diff options
| author | Robin Gong <yibin.gong@nxp.com> | 2018-01-16 17:52:49 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2021-11-02 16:48:59 +0800 |
| commit | 2dcd7ebc9017cf376035198617a45867772961b7 (patch) | |
| tree | 04f63180fc6847fc4e3b8874b56fcdae277f7a8c /Documentation/devicetree/bindings/dma | |
| parent | cf16881bfaf4f6bf7402a7aeae68deceb57b7249 (diff) | |
dmaengine: imx-sdma: update sdma script for multi fifo on SAI
update sdma script for multi fifo SAI on i.mx8MQ. Besides,Add
new cell for sw_done/sw_done_selector, because PDM need enable
software done feature in sdma script(same multi fifo 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>
Diffstat (limited to 'Documentation/devicetree/bindings/dma')
| -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 ffa61264a214..b1d161fe188a 100644 --- a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt +++ b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt @@ -57,7 +57,12 @@ 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 ------------------------- @@ -65,6 +70,9 @@ 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. |