Re: [PATCH v3] spi: spi-sun6i: implement DMA-based transfer mode

2020-10-26 Thread Mark Brown
On Thu, 22 Oct 2020 10:52:21 +0300, Alexander Kochetkov wrote: > DMA-based transfer will be enabled if data length is larger than FIFO size > (64 bytes for A64). This greatly reduce number of interrupts for > transferring data. > > For smaller data size PIO mode will be used. In PIO mode whole

Re: [PATCH v3] spi: spi-sun6i: implement DMA-based transfer mode

2020-10-22 Thread Maxime Ripard
On Thu, Oct 22, 2020 at 10:52:21AM +0300, Alexander Kochetkov wrote: > From: Alexander Kochetkov > > DMA-based transfer will be enabled if data length is larger than FIFO size > (64 bytes for A64). This greatly reduce number of interrupts for > transferring data. > > For smaller data size PIO

[PATCH v3] spi: spi-sun6i: implement DMA-based transfer mode

2020-10-22 Thread Alexander Kochetkov
From: Alexander Kochetkov DMA-based transfer will be enabled if data length is larger than FIFO size (64 bytes for A64). This greatly reduce number of interrupts for transferring data. For smaller data size PIO mode will be used. In PIO mode whole buffer will be loaded into FIFO. If driver