI device nodes
The Freescale Serial Synchronous Interface (SSI) is an audio device present on some Freescale SOCs. Various implementations of the SSI have a different transmit and receive FIFO depth, but are otherwise identical. To support these variations, add a new property fsl,fifo-depth to the SSI node that specifies the depth of the FIFOs. Also update the MPC8610 HPCD device tree with this property. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-rw-r--r--Documentation/powerpc/dts-bindings/fsl/ssi.txt2
-rw-r--r--arch/powerpc/boot/dts/mpc8610_hpcd.dts2
2 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/powerpc/dts-bindings/fsl/ssi.txt b/Documentation/powerpc/dts-bindings/fsl/ssi.txt
index a2d963998a65..731332288931 100644
--- a/Documentation/powerpc/dts-bindings/fsl/ssi.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/ssi.txt
@@ -30,6 +30,8 @@ Required properties:
- fsl,capture-dma: phandle to a node for the DMA channel to use for
capture (recording) of audio. This is typically dictated
by SOC design. See the notes below.
+- fsl,fifo-depth: the number of elements in the transmit and receive FIFOs.
+ This number is the maximum allowed value for SFCSR[TFWM0].
Optional properties:
- codec-handle : phandle to a 'codec' node that defines an audio
diff --git a/arch/powerpc/boot/dts/mpc8610_hpcd.dts b/arch/powerpc/boot/dts/mpc8610_hpcd.dts
index f724d72c7b92..1bd3ebe11437 100644
--- a/arch/powerpc/boot/dts/mpc8610_hpcd.dts
+++ b/arch/powerpc/boot/dts/mpc8610_hpcd.dts
@@ -217,6 +217,7 @@
codec-handle = <&cs4270>;
fsl,playback-dma = <&dma00>;
fsl,capture-dma = <&dma01>;
+ fsl,fifo-depth = <8>;
};
ssi@16100 {
@@ -225,6 +226,7 @@
reg = <0x16100 0x100>;
interrupt-parent = <&mpic>;
interrupts = <63 2>;
+ fsl,fifo-depth = <8>;
};
dma@21300 {