Thread (5 messages) 5 messages, 2 authors, 2021-06-04

Re: [PATCH v7 0/5] clk: ti: add am33xx spread spectrum clock support

From: Tony Lindgren <tony@atomide.com>
Date: 2021-06-04 07:24:14
Also in: linux-clk, linux-omap, lkml

Hi,

* Dario Binacchi [off-list ref] [210602 15:00]:
As reported by the TI spruh73x/spruhl7x RM, MPU and LCD modules support
spread spectrum clocking (SSC) on their output clocks. SSC is used to
spread the spectral peaking of the clock to reduce any electromagnetic
interference (EMI) that may be caused due to the clock’s fundamental
or any of its harmonics.
The series allows you to enable and adjust the spread spectrum clocking
for all am33xx/am43xx PLLs for which it is supported. All these issues
have been fixed.


Previous versions of the series did not supported SSC for am43xx SOCs,
causing clock registration failure for DPLLs. Furthermore, for am33xx
SOCs, clock registration failed for DPLLs for which SSC is not supported.
Looks good to me, probably best to queue this all via the clock tree.

Regards,

Tony
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