On Tue, 2019-11-19 at 18:19 +0000, Mark Brown wrote: > On Mon, Nov 18, 2019 at 12:57:17PM +0800, Luhua Xu wrote: > > Add configure SPI CS setup/hold/idle delays in terms > > of clk count support, and use one period of current > > spi speed as default if setup/hold/idle not indicated. > > We have added a generic way to specify delays like this via the > set_cs_timing() operation and related fields in the spi_device struct > which operate in terms of spi_delay - Alexandru Ardelean added them > recently. This supports both times and clock cycles as units so should > fit with what your hardware can do, the interface is new though so there > may be soem rough edges to worry about. I find the patch today. It's really a better idear.