Stephen Warren [off-list ref] writes:

On 05/18/2015 01:43 PM, Eric Anholt wrote:

quoted

+	init.flags = CLK_IS_ROOT;

Is it possible to add clock parent information to the driver, so the
clocks are all hooked together into the correct tree, rather than all
looking like root clocks?

One of the many reasons I didn't do anything FW-wise for the kernel was
the hope that such information would be forthcoming, and hence we could
have complete kernel drivers.

As far as I can tell, none of these clocks are the parent of any other.

There's a layer of PLLs, then clockman almost always just dividing off
of those.  In response to a clockman request (which is what this
property tag quickly maps to), only PLLH ever gets changed as a result
of RPI_CLOCK_PIXEL.  PLLH feeds the HDMI and VEC (SDTV).  We don't have
an SDTV clock for us to control through these interfaces, so there are
no conflicts that I can see.  Only two clockman clocks I see divide off
of on other clockman clocks, and we don't have access to those.