| Message ID | 1236200130-12012-1-git-send-email-timur@freescale.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Commit | 0bcd783c1f0396b68410fdb41fbe196fbc1947af |
| Delegated to: | Kumar Gala |
| Headers | show |
On Mar 4, 2009, at 2:55 PM, Timur Tabi wrote: > 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> > --- > > Updates to the SSI audio driver will come later. Currently, this > driver > supports only one Freescale SOC, and so it's hard-coded to use the > value 8. > If/when this driver is updated to support other SOCs (e.g. the i.MX > parts > that have a FIFO depth of 15), the driver will check for this > property. I > just want to get this DTS change in now. > > Documentation/powerpc/dts-bindings/fsl/ssi.txt | 2 ++ > arch/powerpc/boot/dts/mpc8610_hpcd.dts | 2 ++ > 2 files changed, 4 insertions(+), 0 deletions(-) applied to next - k
diff --git a/Documentation/powerpc/dts-bindings/fsl/ssi.txt b/Documentation/powerpc/dts-bindings/fsl/ssi.txt index a2d9639..7313322 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 f724d72..1bd3ebe 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 {
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> --- Updates to the SSI audio driver will come later. Currently, this driver supports only one Freescale SOC, and so it's hard-coded to use the value 8. If/when this driver is updated to support other SOCs (e.g. the i.MX parts that have a FIFO depth of 15), the driver will check for this property. I just want to get this DTS change in now. Documentation/powerpc/dts-bindings/fsl/ssi.txt | 2 ++ arch/powerpc/boot/dts/mpc8610_hpcd.dts | 2 ++ 2 files changed, 4 insertions(+), 0 deletions(-)