On 25/08/14 20:40, Stephen Warren wrote:
On 07/11/2014 08:18 AM, Mikko Perttunen wrote:
Hi everyone,
this series adds support for the EMC (external memory controller) clock
in the Tegra124 system-on-chip. The series has been tested on Jetson TK1.
The first two patches remove the old "emc_mux" and "emc" clocks from the
clock tree and the device tree bindings. This is, of course, not
backwards
compatible, but as these clocks have never been useful for anything
(apart from maybe reading the boot rate of the EMC clock). If this is
still
not acceptable, the second patch can be dropped.
...
Mikko, this series had some comments, especially on the DT binding
(patch 5/8) and how the MC/EMC drivers interact. Is there an updated
version of the series? Or, is the series replaced by Tomeu Vizoso's work?
Yes, I have a v2 with these comments addressed. One concern, though, is
the part writing to CLK_SOURCE_EMC. If some other driver also wants to
read this register (MC, likely), we might need to have an API for it in
the CAR driver. On the other hand, maybe not, since it's only one
register. Thierry?
Another point is that v2 adds a new API to the MC driver, which also
doesn't exist yet. The EMC driver can technically work without the MC
driver (but with a header for MC added), but I'm not sure the result
would be very useful.
I believe the plan is that Tomeu's EMC code will be integrated into this
EMC driver once both are ready.
Mikko
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