On Dienstag, 25. November 2008, ngc@xxxxxxxxxx wrote: > Now I'm porting WM8728 driver with i.MX27ADS, based on Freescale's BSP > kernel(2.6.22) and refering to ALSA SoC git repository. > > I'm connecting the WM8728 to the SSI2 controller via SSI-3 signal set. > Then, my ADS board has altered: > i.MX27 WM8728 > --------------------- > SSI3_CLK BCLKIN > SSI3_FS LRCIN > SSI3_TXDAT DIN > TOUT/SSI2_MCLK MCLK > > Of course, I added some codes to configure GPIO pins as appropriate into > board specific sources. > > Then, I'm trying to play sounds via WM8728 and > have not hear any sounds yet. > I checked SSI-3 signal set with an oscilloscope, > no clock signal appears on SSI3_CLK. > I tried the various SSI setting, I2S normal, I2S master, > asychronous/synchronous, normal mode/network mode, ... > But, I can't see clock signal, yet. > > > I want to know an example setting to act i.MX' SSI as I2S clock master. Maybe the SPI-DAM-PIN mapping could help you: SSI1_* pin group is port 4 at the DAM unit SSI2_* pin group is port 5 at the DAM unit SSI3_* pin group is port 6 at the DAM unit SSI4_* pin group is port 3 at the DAM unit I didn't find this info in the datasheet yet. Regards, Juergen -- Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Vertretung Sued/Muenchen, Germany Phone: +49-8766-939 228 | Fax: +49-5121-206917-5555 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
