[alsa-devel] Lockups reading from i.MX51 SSI registers

Uwe Kleine-König u.kleine-koenig at pengutronix.de
Sat Aug 18 09:42:16 CEST 2012

On Fri, Aug 17, 2012 at 11:27:38PM +0100, Mark Brown wrote:
> On Fri, Aug 17, 2012 at 04:08:47PM -0300, Fabio Estevam wrote:
> > Also, for the playback to work you need to install the SDMA firmware.
> This is deadlocking during boot, I'm getting nowhere near trying
> playback.
You're on i.MX35, right. I had to add

	clk_register_clkdev(clk[ssi1_gate], NULL, "imx-ssi.0");

to arch/arm/mach-imx/clk-imx35.c to be able to access the codec.
(Obviously this is a hack, and to do it better, you'd need to change

	clk_register_clkdev(clk[ssi1_div_post], "per", "imx-ssi.0");

to use ssi1_gate and fix the ssi-driver to be aware that there are two
clocks to handle.)

Best regards

Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

More information about the Alsa-devel mailing list