On 11/08/2013 06:19 PM, Mark Brown wrote:
On Fri, Nov 08, 2013 at 09:52:16AM +0800, Qiao Zhou wrote:
On 11/06/2013 07:24 PM, Mark Brown wrote:
What is TISSP mode in an audio context?
It's normal SSP mode, and it has a pulse of one bit clock width,
OK, what is SSP mode?
SSP mode is just one frame format defined in sscr0 register, and there are 3 other mode, such as SPI mode, National Semiconductor Microwire(NSM) mode, Programmable Serial Protocol(PSP) mode. The SPI/NSM are not used for audio usage, and currently only PSP mode is used pxa-ssp driver. We have the requirement now to support this SSP mode. The benefit is that we don't need to configure detailed timing in transmit/receiving since HW handles it automatically. The SSP mode is something like the PCM format for mono stream for voice related scenario. In current audio format definition and pxa-ssp driver implementation, I don't find suitable way to handle it. so I add such SSP-format to differentiate it from PSP mode. Do I make a confusion of SSP mode and audio frame format? please help comment. thanks.