On Tue, Oct 27, 2015 at 2:42 PM, Caleb Crome caleb@crome.org wrote:
On Tue, Oct 27, 2015 at 9:10 AM, Fabio Estevam festevam@gmail.com wrote:
On Tue, Oct 27, 2015 at 2:02 PM, Caleb Crome caleb@crome.org wrote:
Could you please try it without using the external SDMA firmware?
I do need *some* SDMA firmware, correct? The firmware that I'm using ends up in /lib/firmware/imx/sdma/sdma-imx6q.bin and is md5sum 5d4584134cc4cba62e1be2f382cd6f3a.
SSI can operate with the ROM SDMA firmware.
I would like to know if this issue also happens if you don't pass the external firmware and use the internal ROM SDMA firmware instead.
Ah, good to know. Do I just remove reference in the .dtsi file? Remove the file from the filesystem? I'll do both to be doubly sure :-)
Just remove it from the rootfs. Then you will see a message from the kernel saying that no external SDMA firmware could be found and that the internal one is going to be used.
Also, could you try bumping the SSI and SDMA clock rates at the maximum?
Any idea how I do that? I guess it's in the .dtsi file perhaps? I'll poke around.
You can try to call clk_set_rate() with the maximum allowed frequency inside the ssi driver. I don't recall on top of my head what is this value though.
Regards,
Fabio Estevam