Re: [PATCH v2 2/4] dmaengine: xilinx_dma: properly configure the SG mode bit in the driver for cdma

2018-01-08 Thread Vinod Koul
On Wed, Jan 03, 2018 at 12:12:09PM +0530, Kedareswara rao Appana wrote: > If the hardware is configured for Scatter Gather(SG) mode, > and hardware is idle, in the control register SG mode bit > must be set to a 0 then back to 1 by the software, to force > the CDMA SG engine to use a new value

Re: [PATCH v2 2/4] dmaengine: xilinx_dma: properly configure the SG mode bit in the driver for cdma

2018-01-08 Thread Vinod Koul
On Wed, Jan 03, 2018 at 12:12:09PM +0530, Kedareswara rao Appana wrote: > If the hardware is configured for Scatter Gather(SG) mode, > and hardware is idle, in the control register SG mode bit > must be set to a 0 then back to 1 by the software, to force > the CDMA SG engine to use a new value

[PATCH v2 2/4] dmaengine: xilinx_dma: properly configure the SG mode bit in the driver for cdma

2018-01-02 Thread Kedareswara rao Appana
If the hardware is configured for Scatter Gather(SG) mode, and hardware is idle, in the control register SG mode bit must be set to a 0 then back to 1 by the software, to force the CDMA SG engine to use a new value written to the CURDESC_PNTR register, failure to do so could result errors from the

[PATCH v2 2/4] dmaengine: xilinx_dma: properly configure the SG mode bit in the driver for cdma

2018-01-02 Thread Kedareswara rao Appana
If the hardware is configured for Scatter Gather(SG) mode, and hardware is idle, in the control register SG mode bit must be set to a 0 then back to 1 by the software, to force the CDMA SG engine to use a new value written to the CURDESC_PNTR register, failure to do so could result errors from the