diff options
| author | Robin Gong <yibin.gong@nxp.com> | 2018-05-31 02:38:03 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:31:59 +0800 |
| commit | 968fd2509437b87fac261407f48e9164f6d168e2 (patch) | |
| tree | 5df011a3d08724429e5d0974513dc2a29a3b7ef9 /Documentation | |
| parent | 459cdf83e19e13a180267e4aed8d5fce25fd4501 (diff) | |
MLK-18449: dmaengine: imx-sdma：add sw_done support
Add new cell for sw_done/sw_done_selector, because PDM need enable
software done feature in sdma script.
The new fourth cell defined as below:
Bit31: sw_done
Bit15~bit0: selector
For example: 0x80000000 means sw_done enabled for done0 sector which
is for PDM on i.mx8mm.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt index 81b8cad86d17..80174b587df3 100644 --- a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt +++ b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt @@ -53,7 +53,12 @@ The full ID of peripheral types can be found below. 24 SAI 25 HDMI Audio -The third cell specifies the transfer priority as below. +The third cell specifies the transfer priority and software done +as below. + + Bit31: sw_done + Bit15~Bit8: selector + Bit7~Bit0: priority level ID transfer priority ------------------------- @@ -61,6 +66,9 @@ The third cell specifies the transfer priority as below. 1 Medium 2 Low +For example: 0x80000000 means sw_done enabled for done0 sector and + High priority for PDM on i.mx8mm. + Optional properties: - gpr : The phandle to the General Purpose Register (GPR) node. |