Hi Sylwester,
Currently I'm struggling with the clocks on the DaVinci platform as the
clock tree is defined in the platform driver and not in DT.
Is there a way to reference the clocks by names from DT, or does the
DaVinci clock driver need to be rewritten for DT support?
There is one more thing I came across using the simple soundcard driver.
The codec needs to be set to generate the clock via PLL.
Unfortunately the simple soundcard always passes clock ID 0 to
snd_soc_dai_set_sysclk() - I need a different value for the internal PLL.
What is the preferred approach here? On one hand the simple soundcard
driver could be extended with a DT parameter "clock ID".
Or does a dedicated soundcard driver need to be written?
Thanks
Petr
On 14.12.2015 13:28, Sylwester Nawrocki wrote:
Yes, you need the clock provider somewhere. In my case it was the I2S
driver that registered a clock provider. Probably you can add your
output clock provider to your SoC's main clock controller driver, and
perhaps use pinctrl API for the pin function mux setup. You can place
assigned-clock* DT properties in the clock provider node and the PLL's
will be configured by the kernel's clk subsystem. Grep for
of_clk_set_defaults or see last chapter of
Documentation/devicetree/bindings/clock/clock-bindings.txt.
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
